Authoritative definitions of the International System of Units and SI prefixes.
Dedicated unit pair
BTU per hour to Metric horsepower
Convert BTU/h to PS instantly, then review the formula, assumptions, and rounding guidance.
Energy, work, heat & powerInstant result
Decimals
Formula result = input × 0.293071070172 ÷ 735.49875. 1 BTU/h = 0.0004 PS
Common examples
One value, several units
Watts0.2931 W
Kilowatts0.0003 kW
Megawatts0 MW
Mechanical horsepower0.0004 hp
Metric horsepower0.0004 PS
Conversion table
| BTU/h | PS |
|---|---|
| 1 BTU/h | 0.0004 PS |
| 2 BTU/h | 0.0008 PS |
| 5 BTU/h | 0.002 PS |
| 10 BTU/h | 0.004 PS |
| 25 BTU/h | 0.01 PS |
| 50 BTU/h | 0.0199 PS |
| 100 BTU/h | 0.0398 PS |
Conversion chart
1 BTU/h0.0004 PS
5 BTU/h0.002 PS
10 BTU/h0.004 PS
25 BTU/h0.01 PS
50 BTU/h0.0199 PS
Worked example
1 mechanical horsepower is approximately 745.7 watts.
Unit definition
BTU per hour (BTU/h) One btu per hour equals 0.293071070172 watt.
Unit history
BTU per hour is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert BTU/h to watt.
3. Convert the base value to PS and apply your display precision.
Understand the result before using it
BTU per hour to Metric horsepower converts a value measured in BTU per hour (BTU/h) into the equivalent value in Metric horsepower (PS). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 0.293071070172 ÷ 735.49875
Assumptions
- BTU per hour and Metric horsepower represent the same power quantity.
- The input is expressed in BTU/h; the output is expressed in PS.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 BTU/h = 0.000398465762412 PS. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a BTU/h measurement in a document that expects PS.
- Compare a btu per hour value with a value reported in metric horsepower.
- Check the BTU/h-to-PS arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Do not confuse BTU/h with another unit that has a similar name or symbol.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert BTU per hour to Metric horsepower?
result = input × 0.293071070172 ÷ 735.49875 Using the displayed relationship, 1 BTU/h equals 0.000398465762412 PS.
How many Metric horsepower are in one BTU per hour?
One BTU per hour is 0.000398465762412 Metric horsepower. The displayed digits may be rounded.
Can I reverse the BTU/h to PS conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts PS back to BTU/h.
Is the BTU per hour to Metric horsepower result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.