Image Converter
Need a different image format? Convert between JPG, PNG and WebP on your device.
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TOOLS FOR EVERYDAY TASKS
Free online tools.
Everyday tasks, sorted.
Resize an image, tidy up your text or work out a percentage.
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200 tools
Word Counter
Working to a word limit? Check words, characters and paragraphs in one place.
Text toolsOpen tool
Password Generator
Create a random password with the length and symbols you choose.
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Percentage Calculator
Work out a percentage, find a share or check how much a number has changed.
CalculatorsOpen tool
Image Compressor
Make a JPEG copy and check whether it saves space before you download.
Image toolsOpen tool
JSON Formatter
Make JSON easier to read, or compact it for copying into another application.
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Image Resizer
Set a new image width. The height adjusts to keep the picture in proportion.
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Profit Margin Calculator
See how much is left from a sale, with margin and markup shown separately.
CalculatorsOpen tool
Date Difference Calculator
Check how many calendar days separate two dates.
Time & randomOpen tool
Calculator
Add, subtract, multiply and divide in seconds.
CalculatorsOpen tool
Mortgage Calculator
Estimate monthly payments and total interest.
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Compound Interest Calculator
Explore savings growth with monthly contributions.
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VAT Calculator
Add or remove VAT at the rate you choose.
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Discount Calculator
Check the reduced price and the amount you save on a percentage discount.
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Tip & Bill Splitter
Work out the tip and each person’s share of a bill.
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Break-Even Calculator
Find how many units you need to sell to cover the costs you enter.
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Unit Converter
Switch between units of length, weight, temperature and volume.
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Case Converter
Switch between uppercase, lowercase and title case.
Text toolsOpen tool
Remove Accents
Turn accented Latin characters into plain text.
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Whitespace Remover
Tidy up the extra spaces and blank lines left behind when you copy text.
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Sort Lines
Sort a list alphabetically or in natural number order.
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Remove Duplicate Lines
Remove repeated lines from a list while keeping one copy of each item.
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Find & Replace
Replace every exact occurrence of a word or phrase.
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Lorem Ipsum Generator
Create placeholder paragraphs for design work.
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URL Slug Generator
Turn a page title into a lowercase, hyphenated URL segment.
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Reading Time Calculator
Get a rough reading-time estimate for an article, script or draft.
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Base64 Encoder & Decoder
Convert text to Base64 or turn a Base64 string back into readable text.
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URL Encoder & Decoder
Encode or decode a URL parameter value.
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HTML Entity Converter
Encode special HTML characters as plain text.
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UUID Generator
Create random version 4 UUIDs in your browser.
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SHA-256 Hash Generator
Create a reproducible fingerprint of your text.
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HEX to RGB Converter
Convert a HEX color to RGB and HSL with a preview.
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Color Contrast Checker
Check how clearly a text color stands out against its background.
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CSV to JSON Converter
Turn spreadsheet-style CSV data into JSON records with named fields.
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Age Calculator
Find completed years and days since a birth date.
Time & randomOpen tool
Countdown Timer
Count down live to a date and time you choose.
Time & randomOpen tool
Stopwatch
Measure elapsed time, pause and record laps.
Time & randomOpen tool
Pomodoro Timer
Set a timer for a focused work session or a short break.
Time & randomOpen tool
World Clock
Check the time in another city before you schedule a call.
Time & randomOpen tool
Random Number Generator
Pick integers within an inclusive range.
Time & randomOpen tool
Dice Roller
Roll one or more six-sided dice.
Time & randomOpen tool
Coin Flip
Make a random choice between heads and tails.
Time & randomOpen tool
Random Name Picker
Pick one entry from your own list.
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Image Rotator
Turn a sideways or upside-down image the right way round.
Image toolsOpen tool
Image Cropper
Trim an image to a square, landscape or portrait shape with a centered crop.
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BMI Calculator
Calculate an adult body mass index estimate.
Everyday lifeOpen tool
Calorie Needs Estimator
Estimate resting metabolism and daily energy use.
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Due Date Calculator
Estimate a due date from the last menstrual period.
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Signature Maker
Draw or type a signature, then save it as a PNG image.
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To-Do List
Keep a simple checklist in this browser.
