CalcVind

Watts to Amps Calculator

Convert power to current (and back) for AC and DC

Power and Supply

W

230 V single-phase, 415 V three-phase (line to line) in India

V

1 for heaters and bulbs; about 0.8–0.95 for motors, ACs, pumps

Current

9.66 AAmps
2.222 kVA
Apparent power
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  1. 1
    Choose watts or amps
    Which one you know
  2. 2
    Pick the supply
    Single-phase, three-phase or DC
  3. 3
    See the result
    Current or power

How are watts converted to amps?

Current depends on voltage and, for AC loads with motors or electronics, the power factor.

DC: I = P ÷ V · Single-phase AC: I = P ÷ (V × PF)

Three-phase AC: I = P ÷ (√3 × V_line × PF)

Indian supply voltages

Homes get 230 V single-phase at 50 Hz; three-phase connections are 415 V between phases. Inverter and solar batteries are usually 12, 24 or 48 V DC.

Using it for MCBs

Choose an MCB rated a little above the circuit's working current (about 1.25 times), and check that the wire can carry more than the MCB rating. A 2 kW geyser draws about 8.7 A at 230 V, so it typically goes on a 16 A circuit with 2.5 sq mm or 4 sq mm wire.

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Frequently asked questions

How many amps is 1000 watts?

About 4.35 A at 230 V for a heater (PF 1), or 4.8 A for a motor load with PF 0.9. At 12 V DC it's 83.3 A.

What is power factor?

The ratio of real power (W) to apparent power (VA). Heaters and filament bulbs are 1; motors, ACs and LED drivers are lower, so they draw more current for the same watts.

How many watts can a 16 A socket take?

About 3,680 W at 230 V (16 × 230), though it's wise to stay below about 80% of that for continuous loads.

Last reviewed: October 2026