Enter a current value and select its unit. Formula: Amps = Value × Unit Factor, then each target unit = Amps ÷ Target Factor.
Results are for reference and estimation only. Verify all values before use in any electrical design or measurement work. See full disclaimer below.
Common real-world current values, mapped to milliamps and kiloamps, with a typical application for each. Use this to sanity-check a calculated result at a glance.
| Amps | Milliamps | Kiloamps | Typical Application |
|---|---|---|---|
| 0.001 | 1 | 0.000001 | LED indicator draw |
| 0.5 | 500 | 0.0005 | USB phone charging |
| 2.5 | 2,500 | 0.0025 | LED light bulb (120V) |
| 8 | 8,000 | 0.008 | Laptop charger |
| 15 | 15,000 | 0.015 | Standard US household circuit breaker |
| 20 | 20,000 | 0.02 | Kitchen appliance circuit breaker |
| 30 | 30,000 | 0.03 | Electric dryer / EV Level 1 charging |
| 50 | 50,000 | 0.05 | Electric range / sub-panel feed |
| 100 | 100,000 | 0.1 | Small residential main panel |
| 200 | 200,000 | 0.2 | Standard US residential main panel |
| 400 | 400,000 | 0.4 | Large residential / light commercial service |
| 1,200 | 1,200,000 | 1.2 | Commercial / industrial service entrance |
Three real-world conversion scenarios, worked step by step. Click "Load This Example" to run it in the calculator above.
A deeper look at where each current unit on this page comes from — the SI-prefixed units used in everyday electrical work, and the legacy CGS units still found in physics literature and older instrumentation.
SI-Prefixed Units (Nanoamperes through Megaamperes)
Amperes, Milliamperes, Microamperes, Nanoamperes, Centiamperes, Deciamperes, Kiloamperes, and Megaamperes are all the same underlying unit — the ampere — scaled by a power of ten. This is the International System of Units (SI) convention, and it's what nearly all modern meters, datasheets, and nameplates use. Because every SI conversion is an exact power of ten, there is no rounding error going between any two of these units.
Statampere (≈ 3.335641 × 10⁻¹⁰ A)
The statampere is the unit of electric current in the electrostatic (Gaussian/CGS) system, still used in some physics and electromagnetics literature. Its value in amperes is tied to the exact value of the speed of light constant, which is why different sources may round the statampere-to-ampere conversion very slightly differently.
Abampere and Biot (10 A)
The abampere is the unit of electric current in the electromagnetic (EMU/CGS) system. The biot is simply a later name for the exact same unit, adopted in some physics literature to honor Jean-Baptiste Biot. Both are defined as an exact power of ten relative to the ampere — 1 abA = 1 Bi = 10 A — so their conversions are always precise, with no rounding involved. They appear mainly in older laboratory instrumentation and legacy physics references.
| Unit | Symbol | Value in Amps | Common Use |
|---|---|---|---|
| Nanoampere | nA | 1 × 10⁻⁹ | Photodiode / sensor leakage current |
| Microampere | µA | 1 × 10⁻⁶ | Standby / sleep-mode device draw |
| Milliampere | mA | 1 × 10⁻³ | LED and small-signal electronics |
| Centiampere | cA | 1 × 10⁻² | Rarely used outside academic exercises |
| Deciampere | dA | 1 × 10⁻¹ | Rarely used outside academic exercises |
| Ampere | A | 1 | SI base unit — breakers, meters, general use |
| Kiloampere | kA | 1 × 10³ | Fault current / short-circuit ratings |
| Megaampere | MA | 1 × 10⁶ | Lightning strikes, fusion / plasma research |
| Statampere | statA | ≈ 3.335641 × 10⁻¹⁰ | Physics / electrostatics (CGS-ESU) |
| Abampere | abA | 1 × 10¹ | Legacy lab instrumentation (CGS-EMU) |
| Biot | Bi | 1 × 10¹ | Same unit as abampere, alternate name (CGS-EMU) |
This guide is provided for educational and reference purposes. Always confirm measured current values against a properly calibrated meter or instrument before relying on them for any electrical work.