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Fraction Calculator
Add, subtract, multiply or divide two fractions.
CalculatorsOpen tool
Ratio Simplifier
Reduce a whole-number ratio to its simplest form.
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Proportion Calculator
Solve the missing value in a/b = c/x.
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Scientific Calculator
Evaluate powers, roots, logarithms and trigonometry.
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Quadratic Equation Solver
Find real or complex roots of ax² + bx + c = 0.
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Two-Equation Solver
Solve two linear equations in x and y.
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GCD & LCM Calculator
Find the greatest common divisor and least common multiple.
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Prime Number Checker
Check an integer and show a factor if it is composite.
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Factorial Calculator
Calculate exact factorials using integer arithmetic.
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Combination Calculator
Count selections where order does not matter.
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Permutation Calculator
Count ordered selections without replacement.
CalculatorsOpen tool
Fibonacci Generator
Generate an exact sequence starting with 0 and 1.
CalculatorsOpen tool
Arithmetic Sequence Calculator
Find a term and sum for a constant-difference sequence.
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Geometric Sequence Calculator
Find a term and sum for a constant-ratio sequence.
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Mean, Median & Range
Summarize a numerical dataset in a few clicks.
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Weighted Average Calculator
Calculate a mean using a weight for each value.
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Standard Deviation Calculator
Measure spread using sample or population variance.
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Percentile Calculator
Find a percentile with linear interpolation.
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Z-Score Calculator
Express a value in standard deviations from the mean.
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Probability Calculator
Calculate a simple probability and its complement.
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Triangle Area Calculator
Find area, perimeter and height from three side lengths.
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Circle Calculator
Calculate circle area, circumference and diameter.
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Rectangle Calculator
Calculate area, perimeter and diagonal.
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Trapezoid Area Calculator
Find area from two parallel bases and a height.
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Regular Polygon Calculator
Area, perimeter and interior angle of a regular polygon.
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Cylinder Calculator
Volume and total surface area of a closed cylinder.
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Cone Calculator
Volume, slant height and total surface area.
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Sphere Calculator
Calculate volume and surface area from a radius.
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Cuboid Calculator
Volume, surface area and space diagonal of a box.
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Distance & Midpoint Calculator
Measure between two points on a flat coordinate plane.
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Slope Calculator
Find slope and intercept from two points.
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Pythagorean Calculator
Find a hypotenuse or missing leg in a right triangle.
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Scientific Notation Converter
Express a number using a coefficient and power of ten.
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Rounding Calculator
Round, floor or ceil a number at a chosen decimal place.
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Simple Interest Calculator
Calculate interest without compounding.
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Loan Payoff Calculator
Estimate repayment time with a fixed monthly payment.
CalculatorsOpen tool
Savings Goal Calculator
Find the monthly contribution needed to reach a goal.
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ROI Calculator
Compare total return with the initial investment.
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CAGR Calculator
Annualize growth between a starting and ending value.
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Inflation Scenario Calculator
Model purchasing power at a constant inflation rate.
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Salary Converter
Convert gross hourly pay to weekly, monthly and annual pay.
CalculatorsOpen tool
Freelance Rate Calculator
Estimate a billable rate from revenue needs and available hours.
CalculatorsOpen tool
Sales Tax Calculator
Calculate tax and total price at an entered rate.
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Payment Fee Calculator
Estimate a percentage fee plus a fixed transaction charge.
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Straight-Line Depreciation
Spread depreciable cost evenly across useful life.
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Fuel Cost Calculator
Estimate fuel needed and trip cost in metric units.
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Electricity Cost Calculator
Estimate appliance energy use and cost.
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Unit Price Comparison
Compare the cost per unit of two packages.
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Running Pace Calculator
Calculate average pace and speed from distance and time.
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Speed, Distance & Time
Solve one of the three quantities from the other two.
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Reverse text
Reverse Unicode code points in a piece of text.
Text toolsOpen tool
Reverse word order
Reverse whitespace-separated words while keeping each word intact.
Text toolsOpen tool
Reverse lines
Turn the last line into the first without changing line contents.
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Shuffle lines
Randomly reorder a list using browser cryptographic randomness.
Text toolsOpen tool
Number lines
Add sequential numbers to each line.
