Magnetic Flux Density Converter
Convert any magnetic flux density unit to another with this free magnetic flux density converter. It supports 5 units including tesla, millitesla, microtesla, nanotesla, gauss. Pick a conversion below for a dedicated calculator, formula, and reference table. For example, 1 T = 1000 mT.
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About these units
Tesla (T)
- Definition
- The tesla (T) is the SI unit of magnetic flux density, equal to one weber per square meter or one volt·second per square meter.
- History
- Named after inventor Nikola Tesla, it was adopted by the CGPM in 1960.
- Current use
- MRI scanners operate at 1.5–3 T; research magnets reach tens of tesla. It is the standard unit in electromagnetism and medical imaging.
Millitesla (mT)
- Definition
- A millitesla (mT) is one thousandth of a tesla.
- History
- A metric sub-multiple of the tesla.
- Current use
- Millitesla values describe permanent magnets and therapeutic magnetic-field devices.
Microtesla (µT)
- Definition
- A microtesla (µT) is one millionth of a tesla.
- History
- A metric sub-multiple used in geomagnetic and environmental studies.
- Current use
- Earth's magnetic field strength is approximately 25–65 µT at the surface.
Nanotesla (nT)
- Definition
- A nanotesla (nT) is one billionth of a tesla, also equal to one gamma.
- History
- Widely used in geophysics before the SI unit was established.
- Current use
- Magnetometers in archaeology, mineral exploration, and satellite missions report in nanotesla.
Gauss (G)
- Definition
- The gauss (G) is a CGS unit of magnetic flux density equal to 10⁻⁴ tesla.
- History
- Named after Carl Friedrich Gauss; it was the standard unit in the older CGS electromagnetic system.
- Current use
- Gauss is still widely used in industry for permanent magnets, MRI fringe fields, and legacy engineering documents.
Frequently asked questions
What magnetic flux density units can I convert?
This magnetic flux density converter supports 5 units: tesla, millitesla, microtesla, nanotesla, gauss. Select any pair below to open a dedicated converter with a formula and conversion table.
How accurate is the magnetic flux density converter?
Conversions use exact definitional factors, so results are accurate to the precision you need for science, engineering, and everyday use. Values are rounded only for display.
Is the magnetic flux density converter free?
Yes. Every magnetic flux density conversion is completely free, needs no sign-up, and runs entirely in your browser — your inputs never leave your device.
Free, private, and instant — every conversion runs in your browser.
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