Eight Categories of Conversions in One Place
How many tablespoons in a cup? (16.) How many kilometers in a mile? (1.609.) How many PSI in one atmosphere? (14.696.) You could Google each one individually, or you could convert everything from one tool that shows all units in a category simultaneously.
Pick a category, Length, Weight, Temperature, Area, Volume, Speed, Pressure, or Energy, enter a value, choose your source unit, and see every conversion in that category at once.
What’s Covered
- Length: mm, cm, m, km, inches, feet, yards, miles
- Weight: mg, g, kg, ounces, pounds, tons
- Temperature: Celsius, Fahrenheit, Kelvin
- Area: mm², cm², m², km², in², ft², acres, hectares
- Volume: ml, liters, gallons, quarts, pints, cups, tablespoons, teaspoons, fluid ounces
- Speed: m/s, km/h, mph, knots
- Pressure: Pa, kPa, bar, psi, atm
- Energy: J, kJ, cal, kcal, Wh, kWh, BTU
Enter 5 miles and you’ll see 8.047 km, 8,046.72 meters, 26,400 feet, 8,800 yards, and everything else, all at once.
When You Need This
Cooking. A British recipe calls for 250ml of cream. You’ve got measuring cups. That’s about 1.06 cups. The volume category handles this along with the tablespoon/teaspoon conversions that international recipes constantly require.
Traveling abroad. Speed limits in Europe are posted in km/h. If it says 130, that’s about 81 mph. Temperature forecasts in Celsius make no sense to Fahrenheit thinkers (and vice versa) until you convert.
Engineering and science. Pressure in atmospheres, energy in BTU vs. kilowatt-hours, speed in knots for maritime work. Different industries and countries use different unit systems, and the conversion factors aren’t always intuitive.
Fitness. Your gym buddy in Europe tracks weight in kilos. You think in pounds. 80 kg is 176.4 lbs, for the record.
Construction. Working with both metric and imperial blueprints on the same project. Happens more often than you’d think, especially on international collaborations.
The Temperature Exception
Temperature is the one category that doesn’t use simple multiplication. You can’t just multiply Celsius by a factor to get Fahrenheit, the formula involves both multiplication and addition (F = C x 9/5 + 32). The converter handles this correctly with formulas instead of conversion factors. For a dedicated temperature experience with all three scales, the Temperature Converter is focused on just that.
The Currency Converter covers money conversions if you need those too. Everything runs in your browser, nothing gets transmitted.