Text toolsOpen tool
Add prefix and suffix
Add the same beginning and ending to each line.
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Join lines
Combine nonempty lines using a chosen separator.
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Split text
Split text at a literal separator and put each part on its own line.
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Extract email addresses
Find and deduplicate email-like addresses in pasted text.
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Extract web links
Extract HTTP and HTTPS links from plain text.
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Word frequency
Count case-insensitive words and sort by frequency.
Text toolsOpen tool
Word phrase frequency
Count consecutive groups of words in a passage.
Text toolsOpen tool
Character frequency
Count every Unicode code point, including spaces and newlines.
Text toolsOpen tool
Compare text lines
Compare two texts at matching line positions.
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Truncate text
Shorten text to a maximum code-point length with an optional ending.
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Repeat text
Repeat a short text with a custom separator.
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Wrap text
Wrap whitespace-separated words to a target line width.
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Pad text lines
Pad the start or end of each line to a target width.
Text toolsOpen tool
Remove punctuation
Remove Unicode punctuation while retaining letters, numbers and spaces.
Text toolsOpen tool
Extract digits
Keep only ASCII digits from pasted text.
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Unicode inspector
Inspect characters as Unicode code points and UTF-8 bytes.
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Normalize Unicode
Convert Unicode text to NFC, NFD, NFKC or NFKD form.
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ASCII code converter
Convert basic ASCII text to decimal codes and back.
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Morse code translator
Encode letters and digits or decode space-separated Morse symbols.
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ROT13 converter
Apply the reversible ROT13 substitution to English letters.
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Caesar cipher
Shift English letters by a chosen amount.
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Text to binary
Encode text as UTF-8 binary bytes or decode bytes back to text.
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Text to hex
Encode text as UTF-8 hexadecimal bytes or decode bytes back to text.
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Split sentences
Put likely English sentences on separate lines.
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Acronym maker
Build initials from words in a name or phrase.
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List to CSV row
Convert a line-separated list to one properly quoted CSV row.
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CSV row to list
Convert one CSV record into a line-separated list.
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Unicode escape encoder
Encode every UTF-16 unit as a JavaScript-style Unicode escape.
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Unicode escape decoder
Decode literal four-digit Unicode escapes without executing code.
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Escape Markdown
Escape common Markdown punctuation for literal text.
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JSON to CSV
Convert a JSON array of objects to a CSV table.
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Sort JSON keys
Alphabetize object keys recursively while preserving array order.
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List JSON paths
List leaf values with unambiguous JSON Pointer paths.
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Extract JSON value
Extract a value using a JSON Pointer path.
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Merge JSON objects
Combine two objects with right-hand values taking precedence.
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Compare JSON
Compare JSON values while ignoring object-key order.
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Filter JSON records
Keep records whose selected top-level field matches a JSON value.
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URL parser
Inspect the components and query parameters of a web address.
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Query string parser
Decode query parameters while preserving repeated keys.
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Query string builder
Encode a JSON object as a URL query string.
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UTM campaign URL builder
Add campaign tracking parameters to a destination URL.
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Remove URL tracking parameters
Remove common campaign and click identifiers from a URL.
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Number base converter
Convert signed integers between binary, octal, decimal and hexadecimal.
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RGB to HEX
Convert red, green and blue channel values to a hexadecimal color.
DeveloperOpen tool
HSL to RGB and HEX
Convert hue, saturation and lightness into an RGB color.
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CSS gradient generator
Create CSS for a two-color linear gradient.
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CSS box shadow generator
Generate a configurable single CSS box shadow.
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Fluid font size calculator
Generate a CSS clamp that interpolates font size across viewport widths.
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REM and pixel converter
Convert CSS lengths using a specified root font size.
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Aspect ratio calculator
Simplify pixel dimensions and calculate a proportional output height.
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Data size converter
Convert decimal and binary byte units with explicit unit definitions.
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File transfer time
Estimate transfer duration from file size and connection speed.
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JSON to HTML table
Generate escaped HTML table markup from JSON records.
DeveloperOpen tool
SEO meta tag generator
Generate title, description, canonical and social sharing tags.
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JWT payload decoder
Inspect a JWT header and payload without sending the token anywhere.
