Tesla T

SI Derived UnitMagnetic flux density
SymbolT
SystemSI Derived Unit
QuantityMagnetic flux density
Value in SI1 T = 1 Wb/m² = 1 kg·s⁻²·A⁻¹
Defined / adopted1960 (11th CGPM)

About the Tesla

The tesla measures magnetic flux density and is named after Nikola Tesla. One tesla equals 10,000 gauss, the older CGS unit. The Earth's field at the surface is of the order of 50 microtesla, while hospital MRI scanners commonly use 1.5 or 3 tesla.

Related Units

Henry

H
SI Derived UnitInductance

1 H = 1 Wb/A = 1 kg·m²·s⁻²·A⁻²

A circuit has an inductance of one henry when a current changing at one ampere per second induces one volt. It is named...

Weber

Wb
SI Derived UnitMagnetic flux

1 Wb = 1 V·s = 1 kg·m²·s⁻²·A⁻¹

The weber is the magnetic flux that, falling uniformly to zero in one second, induces one volt in a single-turn loop...

Gauss

G
CGSMagnetic flux density

10⁻⁴ T (exact)

The gauss is the CGS unit of magnetic flux density, exactly 10⁻⁴ tesla. It is named after Carl Friedrich Gauss. Fridge...

Hertz

Hz
SI Derived UnitFrequency

1 Hz = 1 s⁻¹

The hertz is one cycle or event per second and replaced the older expression cycles per second. It is named after...