# HP to Watt

Convert horsepower to watts with configurable decimal precision

> Canonical page: https://elysiatools.com/en/tools/hp-to-watt

- **Category:** Math & Numbers

- **Keywords:** horsepower, hp, watt, power, conversion

## Overview

Enter horsepower and convert with 1 hp = 745.699871582 W.

## Inputs

- **Horsepower** (number): e.g. 1.5
- **Decimal Precision** (number)

## When to use

- When calculating the electrical power equivalent of mechanical engines or motors.
- When standardizing power specifications in engineering documentation or technical datasheets.
- When you need precise conversions between mechanical horsepower and watts for electrical load calculations.

## How it works

- Enter the horsepower value you want to convert in the input field.
- Set your desired decimal precision between 0 and 10 digits.
- The tool multiplies the horsepower by 745.699871582 and outputs the result in JSON format.

## Use cases

- Converting automotive engine horsepower ratings to kilowatts or watts for electrical vehicle comparisons.
- Sizing electrical generators or backup power supplies based on mechanical pump or motor horsepower ratings.
- Standardizing industrial machinery specifications for international engineering reports.

## Frequently asked questions

### What conversion factor is used to convert HP to Watts?

The tool uses the standard mechanical horsepower conversion factor where 1 hp equals 745.699871582 watts.

### Can I control the decimal precision of the output?

Yes, you can configure the decimal precision from 0 up to 10 decimal places.

### Does this tool support electrical or metric horsepower?

This tool specifically uses the mechanical (imperial) horsepower standard of 745.699871582 watts.

### What is the default decimal precision?

The default precision is set to 4 decimal places if not specified.

### Is there a limit to the horsepower value I can enter?

There is no hard limit; you can input any positive decimal or integer value.

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