Convert Milligauss to Microtesla (mG to µT)

Formula

µT = mG ÷ 10

Derivation from SI units:

• 1 mG = 10⁻³ G = 10⁻⁷ T = 0.1 µT
• 1 µT = 10⁻⁶ T
• 1 mG = 1 × 10⁻⁷ T ÷ 0.000001 T per µT = 0.1 µT

Both units are defined exactly, so the factor is exact. Milligauss definition: milligauss; Microtesla definition: microtesla.

Worked examples

1. An EMF reading of 2 mG is 0.2 µT.
   2 mG × 0.1 = 0.2 µT
2. The Earth's field, about 500 mG, is 50 µT.
   500 mG × 0.1 = 50 µT

Where it's used

EMF meter readings in milligauss are converted to microtesla to compare with ICNIRP and other exposure guidelines in SI units. Divide by 10.

Milligauss to other magnetic flux density units

Frequently asked questions

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