Unit Converters
2676 free unit converters — including Celsius to Fahrenheit Converter and Kilograms to Pounds Converter. Instant results in your browser, with the formula shown.
British Thermal Units to Kilojoules Converter
Free online tool — instant, accurate conversions in your browser.
British Thermal Units to Calories Converter
Free online tool — instant, accurate conversions in your browser.
British Thermal Units to Electronvolts Converter
Free online tool — instant, accurate conversions in your browser.
British Thermal Units to Foot-pounds Converter
Free online tool — instant, accurate conversions in your browser.
British Thermal Units to Ergs Converter
Free online tool — instant, accurate conversions in your browser.
British Thermal Units to Megaelectronvolts Converter
Free online tool — instant, accurate conversions in your browser.
Foot-pounds to Joules Converter
Free online tool — instant, accurate conversions in your browser.
Foot-pounds to Electronvolts Converter
Free online tool — instant, accurate conversions in your browser.
Foot-pounds to Ergs Converter
Free online tool — instant, accurate conversions in your browser.
Foot-pounds to Megaelectronvolts Converter
Free online tool — instant, accurate conversions in your browser.
Ergs to Electronvolts Converter
Free online tool — instant, accurate conversions in your browser.
Ergs to Megaelectronvolts Converter
Free online tool — instant, accurate conversions in your browser.
Therms to Joules Converter
Free online tool — instant, accurate conversions in your browser.
Therms to Kilojoules Converter
Free online tool — instant, accurate conversions in your browser.
Therms to Megajoules Converter
Free online tool — instant, accurate conversions in your browser.
Therms to Calories Converter
Free online tool — instant, accurate conversions in your browser.
Therms to Kilocalories Converter
Free online tool — instant, accurate conversions in your browser.
Therms to Watt-hours Converter
Free online tool — instant, accurate conversions in your browser.
Therms to Kilowatt-hours Converter
Free online tool — instant, accurate conversions in your browser.
Therms to Electronvolts Converter
Free online tool — instant, accurate conversions in your browser.
Therms to British Thermal Units Converter
Free online tool — instant, accurate conversions in your browser.
Therms to Foot-pounds Converter
Free online tool — instant, accurate conversions in your browser.
Therms to Ergs Converter
Free online tool — instant, accurate conversions in your browser.
Therms to Horsepower-hours Converter
Free online tool — instant, accurate conversions in your browser.
Therms to Megaelectronvolts Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Joules Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Kilojoules Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Megajoules Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Calories Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Kilocalories Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Watt-hours Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Kilowatt-hours Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Electronvolts Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to British Thermal Units Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Foot-pounds Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Ergs Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Therms Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Horsepower-hours Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Gigajoules Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Megawatt-hours Converter
Free online tool — instant, accurate conversions in your browser.
Tons of TNT to Megaelectronvolts Converter
Free online tool — instant, accurate conversions in your browser.
Horsepower-hours to Joules Converter
Free online tool — instant, accurate conversions in your browser.
Horsepower-hours to Kilojoules Converter
Free online tool — instant, accurate conversions in your browser.
Horsepower-hours to Megajoules Converter
Free online tool — instant, accurate conversions in your browser.
Horsepower-hours to Calories Converter
Free online tool — instant, accurate conversions in your browser.
Horsepower-hours to Kilocalories Converter
Free online tool — instant, accurate conversions in your browser.
Horsepower-hours to Watt-hours Converter
Free online tool — instant, accurate conversions in your browser.
Horsepower-hours to Electronvolts Converter
Free online tool — instant, accurate conversions in your browser.
US versions — all US-unit converters (124)
bushel (21)
cup (11)
fluid ounce (8)
gallon (17)
gallon per hour (1)
gallon per minute (3)
gill (10)
pint (12)
quart (14)
tablespoon (5)
teaspoon (3)
ton (19)
About Unit Converters
2676 free Unit Converters tools are listed on this page, led by Celsius to Fahrenheit Converter, Kilograms to Pounds Converter and Kilometers to Miles Converter in popularity order. Each computes its result directly in your browser and shows the formula it applies. The collection breaks down into 6 subcategories — the largest are Length (1088), Volume (482). No accounts, no fees — every answer ships with the arithmetic behind it.
What you can calculate
Length, Volume, Weight, Area, Speed
Top Unit Converters Calculators
Length Converter
Convert between different units of length including meters, feet, inches, and kilometers.
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin temperature scales.
Celsius to Fahrenheit Converter
Convert temperature from Celsius to Fahrenheit and vice versa.
Kilometers to Miles Converter
Convert distances between kilometers and miles.
Kilograms to Pounds Converter
Convert weight between kilograms and pounds.
FAQs about Unit Converters
What is the best calculator in the Unit Converters category?
The most popular Unit Converters tools on this site are Celsius to Fahrenheit Converter, Kilograms to Pounds Converter and Kilometers to Miles Converter, in that order. All are free, run instantly in your browser, and show their calculation steps — pick the closest to your case or try more than one.
Are the Unit Converters calculators free to use?
Yes — all 2676 tools in the Unit Converters category are completely free: they run in your browser with no sign-up and never send your inputs anywhere. Enter your values and the result appears instantly, with the formula used shown.
How many calculators are in the Unit Converters category?
The Unit Converters category currently lists 2676 free tools across 6 subcategories, the largest being Length (1088), Volume (482), Weight (454). Use the filter chips at the top of the list to jump straight to the type you need.