Convert Gauss to Millitesla (G to mT)
1 gauss (G) = 0.1 millitesla (mT). 1 mT = 10 G. Example: 100 G = 100 × 0.1 = 10 mT.
Also searched as gauss to mT, gauss in mT, gauss into millitesla, G to mT, G in millitesla, G into millitesla, gauss to millitesla, G to millitesla converter and how many millitesla in a gauss.
1 G = 0.1 mT
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gauss to millitesla converter to paste a column from Excel.
How to Convert Gauss to Millitesla
- 1 G = 0.1 mT
- 1 mT = 10 G
- Example: convert 100 G to mT: 100 G = 100 × 0.1 mT = 10 mT
Formula
mT = G ÷ 10
Derivation from SI units:
- 1 G = 10⁻⁴ T (exact)
- 1 mT = 10⁻³ T
- 1 G = 0.0001 T ÷ 0.001 T per mT = 0.1 mT
Both units are defined exactly, so the factor is exact. Gauss definition: gauss; Millitesla definition: millitesla.
Worked examples
- A 100 G surface field is 10 mT.
100 G × 0.1 = 10 mT - A 3000 G magnetic separator is 300 mT.
3000 G × 0.1 = 300 mT
Gauss to Millitesla conversion table
| Gauss (G) | Millitesla (mT) |
|---|---|
| 0.25 G | 0.025 mT |
| 0.5 G | 0.05 mT |
| 1 G | 0.1 mT |
| 10 G | 1 mT |
| 50 G | 5 mT |
| 100 G | 10 mT |
| 1000 G | 100 mT |
| 3000 G | 300 mT |
| 5000 G | 500 mT |
| 10000 G | 1000 mT |
| 12000 G | 1200 mT |
| 15000 G | 1500 mT |
Where it's used
Gauss readings are converted to millitesla for SI reports, magnetic separators and sensor specifications. Divide by 10.
Gauss to other magnetic flux density units
| Conversion | 1 G equals |
|---|---|
| gauss to millitesla | 0.1 mT |
| gauss to tesla | 0.0001 T |
| gauss to microtesla | 100 µT |
| gauss to milligauss | 1000 mG |
| gauss to nanotesla | 100000 nT |
| gauss to kilogauss | 0.001 kG |
Frequently asked questions
How do I convert gauss to mT?
Divide by 10: 3000 G = 300 mT.
How many millitesla are in 1 gauss?
1 G = 0.1 mT.
How do I convert gauss to millitesla?
Multiply the value in G by 0.1, or divide it by 10. For example, 100 G × 0.1 = 10 mT.
Is the G to mT conversion exact?
Yes. Both units are defined exactly, and 1 G is exactly 0.1 mT.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "gauss".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures .
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Gauss to Millitesla (G to mT). Retrieved October 25, 2026, from https://scientificconverters.com/magnetic-flux-density/gauss-to-millitesla/
IEEE
Scientific Converters, "Convert Gauss to Millitesla (G to mT)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/magnetic-flux-density/gauss-to-millitesla/