Electric Current Converter
ScienceConvert electric current between amperes, milliamps, microamps, and kiloamps instantly — used for electronics, circuit design, and electrical safety work.
From
To
All conversionsfor 1 Milliamperes (mA)
| Kiloamperes (kA) | 0.000001 |
| Amperes (A) | 0.001 |
| Milliamperes (mA) | 1 |
| Microamperes (µA) | 1000 |
| Nanoamperes (nA) | 1000000 |
| Abampere (CGS) | 0.0001 |
| Statampere (CGS) | 2997601.9 |
What is a Electric Current?
The Electric Current Converter converts electric current between amperes and its common sub-units — milliamperes, microamperes, nanoamperes, and kiloamperes — plus the CGS units abampere and statampere. Electric current spans an enormous practical range: household wiring carries whole amps, small electronics draw milliamps, and sensor leakage current is measured in nanoamps, so moving between these scales accurately matters for both everyday electronics work and engineering calculations.
Enter a value in any supported unit and the converter calculates the equivalent instantly. For related electrical quantities, see the Electric Potential Converter for voltage and the Electric Resistance Converter for resistance.
How to use this Electric Current calculator
- Choose your starting unit from the source dropdown — for example, "Milliamperes (mA)".
- Enter the numeric value you want to convert in the input field.
- Choose your target unit from the destination dropdown — for example, "Amperes (A)".
- Read the converted result, which updates instantly as you type or change units.
- Use the swap (⇅) button if you need to reverse the conversion direction.
- Use the copy button to grab the result for a datasheet comparison, lab report, or circuit calculation.
Formula & Methodology
The converter's base unit is the ampere (A). Every supported unit has a fixed multiplier to amperes: - 1 kiloampere (kA) = 1,000 A - 1 milliampere (mA) = 0.001 A - 1 microampere (µA) = 0.000001 A - 1 nanoampere (nA) = 0.000000001 A - 1 abampere (CGS) = 10 A - 1 statampere (CGS) ≈ 3.336 × 10⁻¹⁰ A Any conversion follows: Result = Input × (toBase of source unit ÷ toBase of target unit) Worked example — converting 250 mA to amperes: Result = 250 × (0.001 ÷ 1) = 0.25 A This confirms that a device rated for 250 mA draws a quarter of an amp — a useful sanity check when comparing against a power supply's amp rating.
Frequently Asked Questions
Divide the milliamp value by 1,000, since one amp equals 1,000 milliamps. Enter your value with 'Milliamperes (mA)' as the source unit and 'Amperes (A)' as the target and the converter applies this automatically.
An ampere (A) is the SI base unit of electric current, while a milliampere (mA) is one-thousandth of an ampere — most small electronics, sensors, and battery-powered devices draw current in the milliamp or microamp range rather than whole amps.
Household circuits carry enough current to power multiple high-draw appliances at once, putting typical loads in the range of several to tens of amps, while a small electronic sensor or LED might draw only a few milliamps or microamps — the unit scale naturally matches the typical current magnitude in each context.
Microamps (µA) are used for extremely low-current measurements — sensor leakage current, battery self-discharge rate, or the standby current of low-power electronics — where even a milliamp would be too coarse a unit to usefully measure.
Divide the amp value by 1,000, since one kiloamp equals 1,000 amps. Kiloamps are used mainly in heavy industrial and power transmission contexts, such as large electrical fault current ratings.
The abampere is the CGS (centimetre-gram-second) electromagnetic unit of current, equal to 10 amperes — it's included for physics and engineering contexts that still reference CGS units. See the [CGS to SI Units Converter](/cgs-si-converter/) for more CGS-to-SI conversions.
Current, voltage, and resistance are related by Ohm's Law (I = V ÷ R) — if you know two of the three values, you can calculate the third. Use the [Ohm's Law Calculator](/ohms-law-calculator/) alongside this converter when working through a circuit calculation.
Yes — if your multimeter displays a reading in mA or µA and you need it in amps (or vice versa) for a datasheet comparison or calculation, this converter handles that instantly.
No — current (amperes) measures the rate of charge flow per second, while charge (coulombs) measures a fixed quantity of electric charge. One ampere equals one coulomb of charge flowing per second; see the [Electric Charge Converter](/electric-charge-converter/) for charge unit conversions specifically.
For nanoamp and microamp-scale measurements common in sensor and leakage-current work, keep several significant figures in your conversion, since these small values are often compared against similarly small threshold specifications where rounding can matter.
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