Understanding teslas to milligauss Conversion
The tesla (T) is the SI unit of magnetic flux density, while the milligauss (mG) is one-thousandth of a gauss and belongs to the CGS system. Milligauss is the unit favoured in EMF surveys of homes and offices, where fields near appliances and wiring are only a few milligauss. Converting teslas to milligauss is useful for translating a scientific field value into the fine-grained scale used by gaussmeters and building-safety inspections.
Conversion Formula
To convert teslas to milligauss, multiply by this factor:
Step-by-Step Example
Convert 25 teslas to milligauss.
How to Convert teslas to milligauss
Turn a tesla value into the milligauss scale used by field surveys.
- Record the tesla figure: Begin with the flux density in teslas.
- Multiply by ten million: Since 1 T equals 10,000,000 mG, multiply accordingly.
- Report in milligauss: The result matches the units on a survey gaussmeter.
- Worked result: 25 T becomes 25 × 10,000,000 = 250,000,000 mG.
teslas to milligauss conversion table
| teslas (T) | milligauss (mG) |
|---|---|
| 0 | 0 |
| 1 | 10000000 |
| 2 | 20000000 |
| 3 | 30000000 |
| 4 | 40000000 |
| 5 | 50000000 |
| 6 | 60000000 |
| 7 | 70000000 |
| 8 | 80000000 |
| 9 | 90000000 |
| 10 | 100000000 |
| 15 | 150000000 |
| 20 | 200000000 |
| 25 | 250000000 |
| 30 | 300000000 |
| 40 | 400000000 |
| 50 | 500000000 |
| 60 | 600000000 |
| 70 | 700000000 |
| 80 | 800000000 |
| 90 | 900000000 |
| 100 | 1000000000 |
| 150 | 1500000000 |
| 200 | 2000000000 |
| 250 | 2500000000 |
| 300 | 3000000000 |
| 400 | 4000000000 |
| 500 | 5000000000 |
| 600 | 6000000000 |
| 700 | 7000000000 |
| 800 | 8000000000 |
| 900 | 9000000000 |
| 1000 | 10000000000 |
| 2000 | 20000000000 |
| 3000 | 30000000000 |
| 4000 | 40000000000 |
| 5000 | 50000000000 |
| 10000 | 100000000000 |
| 25000 | 250000000000 |
| 50000 | 500000000000 |
| 100000 | 1000000000000 |
| 250000 | 2500000000000 |
| 500000 | 5000000000000 |
| 1000000 | 10000000000000 |
What is the Tesla?
The tesla is the SI derived unit of magnetic flux density (also called magnetic B-field or magnetic induction). It quantifies the strength of a magnetic field and is used throughout physics, electrical engineering, and medical imaging.
Definition
One tesla is the magnetic flux density of a uniform field that produces a flux of one weber through an area of one square metre perpendicular to the field.
In SI base units, . Equivalently, one tesla is the field in which a charge of one coulomb moving at one metre per second perpendicular to the field feels a force of one newton: .
Origin and History
The unit is named after Nikola Tesla (1856–1943), the inventor and electrical engineer whose work on alternating current and induction motors shaped modern power systems. The name was adopted by the General Conference on Weights and Measures (CGPM) in 1960, when the tesla was formally added to the SI.
Law and Notable Facts
The tesla is a large unit; most everyday magnetic fields are far weaker. Its non-SI counterpart, the gauss, equals exactly tesla and is still common in some fields. The strongest continuous magnetic fields produced in laboratories reach around 45 T, while pulsed magnets briefly exceed 1000 T.
Real-World Examples and Conversions
- Earth's surface magnetic field is roughly 25–65 microteslas (0.25–0.65 gauss).
- A typical clinical MRI scanner operates at 1.5 T or 3 T.
- A strong neodymium refrigerator-type magnet produces around 0.1–1 T at its surface.
- 1 T = 10,000 gauss = 1000 millitesla = 1,000,000 microtesla.
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:
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.
Frequently Asked Questions
How many milligauss are in one tesla?
One tesla equals 10,000,000 milligauss, combining the 10,000 gauss per tesla with 1,000 milligauss per gauss.
What milligauss level is typical in a home?
Background fields in a residence are often under 1 mG, rising to a few mG near operating appliances.
Why do EMF inspectors use milligauss?
Milligauss resolves the very small residential fields that would otherwise be tiny fractions of a gauss or micro-fractions of a tesla.
How do I convert 0.0001 T to milligauss?
Multiply 0.0001 by 10,000,000 to get 1,000 mG, equal to one gauss.
Is a reading of a few milligauss a concern?
Most public-exposure guidelines sit well above a few milligauss, so typical home readings are far below common reference limits.
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Complete teslas conversion table
| Unit | Result |
|---|---|
| milliteslas (mT) | 1000 mT |
| microteslas (uT) | 1000000 uT |
| gauss (G) | 10000 G |
| milligauss (mG) | 10000000 mG |