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Enter your value above to convert btu (th)/hour units to watts or vice versa.
Real-World Examples
The Uses of BTU (th)/Hour units to Watts Conversion
BTU (th) per hour is the thermochemical heat-flow unit used in chemistry research, so this conversion is most useful when comparing against an electrical heating figure given in watts.
Reporting Reaction Heat Output in Calorimetry Research
Chemists running calorimetry experiments who track their equipment's electrical power draw in watts convert a reaction's sustained heat output, measured in BTU (th) per hour, into watts to compare the two energy flows.
Comparing Thermochemical Data to Electrical Heating Equivalents
Chemical engineers who size electrical heating elements in watts convert a process's thermochemical heat requirement, specified in BTU (th) per hour, into watts to select appropriately rated equipment.
Checking Older Thermochemistry Literature Against Modern Units
Researchers reading older thermochemistry papers that report heat flow in BTU (th) per hour convert the figure into watts to compare against modern SI-based experimental results.
Quick Reference
Comprehensive Conversion Table
Our quick table gives you instant results, so you don't have to calculate these common values manually.
| Conversion | Formula | Result (W) |
|---|---|---|
| 0.341443 Btu(th)/h to W | 0.341443 × 0.29287507347222225 | 0.10 W |
| 1.70721 Btu(th)/h to W | 1.70721 × 0.29287507347222225 | 0.50 W |
| 3.41443 Btu(th)/h to W | 3.41443 × 0.29287507347222225 | 1.00 W |
| 6.82885 Btu(th)/h to W | 6.82885 × 0.29287507347222225 | 2.00 W |
| 17.0721 Btu(th)/h to W | 17.0721 × 0.29287507347222225 | 5.00 W |
| 34.1443 Btu(th)/h to W | 34.1443 × 0.29287507347222225 | 10.00 W |
| 170.721 Btu(th)/h to W | 170.721 × 0.29287507347222225 | 50.00 W |
| 341.443 Btu(th)/h to W | 341.443 × 0.29287507347222225 | 100.00 W |
| 1,707.21 Btu(th)/h to W | 1,707.21 × 0.29287507347222225 | 500.00 W |
Got Questions?
Frequently Asked Questions
How many watts are in 1 btu (th)/hour?
1 btu (th)/hour equals 0.292875 watts, a figure useful for anyone working at the chemical thermodynamics and calorimetry research scale.
How many btu (th)/hour units are in 1 watt?
1 watt equals approximately 3.41443 btu (th)/hours, which puts the size of a single watt into perspective against the btu (th)/hour.
Why would anyone convert BTU (th) per hour to watts?
This comes up in chemical thermodynamics and calorimetry research, where a reaction's heat output reported in the thermochemical BTU (th) needs to be compared against an electrical power figure in watts.
What's the difference between BTU (th) and BTU (IT)?
BTU (th), the thermochemical British thermal unit (1,054.3502645 joules), is very slightly smaller than BTU (IT), the International Table definition (1,055.05585262 joules) used in most modern engineering work.