# Amps to Watts Calculator

**amps to watts**for both alternating current (AC) and direct current (DC) flows.

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**On this page:**

## Amps to watts formula

The formula for converting amps to watts is:

Watts = Amps × Volts

## How to convert amps to watts

The **Watt’s Law formula** is all that’s needed for this conversion. The wattage (power produced) is calculated by multiplying the
amps (current) by the voltage...

To convert amps (electrical current) to watts (electrical power) at a fixed voltage, you can use the equation:
**watts = amps × volts**. Simply multiply your amps figure by the voltage.

### Example calculations

**15 amps**× 120 volts = 1800 watts**20 amps**× 120 volts = 2400 watts

## Amps to watts at 120V (AC)

Amps: | Watts (at 120V): |
---|---|

1 amp | 120 watts |

2 amps | 240 watts |

3 amps | 360 watts |

4 amps | 480 watts |

5 amps | 600 watts |

6 amps | 720 watts |

7 amps | 840 watts |

8 amps | 960 watts |

9 amps | 1080 watts |

10 amps | 1200 watts |

11 amps | 1320 watts |

12 amps | 1440 watts |

13 amps | 1560 watts |

14 amps | 1680 watts |

15 amps | 1800 watts |

16 amps | 1920 watts |

17 amps | 2040 watts |

18 amps | 2160 watts |

19 amps | 2280 watts |

20 amps | 2400 watts |

30 amps | 3600 watts |

40 amps | 4800 watts |

50 amps | 6000 watts |

60 amps | 7200 watts |

70 amps | 8400 watts |

80 amps | 9600 watts |

90 amps | 10800 watts |

100 amps | 12000 watts |

Note: conversions are a guide only. |

## Amps to watts at 12V (DC)

Amps: | Watts (at 12V): |
---|---|

1 amp | 12 watts |

2 amps | 24 watts |

3 amps | 36 watts |

4 amps | 48 watts |

5 amps | 60 watts |

6 amps | 72 watts |

7 amps | 84 watts |

8 amps | 96 watts |

9 amps | 108 watts |

10 amps | 120 watts |

11 amps | 132 watts |

12 amps | 144 watts |

13 amps | 156 watts |

14 amps | 168 watts |

15 amps | 180 watts |

16 amps | 192 watts |

17 amps | 204 watts |

18 amps | 216 watts |

19 amps | 228 watts |

20 amps | 240 watts |

30 amps | 360 watts |

40 amps | 480 watts |

50 amps | 600 watts |

60 amps | 720 watts |

70 amps | 840 watts |

80 amps | 960 watts |

90 amps | 1080 watts |

100 amps | 1200 watts |

Note: conversions are a guide only. |

## Amps to watts conversion example

Let's go through an example conversion for amps to watts...

### Example question

**Question: 5 amps are being sent at 120 volts. What’s the wattage?**

- Power = Current × Voltage
- Power = 5A × 120V
- Power = 600W

As you can see, converting amps to watts is a fairly straightforward process. If you need a little help with checking your calculation, you can use our amps to watts calculator at the top of this page.

Calculator by Alastair Hazell Last updated: July 31, 2023This page has been reviewed by Derek Bulled, Director of CDS Electrical and an approved electrician with over 30 years of experience.

### References

- What is Watt’s law?, EngineeringClicks.
- How Much Electrical Power Do You Need?, Mississippi State University.
- Unit 4: Energy Through Our Lives-Part II, University of Wisconsin - Stevens Point.

If you have any problems using our amps and watts converter, please contact us.