Science & engineering
Charge from current & time
Translate a constant current and duration into electric charge.
A clear answer. Here’s how.
Electric charge Q = current × time in coulombs. Also expresses charge in ampere-hours using 3,600 seconds per hour. Assumes current stays constant; signed current gives signed charge transfer.
See a worked example
Worked example
A fixed demonstration, separate from the values you enter above.
- Current (A)
- 2
- Duration (seconds)
- 30
Example result
- Transferred charge (C)
- 60
- Charge (Ah)
- 0.0166666666667