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HP to Watts Converter

Convert HP to Watts instantly: 1 horsepower = 745.6998716 watts. Free hp to watts converter with formula, chart and examples.

1 horsepower = 745.6998716 watts

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Quick answer

To convert horsepower to watts, multiply the number of horsepower by 745.7. For example, 0.5 horsepower = 372.85 watts.

Last updated · Conversion factors follow the SI definitions in the BIPM SI Brochure and NIST SP 811.

How to Convert HP to Watts

The formula is watts = horsepower × 745.6998716. 1 horsepower = 745.6998716 watts. Type any value in the converter above for an instant answer, or use the chart below for the most common values.

This page is preset for horsepower to watt conversions, but you can switch either list to any of the 76 units in the Power Converter, or go the other way with the Watts to HP converter.

HP to Watts conversion chart

HPWatts
0.1 hp74.569987 W
0.25 hp186.42497 W
0.5 hp372.84994 W
1 hp745.69987 W
2 hp1,491.3997 W
3 hp2,237.0996 W
4 hp2,982.7995 W
5 hp3,728.4994 W
6 hp4,474.1992 W
7 hp5,219.8991 W
8 hp5,965.599 W
9 hp6,711.2988 W
10 hp7,456.9987 W
11 hp8,202.6986 W
12 hp8,948.3985 W
13 hp9,694.0983 W
14 hp10,439.798 W
15 hp11,185.498 W
16 hp11,931.198 W
17 hp12,676.898 W
18 hp13,422.598 W
19 hp14,168.298 W
20 hp14,913.997 W
25 hp18,642.497 W
30 hp22,370.996 W
40 hp29,827.995 W
50 hp37,284.994 W
60 hp44,741.992 W
70 hp52,198.991 W
75 hp55,927.49 W
80 hp59,655.99 W
90 hp67,112.988 W
100 hp74,569.987 W
150 hp111,854.98 W
200 hp149,139.97 W
250 hp186,424.97 W
500 hp372,849.94 W
1,000 hp745,699.87 W

Common HP to Watts conversions

  • 1 horsepower = 745.6998716 watts
  • 0.5 hp = 372.84994 W
  • 1 hp = 745.69987 W
  • 2 hp = 1,491.3997 W
  • 5 hp = 3,728.4994 W
  • 10 hp = 7,456.9987 W

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How to Use the HP to Watts Converter

  1. Type a value in the From box and choose its unit.
  2. Pick the unit you want in the To list — the result updates as you type.
  3. Use the swap button to reverse the conversion, or type in the To box to convert backwards.
  4. Check the All conversions table to see your value in every unit; click a row to make it the target.

Frequently Asked Questions

How many watts are in a horsepower?

There are 745.6998716 watts in 1 horsepower. Going the other way, 1 watt = 0.00134102209 horsepower.

How do I convert HP to Watts?

Use the formula watts = horsepower × 745.6998716. For example, 1 horsepower = 745.6998716 watts. Or type the value in the converter above and the answer appears as you type.

What is the HP to Watts formula?

watts = horsepower × 745.6998716 — the factor is rounded to 10 significant figures, which is far more precise than everyday use needs.

What is 0.5 horsepower in watts?

0.5 horsepower = 372.84994 watts.

What is 1 horsepower in watts?

1 horsepower = 745.69987 watts.

What is 2 horsepower in watts?

2 horsepower = 1,491.3997 watts.

What is 5 horsepower in watts?

5 horsepower = 3,728.4994 watts.

What is 10 horsepower in watts?

10 horsepower = 7,456.9987 watts.

How do I convert Watts back to HP?

Use the swap button in the converter above, or open our Watts to HP converter. horsepower = watts × 0.00134102209.

Is this HP to Watts converter accurate?

Yes. It uses exact unit definitions and double-precision maths, and you can show up to 15 significant digits. The table below is calculated with the same formula.

Can I convert HP to other power units?

Yes — pick any unit in the From and To lists above, or open the full Power Converter, which handles 76 power units.

Is the HP to Watts converter free?

Yes, it is free with no sign-up, and every conversion runs in your browser so nothing is sent to a server.