Enter Gauss or Tesla values into the calculator to convert between G and mT (and related subunits).
Assumptions Assumptions
- Conversions are unit-to-unit for magnetic flux density B (no direction, uniform field assumed).
- Standards: 1 T = 10,000 G; 1 mT = 10 G; 1 µT = 0.01 G; 1 nT = 0.00001 G.
- CGS (Gauss) and SI (Tesla) systems only; Oersted (H) or magnetic moment units are not included.
- Values are magnitudes; polarity/sign is not considered.
When to Use This Calculator
- Reporting Gaussmeter readings in SI units (mT, µT, nT).
- Comparing datasheets or academic references that mix Gauss and Tesla.
- Lab, environmental EMF surveys, and magnet design work requiring quick, accurate unit changes.
Input Definitions
- Gauss — choose G, mG, or µG (CGS units).
- Tesla — choose mT, T, µT, or nT (SI units).
- Conversions — T = G × 10-4; mT = G × 0.1; G = mT × 10.
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G to mT Formula
The following formulas convert Gauss (G) to milliTesla (mT) and back; Gauss is CGS and Tesla is SI for magnetic flux density B.
\mathrm{mT} = 0.1\,\mathrm{G}- 1 T = 10,000 G
- 1 mT = 10 G
- 1 G = 0.1 mT
- 1 µT = 0.01 G = 1e-6 T; 1 nT = 1e-5 G = 1e-9 T
G to mT Conversion Table
| Gauss (G) | MilliTesla (mT) |
|---|---|
| 0.01 | 0.001 |
| 0.02 | 0.002 |
| 0.05 | 0.005 |
| 0.1 | 0.01 |
| 0.2 | 0.02 |
| 0.5 | 0.05 |
| 1 | 0.1 |
| 2 | 0.2 |
| 5 | 0.5 |
| 10 | 1 |
| 20 | 2 |
| 50 | 5 |
| 100 | 10 |
| 200 | 20 |
| 500 | 50 |
| 1,000 | 100 |
| 2,000 | 200 |
| * CGS–SI relation: 1 G = 0.1 mT and 1 T = 10,000 G. | |
How do you convert Gauss to milliTesla? Multiply Gauss by 0.1 to get mT (mT = G × 0.1).
How do you convert milliTesla to Gauss? Multiply milliTesla by 10 to get Gauss (G = mT × 10).
Example Problem
Convert 15 G to mT.
Use the relation: mT = G × 0.1.
mT = 15 × 0.1 = 1.5 mT
