From amperes (A)
- Amperes to MilliamperesA → mA
- Amperes to MicroamperesA → µA
- Amperes to KiloamperesA → kA
- Amperes to MegaamperesA → MA
Electric Current conversion family
Electric Current unit conversions
Electric current is an SI base quantity; the ampere (A) is its SI base unit and is defined through the fixed numerical value of the elementary charge.
Five named units
Unit and factor reference
| Unit | Symbol | Factor to base | Relationship | Definition and variant |
|---|---|---|---|---|
| ampere | A | 1 | defined | The ampere is the SI base unit of electric current, defined by fixing the elementary charge in coulombs, where C = A s. The base factor is exactly 1 by the family base-unit choice. |
| milliampere | mA | 0.001 | exact | A milliampere is the SI decimal submultiple formed by applying milli (10^-3) to ampere: 1 mA = 0.001 A. The decimal-prefix relationship is exact. |
| microampere | µA | 0.000001 | exact | A microampere is the SI decimal submultiple formed by applying micro (10^-6) to ampere: 1 µA = 0.000001 A. The decimal-prefix relationship is exact. |
| kiloampere | kA | 1000 | exact | A kiloampere is the SI decimal multiple formed by applying kilo (10^3) to ampere: 1 kA = 1000 A. The decimal-prefix relationship is exact. |
| megaampere | MA | 1000000 | exact | A megaampere is the SI decimal multiple formed by applying mega (10^6) to ampere: 1 MA = 1000000 A. The decimal-prefix relationship is exact. |
Every ordered pair
All 20 electric current calculators
From milliamperes (mA)
- Milliamperes to AmperesmA → A
- Milliamperes to MicroamperesmA → µA
- Milliamperes to KiloamperesmA → kA
- Milliamperes to MegaamperesmA → MA
From microamperes (µA)
- Microamperes to AmperesµA → A
- Microamperes to MilliamperesµA → mA
- Microamperes to KiloamperesµA → kA
- Microamperes to MegaamperesµA → MA
From kiloamperes (kA)
- Kiloamperes to AmpereskA → A
- Kiloamperes to MilliampereskA → mA
- Kiloamperes to MicroampereskA → µA
- Kiloamperes to MegaampereskA → MA
From megaamperes (MA)
- Megaamperes to AmperesMA → A
- Megaamperes to MilliamperesMA → mA
- Megaamperes to MicroamperesMA → µA
- Megaamperes to KiloamperesMA → kA
Evidence and review status
This family is machine-reviewed-pending-human. Automated checks verify structure, factor parity and source references; they do not constitute human or specialist approval.
Family assumptions and limits
- Signed values preserve a chosen reference direction: a negative current means flow opposite the selected positive direction, not a different unit.
- This family performs unit scaling only; it does not distinguish direct current, alternating-current RMS, peak, peak-to-peak, or phasor values.
- Charge transferred over time and current density require additional quantities and are outside this family.
- A conversion does not add significant figures to the source measurement.
Authoritative references
- The International System of Units (SI), 9th edition, version 4.01; Bureau International des Poids et Mesures; Cover (V4.01, June 2026); section 2.3.1, The ampere on p. 128 defines A as the SI unit of electric current through the fixed elementary charge; chapter 3, Table 7 on p. 138 defines milli, micro, kilo, and mega.; accessed 2026-08-07