Convert Nanotesla to Millitesla (nT to mT)
1 nanotesla (nT) = 0.000001 millitesla (mT). 1 mT = 1000000 nT. Example: 15 nT = 15 × 0.000001 = 0.000015 mT.
Also searched as nanotesla to mT, nanotesla in mT, nanotesla into millitesla, nT to mT, nT in millitesla, nT into millitesla, nanotesla to millitesla, nT to millitesla converter and how many millitesla in a nanotesla.
1 nT = 0.000001 mT
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk nanotesla to millitesla converter to paste a column from Excel.
How to Convert Nanotesla to Millitesla
- 1 nT = 0.000001 mT
- 1 mT = 1000000 nT
- Example: convert 15 nT to mT: 15 nT = 15 × 0.000001 mT = 0.000015 mT
Formula
mT = nT ÷ 1000000
Derivation from SI units:
- 1 nT = 10⁻⁹ T (also called a gamma in geophysics)
- 1 mT = 10⁻³ T
- 1 nT = 1 × 10⁻⁹ T ÷ 0.001 T per mT = 0.000001 mT
Both units are defined exactly, so the factor is exact. Nanotesla definition: nanotesla; Millitesla definition: millitesla.
Worked examples
- A reading of 50 nT converts to 0.00005 mT.
50 nT × 0.000001 = 0.00005 mT - A value of 1000 nT is 0.001 mT.
1000 nT × 0.000001 = 0.001 mT
Nanotesla to Millitesla conversion table
| Nanotesla (nT) | Millitesla (mT) |
|---|---|
| 1 nT | 0.000001 mT |
| 5 nT | 0.000005 mT |
| 10 nT | 0.00001 mT |
| 50 nT | 0.00005 mT |
| 100 nT | 0.0001 mT |
| 500 nT | 0.0005 mT |
| 1000 nT | 0.001 mT |
| 25000 nT | 0.025 mT |
| 50000 nT | 0.05 mT |
| 65000 nT | 0.065 mT |
Where it's used
Nanotesla are used for geomagnetic surveys and magnetometers, while millitesla appear in fridge and small permanent magnets (about 5–100 mT). Both measure magnetic flux density (B field), so the conversion is a fixed factor.
Nanotesla to other magnetic flux density units
| Conversion | 1 nT equals |
|---|---|
| nanotesla to millitesla | 0.000001 mT |
| nanotesla to tesla | 1 × 10⁻⁹ T |
| nanotesla to gauss | 0.00001 G |
| nanotesla to microtesla | 0.001 µT |
| nanotesla to milligauss | 0.01 mG |
| nanotesla to kilogauss | 1 × 10⁻⁸ kG |
Frequently asked questions
How many millitesla are in 1 nanotesla?
1 nT = 0.000001 mT.
How do I convert nanotesla to millitesla?
Multiply the value in nT by 0.000001, or divide it by 1000000. For example, 15 nT × 0.000001 = 0.000015 mT.
Is the nT to mT conversion exact?
Yes. Both units are defined exactly, and 1 nT is exactly 0.000001 mT.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures .
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Nanotesla to Millitesla (nT to mT). Retrieved October 25, 2026, from https://scientificconverters.com/magnetic-flux-density/nanotesla-to-millitesla/
IEEE
Scientific Converters, "Convert Nanotesla to Millitesla (nT to mT)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/magnetic-flux-density/nanotesla-to-millitesla/