Single Phase Current
Use the Single Phase Current. Enter Power (watts) and Voltage (volts) for a clear result, formula explanation, and practical planning checks.
Single Phase Current measurements
Enter your values, then calculate.
Result
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Enter your measurements above to calculate.
CategoryConstruction
Inputs2
CalculationIn browser
How to calculate single phase current
This calculator finds single-phase current from power and voltage.
How the calculation works
Current = Power ÷ Voltage.
Example
1,800 watts at 120V: 1,800÷120 = 15A.
Frequently asked questions
How is Result calculated?
Result = [Power] ÷ [Voltage].
Is the Single Phase Current free to use?
Yes — every calculator on Simple Calculator Tools is free, runs in your browser, and does not require an account.
Quick Insight
Single Phase Current
Current = Power ÷ Voltage.
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Let's understand your single phase current result.
Your personalized explanation
Calculate a result above and this guide will help you interpret it using this calculator's own formula and explanation.
Pro Tips for Single Phase Current
- This assumes a purely resistive, unity-power-factor load — motor or reactive loads need power factor included for an accurate current figure.
- Always verify the calculated current against the circuit's breaker rating with appropriate safety margin, not right at the limit.
Common Single Phase Current Mistakes to Avoid
- Applying this simple formula to a motor or reactive load without accounting for power factor, which would understate true current draw.
When to Use This Calculator
This calculator finds single-phase current from power and voltage.
Content reviewed: August 2026 · Robert Threadgill