Horsepower to Watts conversion
Horsepower to Watts conversion. Exact conversion factors, worked examples, and privacy-first browser calculation on CalculatorX. Try it free.
Enter values to convert.
Formulas
Core equations used by this converter.
How to use
Choose hp → W or W → hp
Use the tabs to switch direction. Forward mode needs horsepower; reverse uses the opposite unit.
Enter the value
Type a non-negative value in the active unit field.
Convert and read the result
Use Convert or let the result update automatically.
Example conversions
Common values with formula and result.
1 hp
1 hp
10 hp
10 hp
50 hp
50 hp
100 hp
100 hp
Horsepower to Watts conversion specification
Version 1.1.0 · Engine tested
- Engine tested 4 published cases
- Named expert review Not performed
- Calculation version 1.1.0
- Definition
- Horsepower (hp) converts to W using a fixed linear factor. Convert horsepower (hp) to watts (W). Mechanical: 1 hp = 745.699872 W. Also electrical (746 W) and metric (~735.5 W), examples, and chart.
- What it calculates
- Value between hp and W. Switch direction with the converter tabs.
- Inputs
- Horsepower (hp) or reverse unit (W)
- Outputs
- Converted value in W or hp
- Formula
W = hp × 745.699872 · 1 hp = 745.699872 W- Horsepower to watts conversion table
hp W (mechanical) W (electrical) W (metric) 0.1 74.57 74.6 73.55 0.5 372.85 373.0 367.75 1 745.699872 746 735.49875 5 3728.50 3730 3677.49 10 7457.00 7460 7354.99 50 37285.0 37300 36774.9 100 74570.0 74600 73549.9 - Assumptions
- Conversion runs locally in the browser; values are not uploaded.
- Uses the standard factor/definition for these units.
- Units
- hp → W
- W → hp
- Boundary conditions
- Empty or non-numeric input yields no valid result.
- Non-negative values are expected for physical quantities.
- Example
- 1 hp → 745.7 W
- Validation cases
- 1 hp → 745.69987 W
- 10 hp → 7456.9987 W
- 50 hp → 37284.994 W
- 100 hp → 74569.987 W
- Sources
- SI / international unit definitions where applicable
- CalculatorX conversion factors (local runtime)
- Calculation version
- 1.1.0
Background
Interpretation and common distinctions.
Use the converter tabs to switch direction when available. Results for Horsepower to Watts conversion update locally in your browser.
Related tools
Frequently asked questions
Key distinctions behind the conversion.
How do you convert using Horsepower to Watts conversion?
Use 1 hp = 745.699872 W. Example: 1 hp to watts → 745.699872 W ≈ 745.7 W.
Can I switch direction?
Use the converter tabs when available, or open the related reverse tool from Related.
Does this run online or locally?
Calculation runs locally in your browser. Values are not uploaded.
How precise are the results?
Results follow the formulas on this page. Round to the precision your use case needs.