Magnetic Flux Density Converter
Convert magnetic flux density units with the factor behind each answer. SI uses the tesla and the older CGS system uses the gauss.
1 µT = 10 mG
Common conversions
- 1 µT = 10 mG
- 1 mG = 0.1 µT
- 1 G = 0.1 mT
- 1 mT = 10 G
- 1 T = 10,000 G
Tesla and gauss
One gauss is 0.1 millitesla, so 1 µT is 10 mG. Exposure limits and instruments use one or the other, and a reading in mG must be converted before comparing it with a limit in µT.
Where it matters
Magnetic fields near cables, busbars and transformers are measured in µT or mG. Transformer core flux is designed in tesla, and typical silicon-steel cores operate around 1.5 to 1.7 T.
Unit factors
Every unit in terms of the base unit shown. To convert, multiply by the factor of the unit you have and divide by the factor of the unit you want.
| Unit | Equals | What it is |
|---|---|---|
| nT | 1 × 10⁻⁹ T | Nanotesla. Earth-field and sensor level. |
| µT | 1 × 10⁻⁶ T | Microtesla. Magnetic field exposure limits and Earth's field (about 25 to 65 µT). |
| mG | 1 × 10⁻⁷ T | Milligauss. Common in power-frequency field measurement; 10 mG equals 1 µT. |
| mT | 0.001 T | Millitesla. |
| G | 0.0001 T | Gauss, the CGS unit: 0.1 millitesla. |
| T | 1 T | Tesla, the SI unit of magnetic flux density: one weber per square metre. |
Conversion pages
Frequently asked questions
What is the formula to convert µT to mG?
mG = µT × 10. For example, 50 µT is 500 mG.
How do I convert mG back to µT?
µT = mG × 0.1. The Swap button above reverses the direction for any pair of units.
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