Current from power calculator
Calculate current for a known power and voltage.
01
Your measurements
Enter your project values. Your estimate updates as you type.
View your estimateExample values are a starting point. Check product yields and specifications before ordering.
YOUR ESTIMATE
Current
10A
Calculated from your measurements.
How it's calculated
Current (A) = power (W) ÷ voltage (V).
Calculations use consistent units for your selected measurements. Whole purchase quantities are rounded up.
What this estimate includes
Uses I = P ÷ V for DC or a single-phase resistive load. Does not select cable sizes or protective devices.
Quantity and arithmetic estimates only. Use project specifications for installation and design requirements.
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