Convert Tesla to Gauss (T to G)

Formula

G = T × 10000

Derivation from SI units:

• 1 T = 1 Wb/m² = 1 kg/(s²·A), the SI unit of magnetic flux density
• 1 G = 10⁻⁴ T (exact)

Both units are defined exactly, so the factor is exact. Tesla definition: tesla; Gauss definition: gauss.

Worked examples

1. A 1.5 T MRI scanner is 15000 G.
   1.5 T × 10000 = 15000 G
2. A neodymium magnet with a remanence of 1.2 T has 12000 G.
   1.2 T × 10000 = 12000 G

Where it's used

Flux densities in tesla are converted to gauss for gaussmeters, magnet catalogues and US specifications. Multiply by 10 000.

Tesla to other magnetic flux density units

Frequently asked questions

Sources

• The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures .
• 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".

Last reviewed: 2026-10-15. Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.