Physics

hp to Amps Calculator

Find the current draw of a motor from its horsepower.

Calculated Output

Current (A) 8.48

Formula: I = hp·746 ÷ (V·η·PF)

Step-by-Step Breakdown

1. Values used:

2. Power = 2 hp

3. Voltage = 230 V

4. Efficiency = 0.9

5. Power factor = 0.85

7. Current = 8.48A

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The math behind it

I = hp·746 ÷ (V·η·PF), accounting for efficiency and power factor (single-phase).

2 hp at 230 V, η 0.9, PF 0.85 → about 8.5 A.

Why 746?

One mechanical horsepower equals 746 watts.