Tesla to Millitesla Converter

Convert teslas to milliteslas (T to mT) instantly with this free online magnetic-field converter. Enter any value in the Tesla field and get the equivalent in Millitesla immediately. This converter handles any quantity — from tiny fractions to large numbers — with full precision. No signup, no ads in the widget, and the conversion runs entirely in your browser for instant results.

The conversion factor is exact: 1 T = 1000 mT. To convert teslas to milliteslas, multiply your Tesla value by 1000. For example, 10 T = 10000 mT. You can also reverse the calculation: 1 mT = 0.001 T.

Quick conversion table

Tesla (T) Millitesla (mT)
1 T 1000 mT
5 T 5000 mT
10 T 10000 mT
25 T 25000 mT
50 T 50000 mT
100 T 100000 mT

Use the swap button to reverse the direction, or choose a different unit from the dropdown menus to convert within the magnetic-field category.

Result —
Formula —

Formula

Tesla to Millitesla conversion:
1 T = 1000 mT
milliteslas = teslas × 1000
1 mT = 0.001 T
teslas = milliteslas × 0.001

Example

Example: Convert 10 T to mT: 10 T × 1000 = 10000 mT So, 10 T is about 10000 mT. To convert back, multiply by 0.001: 10000 mT × 0.001 = 10 T.

How to Use

  1. Enter the value you want to convert in the Tesla field
  2. The result in Millitesla appears instantly below
  3. Use the dropdown menus to change units if needed
  4. Click 'Swap Units' to reverse the conversion direction
  5. Copy the result or adjust the input for a new conversion

Frequently Asked Questions

How do I convert teslas to milliteslas?

Enter the value in Tesla (T) in the 'From' field. The equivalent in Millitesla (mT) appears instantly in the 'To' field. The converter uses precise conversion factors and updates in real time as you type.

What is the formula to convert T to mT?

1 T = 1000 mT, so milliteslas = teslas × 1000. To convert back, 1 mT = 0.001 T. The full formula and a worked example are shown on this page.

How many milliteslas are in one Tesla?

1 T = 1000 mT.

Is this Tesla to Millitesla converter free?

Yes, completely free with no signup, no limits, and no ads in the converter widget. You can convert as many values as you need. The tool runs entirely in your browser, so your data never leaves your device.

Can I convert milliteslas back to teslas?

Yes. Click the 'Swap Units' button to reverse the direction. You can also use the dropdown menus to select any other magnetic-field unit for either field.

How accurate is the T to mT conversion?

The converter uses high-precision conversion factors (up to 8 decimal places). Results are displayed with up to 6 decimal places, with trailing zeros removed for readability. For scientific or engineering work, always verify with official standards.