Unit Converters
Type a number, pick two units and see the answer at once. Our unit converters cover length, weight, temperature, area, volume, time, speed, data and more. All conversions are fast, accurate and easy to use.
8 Unit Converters
Temperature Converter°C, °F, K
Length Convertermm, cm, m, km, inch, ft
Weight Converterkg, gram, lb, oz, ton
Area Converterm², km², ft², acre, etc.
Volume ConverterLiter, m³, gallon, etc.
Time Convertersec, min, hr, day, week
Speed Converterkm/h, m/s, mph, knot
Data Converterbit, byte, KB, MB, GB
Popular Conversions
Go straight to one conversion. Each page has its own chart, examples and answers to common questions.
Celsius to Fahrenheit25 °C = 77 °F
Fahrenheit to Celsius77 °F = 25 °C
CM to Inches20 cm = 7.874 in
Inches to CM15 in = 38.1 cm
Oz to ML8 fl oz = 236.5882 ml
Inches to Feet70 in = 5.8333 ft
Tablespoons to Cups4 tbsp = 1/4 cup
Ounces in a Quart1 qt = 32 fl oz
Celsius to Kelvin25 °C = 298.15 K
Kelvin to Celsius300 K = 26.85 °C
Fahrenheit to Kelvin77 °F = 298.15 K
Kelvin to Fahrenheit300 K = 80.33 °F
Unit Converters Explained
Unit converters turn a value from one unit into another, such as kilometers into miles or kilograms into pounds. Ours use the exact, internationally defined factors wherever one exists, work in both directions, and cover metric as well as imperial and US units. Everything is calculated in your browser, so the numbers you type are never sent anywhere.
They are handy for cooking, travel, shopping, school work and DIY. Try the Temperature Converter for °C, °F and K, the Length Converter for miles, feet and inches, or the Weight Converter for pounds, ounces and kilograms. Pick a converter above to get started.
Frequently Asked Questions
Are the unit converters accurate?
Yes. The converters use the exact definitions wherever one exists, such as 1 inch = 0.0254 meters, 1 foot = 0.3048 meters and 1 pound = 0.45359237 kilograms, and the sums run in your browser. Answers are rounded only when they are shown.
What units are supported?
There are converters for temperature (°C, °F, K), length, weight, area, volume, time, speed (km/h, m/s, mph, knots) and data (bits and bytes, in both KB, MB, GB and KiB, MiB, GiB). Open a converter to see every unit it offers.
Can I convert between metric and imperial units?
Yes. Pick a metric unit on one side and an imperial or US unit on the other, for example kilometers to miles, kilograms to pounds or liters to gallons. The converter works both ways.
Do I need to create an account to use the converters?
No. Every converter is free and needs no sign-up. The numbers you type stay in your browser and are not sent anywhere.
