Convert British Thermal Units to Kilowatt-Hours
Convert British Thermal Units (BTU) to Kilowatt-Hours (kWh) instantly and accurately.
Conversion Formula
kWh = BTU × 0.0002930710702
About British Thermal Units
A British Thermal Unit (BTU) - the heat to raise 1 lb of water by 1°F - equals exactly 1,055.05585262 J. It dominates US HVAC: room air conditioners are rated in BTU/h (5,000-24,000 BTU/h = 1.5-7.0 kW); one ton of refrigeration is exactly 12,000 BTU/h. Natural gas is billed in therms (100,000 BTU) in the US. Higher heating values: natural gas ~1,020-1,050 BTU/ft³; No. 2 fuel oil ~138,700 BTU/US gal; propane ~91,500 BTU/US gal. 1 BTU = 1,055.06 J = 252.164 cal = 0.29307 Wh.
About Kilowatt-Hours
A kilowatt-hour (kWh) is the energy consumed by 1 kW for one hour - exactly 3,600,000 J = 3.6 MJ. All domestic electricity meters bill in kWh. Appliance benchmarks: fridge 180-250 kWh/year; washing machine 0.5-2.0 kWh/cycle; air conditioner 1-3 kWh/h. EVs consume 13-25 kWh/100 km; the Lucid Air achieves ~15.9 kWh/100 km (WLTP). Producing 1 tonne of primary aluminium requires ~13,000-15,000 kWh. Global electricity generation is ~29,165 TWh ≈ 2.9 × 10¹³ kWh/year. 1 kWh = 3.6 MJ = 3,412.1 BTU = 859.85 kcal.
Quick Reference Table
| British Thermal Units (BTU) | Kilowatt-Hours (kWh) |
|---|---|
| 1 BTU | 0.000293071 kWh |
| 2 BTU | 0.000586142 kWh |
| 5 BTU | 0.00146536 kWh |
| 10 BTU | 0.00293071 kWh |
| 25 BTU | 0.00732678 kWh |
| 50 BTU | 0.0146536 kWh |
| 100 BTU | 0.0293071 kWh |