milligauss (mG) to milliteslas (mT) conversion

1 mG = 0.0001 mTmT → mG
Formula
1 mG = 0.0001 mT

Understanding milligauss to milliteslas Conversion

The milligauss (mG) is a CGS unit of magnetic flux density equal to 10⁻³ gauss, and the millitesla (mT) is an SI subunit equal to 10⁻³ tesla. Because one tesla equals 10,000 gauss, one milligauss equals 0.0001 millitesla. This conversion links the small-field milligauss readings used in EMF surveys with the millitesla scale common in laboratory magnets and industrial equipment.

Conversion Formula

1 mG=0.0001 mT1\ \text{mG} = 0.0001\ \text{mT}

To convert milligauss to milliteslas, multiply by this factor:

mT=mG×0.0001\text{mT} = \text{mG} \times 0.0001

Step-by-Step Example

Convert 25 milligauss to milliteslas.

mT=25×0.0001=0.0025 mT\text{mT} = 25 \times 0.0001 = 0.0025\ \text{mT}

How to Convert milligauss to milliteslas

Convert milligauss to milliteslas using the fixed factor of 0.0001.

  1. Note the field strength: Start with your value in milligauss, for example 25 mG.
  2. Multiply by the factor: Use 0.0001 millitesla per milligauss.
  3. Compute: 25×0.0001=0.002525 \times 0.0001 = 0.0025 mT.
  4. State the result: 25 mG equals 0.0025 milliteslas.

milligauss to milliteslas conversion table

milligauss (mG)milliteslas (mT)
00
10.0001
20.0002
30.0003
40.0004
50.0005
60.0006
70.0007
80.0008
90.0009
100.001
150.0015
200.002
250.0025
300.003
400.004
500.005
600.006
700.007
800.008
900.009
1000.01
1500.015
2000.02
2500.025
3000.03
4000.04
5000.05
6000.06
7000.07
8000.08
9000.09
10000.1
20000.2
30000.3
40000.4
50000.5
100001
250002.5
500005
10000010
25000025
50000050
1000000100

What is the milligauss?

The milligauss is a small unit of magnetic flux density (magnetic field strength) equal to one-thousandth of a gauss. It is widely used in geomagnetism, environmental EMF measurements, and consumer magnetometer readings.

Definition

One milligauss is 10⁻³ gauss, and since the gauss is defined as 10⁻⁴ tesla, the milligauss equals 10⁻⁷ tesla in SI units:

1 mG=1.00000×10−7 T1\ \text{mG} = 1.00000\times10^{-7}\ \text{T}

The gauss is the CGS-Gaussian unit of magnetic flux density, defined as one maxwell per square centimetre. The SI coherent unit is the tesla (1 T = 1 Wb/m²), so 1 G = 100 µT and 1 mG = 100 nT = 0.1 µT.

Origin and History

The gauss is named after the German mathematician and physicist Carl Friedrich Gauss (1777–1855), a pioneer of geomagnetic measurement who, with Wilhelm Weber, established absolute magnetic units. The milligauss arose naturally as a convenient submultiple for the weak fields encountered in everyday and geophysical work.

Law and Notable Facts

The gauss and milligauss are not SI units; the SI officially uses the tesla. Nonetheless the milligauss remains standard in the EMF-measurement and geomagnetism communities. The Earth's magnetic field is a familiar reference: it ranges from roughly 250 to 650 mG over the surface.

Real-World Examples and Conversions

  • Earth's surface magnetic field: about 250–650 mG (25–65 µT).
  • A typical household appliance at 30 cm distance: a few mG to tens of mG.
  • 1000 mG = 1 gauss = 100 µT = 0.0001 T.
  • A refrigerator magnet at its surface: roughly 100–500 G, i.e. 100,000–500,000 mG.

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.

Frequently Asked Questions

How many milliteslas are in a milligauss?

One milligauss equals 0.0001 millitesla, because one tesla equals 10,000 gauss.

How do I convert milliteslas back to milligauss?

Multiply the millitesla value by 10,000. For example, 0.0025 mT equals 25 mG.

When is the millitesla the more natural unit?

The millitesla suits moderate laboratory and industrial fields, such as small permanent magnets and electromagnets, which are far stronger than ambient milligauss levels.

How does a milligauss compare to a millitesla?

A millitesla is 10,000 times stronger than a milligauss, reflecting the large gap between ambient and engineered magnetic fields.

What is the SI unit here?

The tesla is the SI unit of magnetic flux density; the gauss and milligauss are legacy CGS units still used in some fields.

People also convert

mG to TmG to uTmG to G

Complete milligauss conversion table

mG
UnitResult
teslas (T)1e-7 T
milliteslas (mT)0.0001 mT
microteslas (uT)0.1 uT
gauss (G)0.001 G

Magnetic flux density conversions