Energy Unit Converter
Convert energy values between kilowatt-hours, joules, kilojoules, calories and British thermal units (BTU).
Your results
Calculation breakdown
- Conversion
- Result = value × (from unit's joules) ÷ (to unit's joules)
Worked example
1 kilowatt-hour of electricity equals approximately 3,600 kilojoules of energy.
Assumptions
- 'Calories' here refers to food kilocalories (kcal), matching common everyday usage.
How this calculator works
This calculator converts an energy value between kilowatt-hours, joules, kilojoules, calories and British thermal units (BTU). Kilowatt-hours are the standard unit on Australian electricity bills, kilojoules appear on Australian food labels, and BTU is common for imported heating and cooling appliance specifications.
Frequently asked questions
What unit does my Australian electricity bill use?
Australian electricity bills measure usage in kilowatt-hours (kWh), the amount of energy used at a rate of one kilowatt for one hour.
Do Australian food labels use calories or kilojoules?
Australian food labels are required to show energy in kilojoules, though calories are still commonly understood and quoted informally.
What is a BTU used for?
British Thermal Units are often used to rate the heating or cooling capacity of imported air conditioners and heaters.