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SHA-512 text hash
Calculate the SHA-512 digest of UTF-8 text.
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SHA-1 legacy checksum
Calculate the SHA-1 digest of UTF-8 text.
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HMAC-SHA256 generator
Create a keyed SHA-256 message authentication code.
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JSON string escape
Turn arbitrary text into a valid quoted JSON string.
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JSON string unescape
Decode a quoted JSON string into plain text.
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IPv4 subnet calculator
Calculate network, broadcast and address range from IPv4 CIDR.
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IPv4 binary converter
Convert an IPv4 address into binary octets and an unsigned integer.
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HTML attribute builder
Convert a JSON object into escaped HTML attribute text.
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CSS spacing scale
Generate custom properties for a geometric spacing scale.
DeveloperOpen tool
Sort JSON records
Sort JSON objects by one string or numeric field.
DeveloperOpen tool
Add or subtract days
Find the date a specified number of calendar days away.
Time & randomOpen tool
Weekday counter
Count Monday–Friday dates between two dates.
Time & randomOpen tool
Add working days
Move forward or backward by weekdays, excluding the starting date.
Time & randomOpen tool
ISO week number
Find the ISO week-year, week number and weekday for a date.
Time & randomOpen tool
Day of year
Find a date’s ordinal day and the number of days left in its year.
Time & randomOpen tool
Leap year checker
Check whether a Gregorian calendar year contains February 29.
Time & randomOpen tool
Monthly calendar generator
Create a copyable Monday-first calendar for a month.
Time & randomOpen tool
Unix timestamp converter
Convert Unix seconds or milliseconds to an ISO UTC date, or reverse it.
Time & randomOpen tool
Duration unit converter
Convert a duration between seconds, minutes, hours, days and weeks.
Time & randomOpen tool
Time difference calculator
Measure elapsed time between two clock times.
Time & randomOpen tool
Add time durations
Add a list of hours:minutes durations.
Time & randomOpen tool
Decimal hours converter
Convert decimal hours to hours and minutes, or reverse.
Time & randomOpen tool
Day of week finder
Find the weekday for a calendar date.
Time & randomOpen tool
Date format converter
Render an ISO date in several unambiguous or commonly used formats.
Time & randomOpen tool
Work hours calculator
Calculate net shift duration after an unpaid break.
Time & randomOpen tool
Grayscale image
Turn a photo into a luminance-weighted grayscale image.
Image toolsOpen tool
Invert image colors
Invert the RGB channels while keeping image transparency.
Image toolsOpen tool
Adjust image brightness
Multiply image channel values to make an image brighter or darker.
Image toolsOpen tool
Adjust image contrast
Expand or compress channel values around middle gray.
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Adjust image saturation
Increase or reduce color relative to luminance.
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Sepia image filter
Apply a warm sepia matrix to a photograph.
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Flip image
Mirror an image horizontally or vertically.
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Add image border
Add an even solid-color border around an image.
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Text watermark
Place a text watermark at the center or bottom of an image.
Image toolsOpen tool
Pixelate image
Create a blocky pixel-art effect across an entire image.
Image toolsOpen tool
Recipe quantity scaler
Scale ingredient amounts from original servings to a new portion count.
Everyday lifeOpen tool
Cooking volume converter
Convert metric volumes and US customary cooking measures.
Everyday lifeOpen tool
Paint quantity estimator
Estimate paint volume from surface area, coverage and number of coats.
Everyday lifeOpen tool
Tile quantity estimator
Estimate the number of rectangular tiles for a measured area.
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Garden soil volume
Calculate the volume of soil for a rectangular bed.
Everyday lifeOpen tool
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HELP WHEN YOU NEED IT
Not sure which option to choose?
When should you use PNG? What is the difference between margin and markup?
Our guides walk you through the details, with examples.
01 / ON YOUR DEVICE
Your files stay with you.
The tools process your images and text in your browser. You can work with a file without uploading it to our servers.
02 / PRACTICAL EXAMPLES
Know what the result means.
Each tool includes an example and notes on its limits, so you can check whether it fits the job.
03 / EASY TO FIND AGAIN
Come back to your favorites.
Star the tools you use often, or reopen one from your recent list. These shortcuts stay in this browser.