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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$46.8
Annual Cost$569.4

Watts

1,500 W

How to Use This Calculator
  1. Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
  2. Watts — Power in watts. Leave at 0 to calculate from amps and volts. Accepts values from 0 W to 100,000 W (default: 1,500 W).
  3. Amps — Current in amps. Leave at 0 to calculate from watts and volts. Accepts values from 0 A to 500 A (default: 0 A).
  4. Volts — Voltage of the circuit (120V standard, 240V heavy appliances). Accepts values from 1 V to 480 V (default: 120 V).
  5. Daily Usage — Average hours per day the device runs. Accepts values from 0.1 hrs/day to 24 hrs/day (default: 8 hrs/day).
  6. Electricity Rate — Local electricity cost per kilowatt-hour. Accepts values from 0.01 $/kWh to 1 $/kWh (default: 0.13 $/kWh).
  7. Once all inputs are set, review your results in the Results panel. Here's what each output means:
  8. Watts — shown as a numeric value. This is the primary result of this calculator.
  9. Amps — shown as a numeric value.
  10. Volts — shown as a numeric value.
  11. Daily kWh — shown as a numeric value.
  12. Monthly Cost — shown as a dollar amount.
  13. Annual Cost — shown as a dollar amount.
  14. Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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