Energy Converter

Convert between energy and power units

Download Printable Conversion Table (PDF)

Popular Energy Conversions

Joule → Calorie

J → cal

Calorie → Joule

cal → J

Kilowatt Hour → Joule

kWh → J

Joule → Kilowatt Hour

J → kWh

BTU → Kilowatt Hour

BTU → kWh

Kilowatt Hour → BTU

kWh → BTU

All Energy Conversions

Convert Energy Units

Convert from Joule (J)

→ Kilojoule

kJ

→ Calorie

cal

→ Kilocalorie

kcal

→ Watt Hour

Wh

→ Kilowatt Hour

kWh

→ BTU

BTU

Convert from Kilojoule (kJ)

→ Joule

J

→ Calorie

cal

→ Kilocalorie

kcal

→ Watt Hour

Wh

→ Kilowatt Hour

kWh

→ BTU

BTU

Convert from Calorie (cal)

→ Joule

J

→ Kilojoule

kJ

→ Kilocalorie

kcal

→ Watt Hour

Wh

→ Kilowatt Hour

kWh

→ BTU

BTU

Convert from Kilocalorie (kcal)

→ Joule

J

→ Kilojoule

kJ

→ Calorie

cal

→ Watt Hour

Wh

→ Kilowatt Hour

kWh

→ BTU

BTU

Convert from Watt Hour (Wh)

→ Joule

J

→ Kilojoule

kJ

→ Calorie

cal

→ Kilocalorie

kcal

→ Kilowatt Hour

kWh

→ BTU

BTU

Convert from Kilowatt Hour (kWh)

→ Joule

J

→ Kilojoule

kJ

→ Calorie

cal

→ Kilocalorie

kcal

→ Watt Hour

Wh

→ BTU

BTU

Convert from BTU (BTU)

→ Joule

J

→ Kilojoule

kJ

→ Calorie

cal

→ Kilocalorie

kcal

→ Watt Hour

Wh

→ Kilowatt Hour

kWh