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Watts to HP Converter

Convert Watts to HP instantly: 1 watt = 0.00134102209 horsepower. Free watts to hp converter with formula, chart and examples.

1 watt = 0.00134102209 horsepower

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UnitSymbolValue

Quick answer

To convert watts to horsepower, multiply the number of watts by 0.00134102. For example, 100 watts = 0.134102 horsepower.

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

How to Convert Watts to HP

The formula is horsepower = watts × 0.00134102209. 1 watt = 0.00134102209 horsepower. 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 watt to horsepower conversions, but you can switch either list to any of the 76 units in the Power Converter, or go the other way with the HP to Watts converter.

Watts to HP conversion chart

WattsHP
0.1 W0.00013410221 hp
0.25 W0.00033525552 hp
0.5 W0.00067051104 hp
1 W0.0013410221 hp
2 W0.0026820442 hp
3 W0.0040230663 hp
4 W0.0053640884 hp
5 W0.0067051104 hp
6 W0.0080461325 hp
7 W0.0093871546 hp
8 W0.010728177 hp
9 W0.012069199 hp
10 W0.013410221 hp
11 W0.014751243 hp
12 W0.016092265 hp
13 W0.017433287 hp
14 W0.018774309 hp
15 W0.020115331 hp
16 W0.021456353 hp
17 W0.022797376 hp
18 W0.024138398 hp
19 W0.02547942 hp
20 W0.026820442 hp
25 W0.033525552 hp
30 W0.040230663 hp
40 W0.053640884 hp
50 W0.067051104 hp
60 W0.080461325 hp
70 W0.093871546 hp
75 W0.10057666 hp
80 W0.10728177 hp
90 W0.12069199 hp
100 W0.13410221 hp
150 W0.20115331 hp
200 W0.26820442 hp
250 W0.33525552 hp
500 W0.67051104 hp
746 W1.0004025 hp
1,000 W1.3410221 hp
1,500 W2.0115331 hp

Common Watts to HP conversions

  • 1 watt = 0.00134102209 horsepower
  • 100 W = 0.13410221 hp
  • 500 W = 0.67051104 hp
  • 746 W = 1.0004025 hp
  • 1,000 W = 1.3410221 hp
  • 1,500 W = 2.0115331 hp

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How to Use the Watts to HP 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 horsepower are in a watt?

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

How do I convert Watts to HP?

Use the formula horsepower = watts × 0.00134102209. For example, 1 watt = 0.00134102209 horsepower. Or type the value in the converter above and the answer appears as you type.

What is the Watts to HP formula?

horsepower = watts × 0.00134102209 — the factor is rounded to 10 significant figures, which is far more precise than everyday use needs.

What is 100 watts in horsepower?

100 watts = 0.13410221 horsepower.

What is 500 watts in horsepower?

500 watts = 0.67051104 horsepower.

What is 746 watts in horsepower?

746 watts = 1.0004025 horsepower.

What is 1,000 watts in horsepower?

1,000 watts = 1.3410221 horsepower.

What is 1,500 watts in horsepower?

1,500 watts = 2.0115331 horsepower.

How do I convert HP back to Watts?

Use the swap button in the converter above, or open our HP to Watts converter. watts = horsepower × 745.6998716.

Is this Watts to HP 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 Watts 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 Watts to HP converter free?

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