Unit converters
Length Converter (m, cm, ft, in)
Convert lengths between millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles instantly.
Open toolTool categories
Unit converters
One value in, every unit out. Each converter accepts free numeric input, shows the main result instantly, and lists the same value across all supported units. Time zone conversion uses the browser IANA database, and currency uses clearly labeled approximate reference rates.
9active tools
Who it is for
Who it is for
Converters serve students solving homework, cooks scaling recipes, travelers comparing distances and currency, engineers checking specifications, and developers working with data sizes. One consistent workflow covers nine unit categories.
What you can do here
What you can do here
- Convert centimeters to inches and back
- Switch between Celsius and Fahrenheit
- Convert weights for cooking and fitness
- Compare currencies and time zones
- Convert data sizes for storage planning
- Swap any unit pair in one step with a full table
Featured tools
Featured tools
Unit converters
Weight and Mass Converter (kg, lb, oz)
Convert weight and mass between milligrams, grams, kilograms, tons, ounces, pounds, stones, and short or long tons instantly.
Open toolUnit converters
Temperature Converter (C, F, K)
Convert temperatures between Celsius, Fahrenheit, Kelvin, and Rankine with exact formulas and instant results.
Open toolUnit converters
Currency Converter (Approximate Rates)
Convert amounts between major world currencies with an approximate reference rate table, clearly marked as not live and not financial advice.
Open toolA practical connected workflow
A practical connected workflow
Enter a value or file, let the browser do the work, and download or copy the result.
- 1Add your input
- 2Choose the options
- 3Review the result
- 4Download
Built for repeat daily work
Every active tool includes a working interface, clear instructions, examples, privacy details, limitations, and direct links to related tasks.
Data processing noticeAll tools in this category
All tools in this category
Unit converters
Length Converter (m, cm, ft, in)
Convert lengths between millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles instantly.
Open toolUnit converters
Weight and Mass Converter (kg, lb, oz)
Convert weight and mass between milligrams, grams, kilograms, tons, ounces, pounds, stones, and short or long tons instantly.
Open toolUnit converters
Temperature Converter (C, F, K)
Convert temperatures between Celsius, Fahrenheit, Kelvin, and Rankine with exact formulas and instant results.
Open toolUnit converters
Area Converter (m2, ft2, acres, ha)
Convert areas between square meters, square feet, acres, hectares, square miles, and more with instant results.
Open toolUnit converters
Volume Converter (L, mL, gal, cups)
Convert volumes between liters, milliliters, gallons, cups, fluid ounces, cubic meters, and more with instant results.
Open toolUnit converters
Speed Converter (km/h, mph, knots)
Convert speeds between kilometers per hour, miles per hour, meters per second, knots, and feet per second instantly.
Open toolUnit converters
Data Size Converter (bytes, KB, MB, GB)
Convert file sizes between bytes, kilobytes, megabytes, gigabytes, and terabytes in both decimal and binary units.
Open toolUnit converters
Time Zone Converter (World Clock)
Convert a date and time between any two world time zones with the browser IANA database and daylight saving awareness.
Open toolUnit converters
Currency Converter (Approximate Rates)
Convert amounts between major world currencies with an approximate reference rate table, clearly marked as not live and not financial advice.
Open toolGuides and solutions
Guides and solutions
Go deeper with practical guides and step-by-step workflows built around these tools.
How to convert cooking units: grams, cups, and ounces
A guide to converting cooking measurements: grams, cups, ounces, and milliliters, with the density caveats that matter in recipes.
Learn moreWhat local browser processing means for online tools
A transparent explanation of local tool processing, temporary browser memory, local storage, downloads, analytics boundaries, and cases that require remote services.
Learn moreConvert kilograms to pounds and back
One kilogram equals 2.20462 pounds, and one pound equals 0.453592 kilograms. The [weight converter](tool:weight-converter) applies those constants instantly in both directions, with a full table for surrounding units.
Open solutionConvert centimeters to inches and back
One inch is exactly 2.54 centimeters. The [length converter](tool:length-converter) applies that constant instantly in both directions, with a full table so you can compare surrounding units.
Open solutionConvert Celsius to Fahrenheit and back
Weather, cooking, and travel all mix Celsius and Fahrenheit. The [temperature converter](tool:temperature-converter) converts between C and F instantly, including Kelvin for scientific work.
Open solutionConvert any unit online in one place
Recipes, packages, workouts, travel, and coursework all need unit conversions. The online [length converter](tool:length-converter) covers nine categories in one place, with instant results and a full conversion table on every page, so you never need to remember a formula.
Open solutionSkip the converter app and convert in your browser
Converter apps take up storage, demand updates, ask for permissions, and often hide features behind accounts. The browser [length converter](tool:length-converter) replaces them: open one URL, type a value, and convert any unit with nothing to install, update, or grant access to.
Open solutionCategory questions
Category questions
No. All converters are free and work without registration.
Unit conversions use exact definitions. Currency uses an approximate reference table that is clearly labeled as not live and not financial advice.
No. Conversion happens locally in your browser.
Related categories
