Watts to Horsepower conversion
Convert watts (W) to horsepower (hp). Mechanical: hp = W ÷ 745.699872. Also electrical and metric hp, examples, and chart. Runs locally in your browser.
Enter values to convert.
Formulas
Core equations used by this converter.
How to use
Choose W → hp or hp → W
Use the tabs to switch direction. Forward mode needs watts; 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 W
1 W
10 W
10 W
50 W
50 W
100 W
100 W
Watts to Horsepower conversion specification
Version 1.1.0 · Engine tested
- Engine tested 4 published cases
- Named expert review Not performed
- Calculation version 1.1.0
- Definition
- Watts (W) converts to hp using a fixed linear factor. Convert watts (W) to horsepower (hp). Mechanical: hp = W ÷ 745.699872. Also electrical and metric hp, examples, and chart.
- What it calculates
- Value between W and hp. Switch direction with the converter tabs.
- Inputs
- Watts (W) or reverse unit (hp)
- Outputs
- Converted value in hp or W
- Formula
hp = W × 1/745.699872 · 1 W = 1/745.699872 hp- Watts to horsepower conversion table
Watts (W) hp (mechanical) hp (electrical) hp (metric) 100 0.1341 0.1340 0.1360 500 0.6705 0.6702 0.6798 745.7 ≈1.000 0.9996 1.0139 1,000 1.3410 1.3405 1.3596 1,500 2.0120 2.0107 2.0394 5,000 6.7051 6.7024 6.7981 10,000 13.410 13.405 13.596 74,570 ≈100 99.96 101.39 - Assumptions
- Conversion runs locally in the browser; values are not uploaded.
- Uses the standard factor/definition for these units.
- Units
- W → hp
- hp → W
- Boundary conditions
- Empty or non-numeric input yields no valid result.
- Non-negative values are expected for physical quantities.
- Example
- 1 W → 0.00134102 hp
- Validation cases
- 1 W → 0.0013410221 hp
- 10 W → 0.013410221 hp
- 50 W → 0.067051104 hp
- 100 W → 0.13410221 hp
- 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 Watts to Horsepower conversion update locally in your browser.
Related tools
Frequently asked questions
Key distinctions behind the conversion.
How do you convert using Watts to Horsepower conversion?
Use 1 W = 0.0013410220888438076 hp. Example: 746 W to hp → 1 hp (electrical).
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.