About the Electric Charge Calculator
Charge from current and time (Q = It), in coulombs, with the number of electrons.
Also known as: coulombs calculator, q = it, charge formula, electrons calculator.
How to use this calculator
- Enter current, time.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
Q = I × t
Worked example
Using the values pre-filled in the calculator above:
- Current = 2 A
- Time = 60 s
the calculator returns:
- Charge: 120 C
- Milliampere-hours: 33.333
- Number of electrons: 7.489811 × 10^20