🧲 Magnetic Field Converter

Convert magnetic flux density (magnetic field) units — tesla, gauss, millitesla, microtesla, milligauss and nanotesla. 1 tesla = 10,000 gauss.

From

1 T = 1000 mT

Precision

1 teslas = 1000 milliteslas

1 × 1000 = 1000

1 T equals 1000 mT, so multiplying by 1000 converts the value. The result describes the exact same quantity — only the measuring stick changes.

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Popular magnetic field conversions

Unit	Symbol	Definition
Tesla	T	The SI unit of magnetic flux density. A fridge magnet is a few millitesla; an MRI scanner runs at 1.5–3 T. Earth's field is only about 50 microtesla.
Millitesla	mT	One-thousandth of a tesla (10⁻³ T), equal to 10 gauss. Handy for everyday magnets, which sit in the single-to-hundreds of millitesla range.
Microtesla	µT	One-millionth of a tesla (10⁻⁶ T). Earth's magnetic field at the surface is about 25–65 µT, so this unit suits geomagnetic and biomagnetic measurements.
Gauss	G	The CGS unit of magnetic flux density — exactly 10⁻⁴ tesla, so 1 T = 10,000 G. Still widely used for magnet ratings and Earth's field (~0.5 G).
Milligauss	mG	One-thousandth of a gauss (10⁻⁷ T). EMF meters and power-line field measurements are usually quoted in milligauss.
Nanotesla	nT	One-billionth of a tesla (10⁻⁹ T), also called a gamma (γ) in geophysics. Used for small variations in Earth's field and magnetic surveying.