Quick reference table
Common magnetic flux density conversions
| From | To |
|---|---|
| 1 G | 0.1 mT |
| 1 mT | 1 G |
| 1 T | 1 G |
| 1 G | 0.0001 T |
| 1 µT | 0.01 G |
| 1 nT | 0.001 µT |
How to convert magnetic flux density
Magnetic flux density (the strength of a magnetic field) is measured in tesla in the SI system and in gauss in older CGS usage. The Earth's field is roughly 25 to 65 microtesla, or about half a gauss.
Every magnetic flux density unit is a fixed multiple of one base unit, the T. To convert a value, multiply it by the size of the starting unit and divide by the size of the target unit. For example, to convert G to mT, multiply by 0.1. To go the other way, divide by 0.1.
The converter above does this for you and shows the exact formula under the result.
Worked examples
Gauss to Millitesla
| Gauss (G) | Millitesla (mT) |
|---|---|
| 1 G | 0.1 mT |
| 2 G | 0.2 mT |
| 5 G | 0.5 mT |
| 10 G | 1.0 mT |
| 25 G | 2.5 mT |
| 50 G | 5.0 mT |
| 100 G | 10.0 mT |
| 1,000 G | 100.0 mT |
Millitesla to Gauss
| Millitesla (mT) | Gauss (G) |
|---|---|
| 1 mT | 1 G |
| 2 mT | 2 G |
| 5 mT | 5 G |
| 10 mT | 1 G |
| 25 mT | 25 G |
| 50 mT | 5 G |
| 100 mT | 1 G |
| 1,000 mT | 1 G |
Magnetic flux density units explained
| Unit | Symbol | Equals |
|---|---|---|
| Nanotesla | nT | 1 nT = 1 × 10⁻⁹ T |
| Microtesla | µT | 1 µT = 0.000001 T |
| Millitesla | mT | 1 mT = 0.001 T |
| Tesla | T | 1 T = 1 T |
| Kilotesla | kT | 1 kT = 1,000 T |
| Gauss | G | 1 G = 0.0001 T |
| Gamma | γ | 1 γ = 1 × 10⁻⁹ T |
| Webers per square meter | Wb/m² | 1 Wb/m² = 1 T |
| Maxwells per square centimeter | Mx/cm² | 1 Mx/cm² = 0.0001 T |
Popular conversions: gauss to tesla, tesla to gauss.
Frequently asked questions
How many gauss is 1 tesla?
One tesla is 10,000 gauss.
How do I convert G to mT?
Multiply the value in G by 0.1 to get mT. For example, 10 G = 1.0 mT.
How many mT is 1 G?
1 G = 0.1 mT, and 1 mT = 1 G.
Does this magnetic flux density converter work offline?
Yes. After the page has loaded once, all calculations run in your browser, so it keeps working without an internet connection.