All 443 free tools and converters

Length & distance

Metric and imperial lengths, from picometres to miles.

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1 Mile to Feet 2 m to inches CM to Feet CM to Inches CM to KM CM to M Cubits to Feet Earth Radius FT to CM Feet to Inches Feet to Metres Feet to Miles Feet to MM Feet to Yards FT to IN Ft to Inch FT to Meter FT to MM FT to Yards IN to FT Inches to CM Inches to Feet Inches to Metres Inches to Miles Inches to MM Inches to Px Inches to Yards KM to Feet KM to M KM to Miles KM to MM KM to Mile Meters to Inches M to CM Metres to Feet M to Inches M to KM M to µm Metres to Miles M to MM M to nm Metres to Yards MI to M µm to M Mile to Km Miles to Feet Miles to KM Miles to Metres Miles to Yards MM to CM MM to Feet MM to Inches MM to KM MM to M MM to Ft nm to M nm to Miles Picometre Pixels to Inches Yards to Feet Yards to Metres Yards to Miles YD to FT

Weight & mass

Grams, kilograms, ounces, pounds, stones and tons.

31

Volume & capacity

Cups, spoons, millilitres, litres, gallons, pints and quarts.

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cc to in³ cc to fl oz cm³ to L cc to mL ft³ to m³ ft³ to yd³ ft³ to Gallons in³ to cc in³ to ft³ in³ to Gallons m³ to L yd³ to ft³ Cup to mL Cup to Tbsp Cups to fl oz Cups to L Cups to Litres Cups to mL Cups to Pints Cups to Quarts Cups to Tbsp Cups to Tsp dL to L fl oz to Gallons fl oz to L fl oz to mL fl oz to Pints fl oz to Quarts fl oz to Tsp Gallon to mL Gallons to ft³ Gallons to fl oz Gallons to FT3 Gallons to Litres Gallons to mL Gallons to Quarts L to FT3 Liter to Quart L to ft³ L to m³ Litres to Cups L to fl oz Litres to Gallons L to mL Litres to Quarts mL to cc mL to Cups mL to fl oz mL to L mL to µL mL to Quarts mL to Tbsp mL to Tsp Pints to Cups Pints to fl oz Pints to Quarts QT to Liter Quart to Cups Quarts to Cups Quarts to fl oz Quarts to Litres Quarts to mL Tablespoon to mL Tbsp to Cups Tbsp to fl oz Tbsp to mL Tbsp to Tsp Tbsp to Cup Tsp to Cup Tsp to mL Tsp to Tbsp

Temperature

Celsius, Fahrenheit, Kelvin and Rankine in every direction.

9

27 °C to °F Celsius to Fahrenheit Celsius to Kelvin Fahrenheit to Celsius Fahrenheit to Kelvin Fahrenheit to Rankine Kelvin to Celsius Kelvin to Fahrenheit Temperature

Cooking & baking

Cup-to-gram conversions by ingredient, oven temperatures and tin sizes.

7

Baking Tin Sizes Butter Converter Cooking Measures Cups to Grams Grams to Cups Oven Temperatures Recipe Scaler

Area

Acres, hectares, square feet, square metres and square miles.

15

AC to SF Acre to Hectare Acres to Sq Miles Acres to ft² Acres to m² Acres to mi² Hectare to Acre Sq Mi to Acres Sq Ft to Acre ft² to Acres ft² to m² ft² to yd² m² to ft² mi² to Acres yd² to ft²

Speed & velocity

Kilometres per hour, miles per hour, knots and metres per second.

8

KM/H to M/S KMH to MPH Knots to MPH M/S to MPH Metres/s to mph MPH to Knots MPH to KPH MPH to M/S

Pressure

PSI, bar, pascal, kilopascal, atmosphere and torr.

15

atm to kPa atm to Pa Atmospheres to Pascals Bar to kPa kPa to atm kPa to Bar kPa to PSI MPa to PSI MPa to Pa Pa to PSI PSI to Bar PSI to kPa PSI to MPa PSI to Pascal Torr to atm

Energy, power & force

Joules, calories, watts, horsepower, newtons and torque.

22

Data & storage

Bytes, kilobytes, megabytes, gigabytes, terabytes and bitrates.

13

Bytes to GB Bytes to MB GB to MB GB to TB Gigabit to MB Hex to Decimal KB to GB KB to MB Kbps to Mbps MB to Bytes MB to GB MB to KB TB to GB

Time

Seconds, minutes, hours, days, months and years.

