Milliampere-Turns to Ampere-Turns Converter (mAt to At)
Milliampere-Turns to Ampere-Turns Converter (mAt to At)
Convert Milliampere-turns to Ampere-turns (mAt to At) with ConverterHub’s precision calculator. Seamlessly translate sensor coil measurements and small-signal transformer specifications into standard SI ampere-turns for magnetic circuit modeling and finite element simulations.
Formula & Calculation: Milliampere-Turns to Ampere-Turns
Because one milliampere-turn (mAt) represents one thousandth (10⁻³) of an ampere-turn, convert from milliampere-turns to ampere-turns by dividing by 1,000:
At = mAt ÷ 1,000
Or multiply by 0.001:
At = mAt × 0.001
Example Calculation: A high-permeability ferrite pot core inductor has 150 turns carrying an RMS signal current of 4 milliamperes (mA). The resulting magnetomotive force is 150 turns × 4 mA = 600 mAt. Converting to standard ampere-turns:
At = 600 mAt ÷ 1,000 = 0.6 At
Milliampere-Turns to Ampere-Turns Reference Table
| Milliampere-Turns (mAt) | Ampere-Turns (At) | Application Benchmark |
|---|---|---|
| 10 mAt | 0.01 At | High-frequency RF tuned circuit coil |
| 50 mAt | 0.05 At | Audio preamplifier input stage transformer |
| 100 mAt | 0.1 At | Fluxgate magnetometer sense winding |
| 250 mAt | 0.25 At | Telecom data line common-mode choke |
| 500 mAt | 0.5 At | Miniature DIP reed relay actuator coil |
| 750 mAt | 0.75 At | Sensitive galvanometric meter coil |
| 1,000 mAt | 1.0 At | Standard 1 At electromagnetic test point |
| 2,500 mAt | 2.5 At | Compact PCB power relay control coil |
| 5,000 mAt | 5.0 At | Industrial solenoid pilot valve actuator |
Engineering Significance of the Ampere-Turn
Whether dealing with high-voltage utility power grids or sensitive micro-electronic inductors, the Ampere-turn is the fundamental link connecting electric circuits to magnetic fields. By Hopkinson’s Law (ℱ = Φ × ℛ), the magnetomotive force in ampere-turns directly determines the magnetic flux density (B) and total flux (Φ) induced in the core material. Converting from mAt to At allows direct input into electromagnetic software packages without scaling errors.
Related Magnetomotive Force Tools
Explore reciprocal and alternative unit conversions across our directory:
- Convert in reverse: Ampere-Turns to Milliampere-Turns Converter
- Convert directly to kilo-units: Milliampere-Turns to Kiloampere-Turns Converter
- View all tools: Magnetomotive Force Converters Directory
Frequently Asked Questions
How do I convert 350 mAt to At?
Divide 350 by 1,000: 350 ÷ 1,000 = 0.35 At.
Can mAt be used to calculate magnetic field strength (H)?
Yes. Convert mAt to At first, then divide by the magnetic path length in meters: H = ℱ / l = At / meters. This gives the magnetic field strength in amperes per meter (A/m).