Convert Ampere-turns to Gilberts
Convert Ampere-turns (A·t) to Gilberts (Gb) instantly and accurately.
Conversion Formula
Gb = A·t × 1.256637061
About Ampere-turns
The ampere-turn (A·t) is the SI practical unit of magnetomotive force, defined as F = N × I (turns × current). A 100-turn relay coil at 10 mA produces 1 A·t; power transformer cores typically operate at 100-1000 A·t. 1 A·t = 1 A (turn is dimensionless in SI).
About Gilberts
The gilbert (Gb) equals exactly 10/(4π) A·t ≈ 0.7958 A·t, the CGS unit of magnetomotive force named after William Gilbert (1544-1603). Widely used in older relay and electromagnet datasheets; 1 Gb = 1 oersted·centimetre. 1 Gb = 10/(4π) A·t.
Quick Reference Table
| Ampere-turns (A·t) | Gilberts (Gb) |
|---|---|
| 1 A·t | 1.25664 Gb |
| 2 A·t | 2.51327 Gb |
| 5 A·t | 6.28319 Gb |
| 10 A·t | 12.5664 Gb |
| 25 A·t | 31.4159 Gb |
| 50 A·t | 62.8319 Gb |
| 100 A·t | 125.664 Gb |