Unit Converter
Convert length, weight, volume, temperature, speed, area, time, digital storage, pressure, energy, power, force, angle, and frequency instantly — free, accurate, and no sign-up required.
Conversions use standard internationally recognized factors and update instantly as you type. Values are calculated entirely in your browser.
Common conversions people search for
Some conversions come up again and again — cooking measurements, travel distances, and everyday temperature checks. Here's a quick-reference table for a few of the most frequent ones:
| Conversion | Result |
|---|---|
| 1 inch | 2.54 centimeters |
| 1 mile | 1.60934 kilometers |
| 1 kilogram | 2.20462 pounds |
| 1 gallon (US) | 3.78541 liters |
| 100°C | 212°F |
| 0°C | 32°F |
| 60 mph | 96.5606 km/h |
| 1 acre | 4,046.86 square meters |
Use the converter above for any value and unit pair — these are just the ones people look up most often.
How the conversions work
Most categories on this page — length, weight, volume, speed, area, time, digital storage, pressure, energy, power, force, angle, and frequency — convert by multiplying your value by a fixed factor to get a common base unit (like meters or kilograms), then dividing by the target unit's factor. This is why 1 mile always equals exactly 1.609344 kilometers, no matter how many miles you enter.
Frequently asked questions
How accurate are the conversions on this tool?
All conversions use standard, internationally recognized conversion factors (for example, exactly 2.54 centimeters per inch and 0.45359237 kilograms per pound), so results are precise to the number of decimal places shown.
Does this unit converter work for temperature conversions too?
Yes. Temperature uses the correct formulas rather than a simple multiplier — for example Fahrenheit to Celsius is (°F − 32) × 5/9 — so Celsius, Fahrenheit, and Kelvin all convert accurately.
Is my data stored or sent anywhere?
No. Every conversion happens instantly in your own browser using JavaScript. Nothing you type is transmitted to or stored on any server.
What unit categories can I convert?
This tool covers length, weight and mass, volume, temperature, speed, area, time, digital storage, pressure, energy, power, force, angle, and frequency, with all of the most commonly used units in each category.
Learn more about units
Metric vs Imperial: A Quick Reference Guide
Why two systems exist and how to translate between them quickly.
Converting Celsius and Fahrenheit
The formulas and simple shortcuts for temperature conversion.
Cooking and Baking Unit Conversions
Cups, tablespoons, grams, and ounces for the kitchen.
MPH, KPH, and Knots Explained
How speed units compare and where each one is used.