Wattage To Amperage Calculator
Use the Wattage To Amperage Calculator for a transparent, instant calculation with validated inputs and cited sources. For a query such as “watts to amps”, enter the matching values and units below and review the stated assumptions.
How to use this calculator
Enter the requested values and units.
Review the assumptions and any warnings shown with the result.
Use the result together with the cited source and your real-world requirements.
Formula
DC current = P/V; single-phase AC current = P/(V × power factor); balanced three-phase current = P/(√3 × line voltage × power factor).
Worked example
Worked example: Inputs: Electrical system: DC or single-phase AC; Real power: 1,200 W; Voltage (line-to-line for three-phase): 120 V; Power factor (use 1 for DC): 1. Outputs: Current: 10 A.
Assumptions and limits
- The result depends on the values, units, and assumptions entered. It does not infer missing context.
Sources
- Schneider Electric: Definition of reactive powerReference material reviewed for the stated method, units, or domain. Confirm that its scope matches your use case. Reviewed 2026-08-14.
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Frequently asked questions
How does the Wattage To Amperage Calculator work?
DC current = P/V; single-phase AC current = P/(V × power factor); balanced three-phase current = P/(√3 × line voltage × power factor).
What should I enter?
Electrical system, Real power, Voltage (line-to-line for three-phase), Power factor (use 1 for DC)
What should I verify?
Review the assumptions and any warnings shown with the result. The result depends on the values, units, and assumptions entered. It does not infer missing context.
Last updated 2026-08-14 · real-power-current-by-system-v2 · opportunity-content-2026-08-14 · Trusty Calculator Editorial Team