Free instant BTU → Wh converter. No signup, no uploads — everything is calculated privately in your browser.
1 BTU = 0.293071 watt-hours
1 btu = 0.293071 watt-hours
Free, instant, and 100% private — every calculation runs in your browser. Nothing is uploaded.
1 British thermal unit equals 0.293071 watt-hours. To convert btu to watt-hours, divide the value by 3.412141633127942.
1 British thermal unit = 0.293071 watt-hours. Formula: value ÷ 3.412141633127942
Example: 1 BTU → 0.293071 Wh. Type any value in the converter above to see it converted live.
| BTU (BTU) | Watt-hours (Wh) |
|---|---|
| 1 BTU | 0.293071 Wh |
| 2 BTU | 0.586142 Wh |
| 5 BTU | 1.46536 Wh |
| 10 BTU | 2.93071 Wh |
| 25 BTU | 7.32678 Wh |
| 50 BTU | 14.6536 Wh |
| 100 BTU | 29.3071 Wh |
| 250 BTU | 73.2678 Wh |
| 500 BTU | 146.536 Wh |
| 1,000 BTU | 293.071 Wh |
1 British thermal unit = 0.293071 watt-hours. Formula: value ÷ 3.412141633127942. Enter the value above and the result appears instantly — the calculation runs entirely in your browser.
Exactly: 1 British thermal unit = 0.2930710701722222 watt-hours. The reverse factor is 1 watt-hour = 3.412141633127942 btu.
1 BTU = 0.293071 Wh; 10 BTU = 2.93071 Wh; 100 BTU = 29.3071 Wh. Use the full conversion table below for more reference values.
No — and the capital letter matters. A food Calorie (with a capital C) is a kilocalorie: 1,000 small calories. This converter treats them correctly: 1 kcal = 4.184 kJ = 1,000 cal. Energy labels on food almost always mean kilocalories, even where the label just says "calories".