trustedonlinetools

Search tools

⌘K

Energy Converter

Convert between energy units — joules, calories, kilocalories, kilowatt-hours, and BTU. Handy for nutrition labels, electricity bills, heating, and physics problems.

Popular energy conversions

Kilocalorie (kcal) to Kilojoule (kJ)Kilojoule (kJ) to Kilocalorie (kcal)Calorie (cal) to Joule (J)Joule (J) to Calorie (cal)Kilowatt-hour (kWh) to Joule (J)British Thermal Unit (BTU) to Joule (J)Joule (J) to British Thermal Unit (BTU)Kilocalorie (kcal) to Calorie (cal)Watt-hour (Wh) to Joule (J)Kilowatt-hour (kWh) to British Thermal Unit (BTU)Joule (J) to Kilojoule (kJ)

All energy conversions

Grouped by source unit

JouleJ

to Kilojoule to Calorie to Kilocalorie to Watt-hour to Kilowatt-hour to British Thermal Unit to Electronvolt to Foot-pound

KilojoulekJ

to Joule to Calorie to Kilocalorie to Watt-hour to Kilowatt-hour to British Thermal Unit to Electronvolt to Foot-pound

Caloriecal

to Joule to Kilojoule to Kilocalorie to Watt-hour to Kilowatt-hour to British Thermal Unit to Electronvolt to Foot-pound

Kilocaloriekcal

to Joule to Kilojoule to Calorie to Watt-hour to Kilowatt-hour to British Thermal Unit to Electronvolt to Foot-pound

Watt-hourWh

to Joule to Kilojoule to Calorie to Kilocalorie to Kilowatt-hour to British Thermal Unit to Electronvolt to Foot-pound

Kilowatt-hourkWh

to Joule to Kilojoule to Calorie to Kilocalorie to Watt-hour to British Thermal Unit to Electronvolt to Foot-pound

British Thermal UnitBTU

to Joule to Kilojoule to Calorie to Kilocalorie to Watt-hour to Kilowatt-hour to Electronvolt to Foot-pound

ElectronvolteV

to Joule to Kilojoule to Calorie to Kilocalorie to Watt-hour to Kilowatt-hour to British Thermal Unit to Foot-pound

Foot-poundft·lb

to Joule to Kilojoule to Calorie to Kilocalorie to Watt-hour to Kilowatt-hour to British Thermal Unit to Electronvolt