Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Unit Converters
SI Tesla Prefix Converter (nT, µT, mT, T)
teslas · 420 prefix pairs
microteslas
50,000 µT
Multiply by 10^3. Same dimension; only the zeros move.
- You entered
- 50 mT
- Factor
- 10^3
- In scientific notation
- 5.000000e+4
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
From prefix
The “From prefix” value used in this tool’s formula. Adjust it to see results update live.
to = from × 10^(fromExp − toExp) on teslas.
Earth’s field is tens of microteslas. Fridge magnets are milliteslas. MRI is teslas. A 50 µT quiet-room reading is 0.05 mT. Gauss is 10⁻⁴ T — not a prefix, a different system.
How this calculator works
Earth’s field is tens of microteslas. Fridge magnets are milliteslas. MRI is teslas. A 50 µT quiet-room reading is 0.05 mT. Gauss is 10⁻⁴ T — not a prefix, a different system. to = from × 10^(fromExp − toExp) on teslas. Scenario: 50 µT → 0.05 mT → 5×10⁻⁵ T. A 1.5 T MRI magnet is 1,500 mT.
to = from × 10^(fromExp − toExp) on teslas.
Scenario: 50 µT → 0.05 mT → 5×10⁻⁵ T. A 1.5 T MRI magnet is 1,500 mT.
When to use this SI Tesla Prefix
Common use cases
- Earth’s field is tens of microteslas. Fridge magnets are milliteslas. MRI is teslas. A 50 µT quiet-room reading is 0.05 mT. Gauss is 10⁻⁴ T — not a prefix, a different system.
- Sanity-check with this scenario: 50 µT → 0.05 mT → 5×10⁻⁵ T. A 1.5 T MRI magnet is 1,500 mT.
- The relationship is: to = from × 10^(fromExp − toExp) on teslas.
Localized examples
- Unit Converters: the example on this page uses the same formula as the widget.
What you get
- Fields: From prefix
- to = from × 10^(fromExp − toExp) on teslas.
- Scenario on the page: 50 µT → 0.05 mT → 5×10⁻⁵ T. A 1.5 T MRI magnet is 1,500 mT.
How to Convert SI Tesla Prefix
- 1Enter From prefix. Use the values you have, not a catalog average, unless that is all you know.
- 2to = from × 10^(fromExp − toExp) on teslas.
- 3Scenario: 50 µT → 0.05 mT → 5×10⁻⁵ T. A 1.5 T MRI magnet is 1,500 mT.
- 4Check which dictionary the other person is using — US or UK, decimal or 1,024 — then trust the number.
Governing formula
to = from × 10^(fromExp − toExp) on teslas.
50 µT → 0.05 mT → 5×10⁻⁵ T. A 1.5 T MRI magnet is 1,500 mT.
50 µT → 0.05 mT → 5×10⁻⁵ T. A 1.5 T MRI magnet is 1,500 mT.
Variable definitions
- value
From prefix
The “From prefix” field. Default 50; typical range 0–1e+24.
- The conversion (to = from × 10^(fromExp − toExp) on teslas.) does not pick US vs UK gallons, SI vs binary megabytes, or Mach at altitude for you. Read the footnote on the page.
- Nothing here is uploaded for the calculation itself.
Frequently Asked Questions
1 G = 10⁻⁴ T = 100 µT. Convert gauss separately; do not pick a fake “giga” prefix.
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Reviews & Ratings
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4.8
out of 5.0
4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
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