ENERGY
Power
Rate of work, heat transfer and machinery output.
Try a decimal, 1e-9, 1/3, or 5 1/2.
ResultW → BtuIT/hConvert watt to British thermal unit per hour
EVERYDAY · ENGINEERING · SCIENCE
Unit conversion. Made clear.
Start with a familiar unit, type a value, and get a dependable answer with sensible precision. Fractions and scientific notation are welcome.
520units ready to convert
HOW IT IS CALCULATED
Convert through watt
Enter a watt value to calculate British thermal unit per hour with full internal precision before display rounding.
Display precisionAuto · 12 significant digits
Auto keeps up to 12 significant digits, trims unnecessary zeroes, and switches to scientific notation for extreme magnitudes.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| milliwattfrom W | mW | Interactive |
| wattfrom W | W | Interactive |
| kilowattfrom W | kW | Interactive |
| megawattfrom W | MW | Interactive |
| gigawattfrom W | GW | Interactive |
| mechanical horsepowerfrom W | hp | Interactive |
| metric horsepowerfrom W | PS | Interactive |
| electrical horsepowerfrom W | hp(E) | Interactive |
| boiler horsepowerfrom W | hp(S) | Interactive |
| foot pound-force per secondfrom W | ft·lbf/s | Interactive |
| British thermal unit per hourfrom W | BtuIT/h | Interactive |
| ton of refrigerationfrom W | TR | Interactive |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.