Convert tesla, gauss, oersted, and ampere per meter for magnetic field calculations.
Enter a magnetic-field value, identify its current unit, and select tesla, gauss, oersted, or ampere per meter as the destination. The converter applies direct unit relationships within magnetic flux density or field strength and expresses cross-family results as free-space equivalents. The important distinction is that these four units do not all measure the same physical quantity. Tesla and gauss describe magnetic flux density B, while oersted and ampere per meter describe magnetic field strength H. Material permeability matters whenever a conversion crosses from B to H.
A concrete input and expected output from the current implementation.
Input
1 tesla to gauss
Expected output
10000 gauss
One gauss is exactly 0.0001 tesla. Dividing 1 tesla by 0.0001 gives 10,000 gauss.
Tesla (T) and gauss (G) both express magnetic flux density B. Their scale relationship is exact: 1 T equals 10,000 G, so conversion shifts the decimal point four places. No information about the field source or surrounding material is needed for this pair because both units describe the same physical quantity.
Ampere per meter (A/m) and oersted (Oe) express field strength H. The conventional unit relationship is 1 Oe equals 1000/(4*pi) A/m, approximately 79.5775 A/m. Connecting H to B uses B = mu H. Vacuum permeability gives a free-space equivalent. A material-specific conversion needs the relevant permeability, which can change with operating conditions.
No. Gauss measures magnetic flux density B, whereas oersted measures magnetic field strength H. Their numerical values are commonly paired one-for-one for vacuum in cgs usage, which causes confusion. In matter, magnetization changes the relationship. Do not substitute one for the other unless the physical context supplies the required vacuum or permeability assumption.
Only with an assumption about permeability. Tesla is a B unit and A/m is an H unit, so B = mu H must connect them. A free-space conversion uses vacuum permeability and is useful as an equivalent field value. It may not represent H inside a permanent magnet, magnetic core, shield, or other material.
The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
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