15

Days to Hours Days to Months Days to Years Hours to Days Hours to Minutes Hours to Seconds Hours to Years ms to Minutes Minutes to Hours Minutes to ms Minutes to Seconds Seconds to Days Seconds to Hours Seconds to ms Seconds to Minutes

Science & maths

Moles, concentration, charge, frequency and angles.

7

CTR Calculator mg/L to PPM MHz to Hz µC to C mmol to mol nC to C Radians to Degrees

Device & hardware tests

Check a microphone, webcam, gamepad, keyboard, mouse or screen straight from the browser.

22

Speed & network tests

Measure download, upload, ping and general connection quality.

6

Bandwidth Test Download Speed Test Network Latency Test Online Ping Tester Upload Speed Test WiFi Speed Test

Audio & music

Tuners, a metronome, tone generators and hearing checks.

8

BPM Tapper Chromatic Tuner Guitar Tuner Hearing Range Test Metronome Note Frequencies Tone Generator Voice Recorder

Screen & display

Pixel density, aspect ratios, screen dimensions and viewing distance.

5

Aspect Ratio PPI Calculator Screen Dimensions Viewing Distance My Screen Resolution

Typing & reaction

Words per minute, reaction time and clicking-speed measurements.

7

Click Speed Test CPS Test FPS Tester Reaction Time Type Speed Test Typing Speed Test Typing WPM Test

Clickers & counters

Idle clickers, tally counters and scoreboards that run entirely in the page.

7

Candy Clicker Click Counter Cookie Clicker Roblox Clicker Scoreboard Space Bar Clicker Test Space Clicker

Self-assessment quizzes

Informal, unscored questionnaires people search for by name.

3

Anxiety Test Autism Test Enneagram Test

Text & developer utilities

Counting, converting, encoding and checking text, all in the page.

21

Percentages & maths

Percentages, fractions, ratios, discounts and averages.

14

Average Calculator Discount Calculator Fraction to Decimal Percentage Calculator Percentage Change Percentage Decrease Percentage Difference Percentage Increase Ratio Calculator Remove VAT Calculator Reverse Percentage Tip Calculator VAT Calculator X is what % of Y

Images & photos

Resize, compress, convert and crop — all inside your browser.

12

EXIF Remover Favicon Generator Image Compressor Image Cropper Image Resizer Image Rotator Image to Base64 Image to WebP JPG to PNG PNG to JPG WebP to JPG WebP to PNG

PDF tools

Merge, split, rotate and convert PDFs without uploading them.

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Delete PDF Pages Images to PDF Merge PDF PDF Info PDF to Images PDF to JPG PDF to Text Rotate PDF Split PDF

Colour & accessibility

Convert colour formats, check contrast and build palettes.

9

Colour Blindness Simulator Contrast Checker Colour Converter Palette Generator Gradient Generator HEX to HSL HEX to RGB RGB to HEX Shades & Tints

Money & everyday finance

Loans, interest, margins and salaries — the arithmetic, shown.

9

Break-Even Calculator Compound Interest Hourly to Salary Loan Calculator Markup Calculator Profit Margin Calculator Salary to Hourly Savings Goal Simple Interest

Dates & calendars

Days between dates, ages, timestamps, time zones and working days.

8

Age Calculator Date Calculator Days Between Dates Days Until Time Zone Converter Unix Timestamp Week Number Working Days

Encoding & ciphers

Morse, binary, hex and the classical ciphers — explained and broken.

10

Atbash Cipher Binary to Text Caesar Cipher Hex to Text Morse Code NATO Phonetic ROT13 Text to Binary Text to Hex Vigenère Cipher

Random & decision

Dice, coins, shuffles and pickers, all cryptographically random.

6

Coin Flip Dice Roller Password Generator Random Numbers Random Picker Team Generator

Sizes & standards

Shoe, ring, clothing, paper and wire sizes across countries.

5

Clothing Sizes Paper Sizes Ring Sizes Shoe Sizes Wire Gauge

Reference charts

The periodic table, Greek alphabet, SI prefixes, ASCII and more.

6

ASCII Table Greek Alphabet Times Tables Periodic Table Roman Numerals SI Prefixes

Convert units

Test your device

Measure and count

Everything

Every tool, on one page