Authoritative definitions of the International System of Units and SI prefixes.
Dedicated unit pair
Mechanical horsepower to Megawatts
Convert hp to MW instantly, then review the formula, assumptions, and rounding guidance.
Energy, work, heat & powerInstant result
Decimals
Formula result = input × 745.699871582 ÷ 1000000. 1 hp = 0.0007 MW
Common examples
One value, several units
Watts745.6999 W
Kilowatts0.7457 kW
Megawatts0.0007 MW
Metric horsepower1.0139 PS
BTU per hour2,544.4336 BTU/h
Conversion table
| hp | MW |
|---|---|
| 1 hp | 0.0007 MW |
| 2 hp | 0.0015 MW |
| 5 hp | 0.0037 MW |
| 10 hp | 0.0075 MW |
| 25 hp | 0.0186 MW |
| 50 hp | 0.0373 MW |
| 100 hp | 0.0746 MW |
Conversion chart
1 hp0.0007 MW
5 hp0.0037 MW
10 hp0.0075 MW
25 hp0.0186 MW
50 hp0.0373 MW
Worked example
1 mechanical horsepower is approximately 745.7 watts.
Unit definition
Mechanical horsepower (hp) One mechanical horsepower equals 745.699871582 watt.
Unit history
Mechanical horsepower 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 hp to watt.
3. Convert the base value to MW and apply your display precision.
Understand the result before using it
Mechanical horsepower to Megawatts converts a value measured in Mechanical horsepower (hp) into the equivalent value in Megawatts (MW). 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 × 745.699871582 ÷ 1000000
Assumptions
- Mechanical horsepower and Megawatts represent the same power quantity.
- The input is expressed in hp; the output is expressed in MW.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 hp = 0.000745699871582 MW. 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 hp measurement in a document that expects MW.
- Compare a mechanical horsepower value with a value reported in megawatts.
- Check the hp-to-MW arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Do not confuse hp 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 Mechanical horsepower to Megawatts?
result = input × 745.699871582 ÷ 1000000 Using the displayed relationship, 1 hp equals 0.000745699871582 MW.
How many Megawatts are in one Mechanical horsepower?
One Mechanical horsepower is 0.000745699871582 Megawatts. The displayed digits may be rounded.
Can I reverse the hp to MW conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts MW back to hp.
Is the Mechanical horsepower to Megawatts 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.