Unit Conversion

Convert numbers between two units quickly and precisely

Magnetic Flux Density

Unit Conversion

Convert magnetic flux density: tesla, millitesla, and gauss

Magnetic flux density is stated in tesla (T), the SI unit. In the older CGS system, gauss (G) is common; for weaker fields, millitesla (mT) and microtesla (µT) – the latter used, for example, for Earth's magnetic field.

Key conversion factors:

  • 1 tesla (T) = 10,000 gauss (G)
  • 1 tesla (T) = 1,000 millitesla (mT) = 1,000,000 microtesla (µT)
  • Earth's magnetic field: approx. 25 to 65 microtesla

Applications:

  • Medical technology: field strengths of MRI machines, typically 1.5 or 3 tesla
  • Magnetism: characterizing permanent magnets in millitesla
  • Physics: field strengths in particle accelerators

The magnetic flux density converter supports comparing magnetic fields and evaluating MRI field strengths.

Frequently asked questions about converting magnetic flux density

1 tesla (T) equals 10,000 gauss (G). Gauss comes from the older CGS system and is still frequently used for stating permanent magnet field strengths, while tesla is the modern SI unit.

Earth's magnetic field is extremely weak at about 25 to 65 microtesla, while medical MRI machines typically reach 1.5 or 3 tesla – roughly 30,000 to 120,000 times stronger than Earth's natural magnetic field.

Commercial permanent magnets typically reach field strengths of a few hundred millitesla at their surface, rarely more than 1-2 tesla for strong neodymium magnets. Millitesla is therefore the more practical unit for everyday magnet applications.