1 BTU to watt hours
1 BTU = 0.29307107 Wh. Change the amount below, or read the formula and the reference table further down.
1 BTU equals
watt hours
1 BTU = 0.29307107 Wh
The formula
BTU and watt hours both measure energy from the same zero, so a single multiplier does the job.
Wh = BTU × 0.2930710702
Going the other way? Convert watt hours to BTU.
BTU to watt hours table
Values either side of 1 BTU.
| BTU (BTU) | Watt hours (Wh) |
|---|---|
| -4 | -1.1723 |
| -3.5 | -1.0257 |
| -3 | -0.879213 |
| -2.5 | -0.732678 |
| -2 | -0.586142 |
| -1.5 | -0.439607 |
| -1 | -0.293071 |
| -0.5 | -0.146536 |
| 0 | 0 |
| 0.5 | 0.146536 |
| 1 | 0.293071 |
| 1.5 | 0.439607 |
| 2 | 0.586142 |
| 2.5 | 0.732678 |
| 3 | 0.879213 |
| 3.5 | 1.0257 |
| 4 | 1.1723 |
| 4.5 | 1.3188 |
| 5 | 1.4654 |
| 5.5 | 1.6119 |
| 6 | 1.7584 |
Questions people ask
- How many watt hours are in a BTU?
- One BTU equals 0.2930710702 watt hours.
- How do I convert BTU to watt hours by hand?
- Multiply the number of BTU by 0.2930710702. For a rough check, 0.293 is close enough for most everyday use.
- What is 1 BTU in watt hours?
- 1 BTU is 0.29307107 watt hours.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.