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Calcimator

Amps / Watts / Volts Converter

Convert between amps, watts, and volts. Enter any two values to calculate the third, plus energy cost estimates.

Inputs

W
A
V
hrs/day
$/kWh

Results

Watts

1,500 W

Amps12.5 A
Volts120 V
Daily kWh12 kWh
Monthly Cost$46.80
Annual Cost$569.40
How to Use This Calculator
  1. Enter any two of the three values — Watts, Amps, or Volts — to calculate the third.
  2. Input Daily Usage (hours) to compute daily kilowatt-hours (kWh).
  3. Enter your Electricity Rate ($/kWh) to see the daily and annual operating cost.
  4. Review the calculated Watts and Amps alongside the cost estimates.
  5. Use this to size extension cords, check outlet capacity, or estimate appliance running costs.
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