Unit Converters calculators
Free online converters for length, weight, temperature, speed, and area — anything with a clear formula.
Paste a number, pick the units, move on with your day.
- Celsius to Fahrenheit Calculator
Convert temperature instantly between Celsius, Fahrenheit, and Kelvin. Includes a quick-reference table of common temperatures.
- Pounds to Kilograms Calculator
Convert weight between pounds, kilograms, ounces, grams, stone, milligrams, metric tons, and short tons using exact NIST conversion factors.