Energy Converter
Convert energy between btu (it), kilowatt-hours, joules, therms (us).
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What this tool does
Convert energy between btu (it), kilowatt-hours, joules, therms (us). Uses the international-table BTU. One kWh is exactly 3.6 million joules. A US therm is 100,000 BTU (IT), the natural-gas billing unit.
How to use the Energy Converter
- Enter or select value.
- Enter or select from unit.
- Enter or select to unit.
- Read the calculated result; change any measurement to compare alternatives.
Formula
result = value × from.factor / to.factor; factors: btu=1055.05585262; kwh=3600000; joules=1; therms=105480400
- value
- Value
- from
- From unit
- to
- To unit
Uses the international-table BTU. One kWh is exactly 3.6 million joules. A US therm is 100,000 BTU (IT), the natural-gas billing unit.
Worked example
For energy converter, the following measurements illustrate the exact method: Value: 1; From unit: btu; To unit: kwh.
Inputs
- Value1
- From unitBTU (IT)
- To unitKilowatt-hours
Result
- Converted Kilowatt-hours0
Energy conversion factors
| Unit | Factor to common base |
|---|---|
| BTU (IT) | 1055.05585262 |
| Kilowatt-hours | 3600000 |
| Joules | 1 |
| Therms (US) | 105480400 |
Results explained
- Converted Kilowatt-hours
- Converted Kilowatt-hours from the formula above. Uses the international-table BTU. One kWh is exactly 3.6 million joules. A US therm is 100,000 BTU (IT), the natural-gas billing unit.
Frequently asked questions
Select the source and target units. The Swap control exchanges them, retaining the equivalent converted value.
Uses the international-table BTU. One kWh is exactly 3.6 million joules. A US therm is 100,000 BTU (IT), the natural-gas billing unit. The formula and reference table list all supported definitions.
Only units of the same physical quantity are convertible. The selected group's definitions are fixed and do not depend on location.
The formulas use JavaScript double precision. Display rounding can hide trailing digits, but factors are not rounded before computation.
Yes. A zero amount converts to zero in every unit in this group.