milliteslas (mT) to microteslas (uT) conversion

1 mT = 1000 uTuT → mT
Formula
1 mT = 1000 uT

Understanding milliteslas to microteslas Conversion

The millitesla (mT) and microtesla (µT) are SI subunits of the tesla, the unit of magnetic flux density. A millitesla is one-thousandth of a tesla and a microtesla is one-millionth, so a millitesla is 1000 times larger. This conversion is handy when strong laboratory or magnet fields measured in mT are compared with weak fields such as the Earth's magnetic field or household appliance emissions, which are naturally expressed in µT.

Conversion Formula

1 mT=1000 uT1\ \text{mT} = 1000\ \text{uT}

To convert milliteslas to microteslas, multiply by this factor:

uT=mT×1000\text{uT} = \text{mT} \times 1000

Step-by-Step Example

Convert 25 milliteslas to microteslas.

uT=25×1000=25000 uT\text{uT} = 25 \times 1000 = 25000\ \text{uT}

How to Convert milliteslas to microteslas

Stepping down from millitesla to the thousand-times-smaller microtesla is a simple multiplication.

  1. Take the field in milliteslas: For example, 25 mT.
  2. Multiply by 1000: Each millitesla contains 1000 microteslas.
  3. State in microteslas: The result suits weak-field or ambient measurements.
  4. Worked result: 25 mT × 1000 = 25,000 µT.

milliteslas to microteslas conversion table

milliteslas (mT)microteslas (uT)
00
11000
22000
33000
44000
55000
66000
77000
88000
99000
1010000
1515000
2020000
2525000
3030000
4040000
5050000
6060000
7070000
8080000
9090000
100100000
150150000
200200000
250250000
300300000
400400000
500500000
600600000
700700000
800800000
900900000
10001000000
20002000000
30003000000
40004000000
50005000000
1000010000000
2500025000000
5000050000000
100000100000000
250000250000000
500000500000000
10000001000000000

What is the Millitesla?

The millitesla is a decimal submultiple of the tesla, the SI unit of magnetic flux density. It is a convenient scale for describing moderately strong magnetic fields such as those near permanent magnets and small electromagnets.

Definition

One millitesla is one thousandth of a tesla.

1 mT=0.001 T1\ \text{mT} = 0.001\ \text{T}

In SI base units, 1 mT=10−3 kg⋅s−2⋅A−11\ \text{mT} = 10⁻³\ \text{kg}\cdot\text{s}^{-2}\cdot\text{A}^{-1}. Because one gauss equals 10−410⁻⁴ tesla, one millitesla equals exactly 10 gauss, a relation that makes the millitesla especially handy when translating between SI and legacy CGS field measurements.

Origin and History

The millitesla inherits its name from Nikola Tesla via the tesla, adopted into the SI in 1960, combined with the standard SI prefix "milli" (one thousandth), introduced in the metric system's prefix scheme. It became a practical working unit as magnetic measurements standardized on SI in the later 20th century.

Law and Notable Facts

As a coherent SI submultiple, the millitesla is fully sanctioned for scientific and engineering use. Many benchtop laboratory magnets, magnetic separators, and material-testing fields fall naturally in the tens-to-hundreds of millitesla range, bridging the gap between weak ambient fields and the multi-tesla fields of MRI or research magnets.

Real-World Examples and Conversions

  • A small solenoid or relay coil field is often a few millitesla.
  • A typical hard-disk or speaker magnet produces a few hundred millitesla near its poles.
  • Earth's field of about 50 microtesla equals 0.05 mT.
  • 1 mT = 0.001 T = 10 gauss = 1000 microtesla.

What is the Microtesla?

The microtesla is a decimal submultiple of the tesla, the SI unit of magnetic flux density. It is the natural scale for weak magnetic fields, most notably the Earth's geomagnetic field and stray fields from household wiring and appliances.

Definition

One microtesla is one millionth of a tesla.

1 μT=0.000001 T1\ \mu\text{T} = 0.000001\ \text{T}

In SI base units, 1 μT=10−6 kg⋅s−2⋅A−11\ \mu\text{T} = 10⁻⁶\ \text{kg}\cdot\text{s}^{-2}\cdot\text{A}^{-1}. Since one gauss equals 10−410⁻⁴ tesla, one microtesla equals exactly 10−210⁻² gauss (that is, 10 milligauss), a conversion frequently used in geomagnetism and EMF surveys.

Origin and History

The microtesla combines the tesla, named for Nikola Tesla and adopted into the SI in 1960, with the SI prefix "micro" (one millionth). It rose to prominence as scientists standardized geomagnetic and environmental field measurements on SI units, replacing the older gauss and gamma (1 γ=1 nT1\ \gamma = 1\ \text{nT}).

Law and Notable Facts

The microtesla is a fully coherent SI submultiple. It is the customary unit for reporting the Earth's magnetic field and for public-exposure discussions: international guidelines (ICNIRP) set reference levels for power-frequency magnetic fields on the order of 100–200 microtesla for the general public.

Real-World Examples and Conversions

  • Earth's magnetic field ranges from about 25 microtesla near the equator to 65 microtesla near the poles.
  • Magnetic fields directly beneath high-voltage power lines can reach several microtesla.
  • 1 microtesla = 10 milligauss = 0.01 gauss.
  • 1 microtesla = 0.001 mT = 0.000001 T.

Frequently Asked Questions

How many microteslas are in a millitesla?

Exactly 1000 microteslas equal one millitesla, as both are decimal fractions of the tesla.

Why convert mT to µT?

Strong fields (magnets, MRI gradients) are stated in millitesla, while weak ambient fields are measured in microtesla, so converting lets both be compared on one scale.

What is the Earth's magnetic field in these units?

The Earth's surface field is about 25–65 µT, which is only 0.025–0.065 mT.

How do I convert 3 milliteslas to microteslas?

Multiply 3 by 1000 to get 3000 µT.

Which unit describes power-line or appliance fields?

Everyday electromagnetic fields near appliances are typically a few microteslas, so mT lab values are converted to µT for such comparisons.

People also convert

mT to TmT to GmT to mG

Complete milliteslas conversion table

mT
UnitResult
teslas (T)0.001 T
microteslas (uT)1000 uT
gauss (G)10 G
milligauss (mG)10000 mG

Magnetic flux density conversions