Energy Conversion Calculator
Convert between energy units — kWh, MWh, GJ, MBtu, and toe. The universal translator for energy data.
Free · No signup · By the analysts at Blackridge Research · Updated 2026-07-18
Inputs
Results
What this means
Adjust the inputs to calculate.
About the Energy Conversion Calculator
Energy conversion is essential for comparing energy sources and technologies.
This calculator converts between all common energy units.
Formula
Output = Input × Conversion Factor
- E
- — Energy Value
- CF
- — Conversion Factor
How to use this calculator
- 1
Enter energy value
The energy value to convert.
- 2
Select input unit
The unit of the input value.
- 3
Select output unit
The desired output unit.
Example calculations
Energy unit conversion
Convert 10,000 kWh to MWh and GJ.
10,000 kWh = 10 MWh = 36 GJ.
- In kWh:
- 10,000
- In MWh:
- 10.0
- In GJ:
- 36.0
- In MBtu:
- 34.1
10,000 kWh equals 10 MWh, 36 GJ, and 34.1 MBtu.
Interpreting your results
Different industries use different energy units. Conversion is essential for comparison.
Use consistent units when comparing energy sources and technologies.
Need the market data behind this calculator?
The Energy Conversion Calculator is only as good as its inputs. Blackridge Research publishes syndicated market reports with vetted market sizes, growth rates, and competitive landscapes across 40+ industries — and builds custom studies when the shelf report doesn't exist.
Industry applications
Business
- Energy reporting: convert between units for reporting.
- Benchmarking: compare energy performance.
- Regulatory compliance: report in required units.
Construction
- Building energy: convert building energy use data.
- Equipment specifications: compare equipment energy consumption.
Research
- Energy analysis: convert units for analysis.
- Data harmonization: standardize energy data.
Common mistakes to avoid
-
✗ Using wrong conversion factors
Always double-check conversion factors.
-
✗ Confusing watts and watt-hours
Watts are power, watt-hours are energy.
Frequently asked questions
›What is the difference between a watt and a watt-hour?
A watt is power (instantaneous). A watt-hour is energy (power × time).
›Why are there so many energy units?
Different industries and regions use different units historically.
Glossary
- kWh:
- Kilowatt-hour — 1,000 watt-hours of energy.
- MWh:
- Megawatt-hour — 1,000 kilowatt-hours of energy.
- GJ:
- Gigajoule — 1 billion joules of energy.
- MBtu:
- Thousand British thermal units — a unit of energy.
- toe:
- Ton of oil equivalent — energy content of one tonne of oil.
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