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Electric Current Calculator

Find the current in a wire from the charge that flows and the time it takes, or work out the charge or time instead for the same wire.

I = Q ÷ t

Current is the rate at which charge flows past a point, so more charge per second means a larger current.

Charge (C)

Time (s)

Current (A)

Current

— A

The calculation runs entirely in your browser — no data leaves your device. Change any number and the answer updates instantly.