Type a current in any field. Each metric-prefixed unit is scaled to amperes, then converted back out to all other units live.
1 A equals 1000 mA; the metric milli prefix means one-thousandth of the base ampere.
The ampere (A) is the SI base for current in this tool, and every prefix scales from it.
1 µA is 10⁻⁶ A, so one ampere contains one million microamperes — common in low-power sensors.