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Magnetic Field Strength Converter

Convert magnetic field strength between ampere per metre, oersted, ampere-turn per metre, and related units.

Convert instantly
Enter a value and choose the units. Your answer updates as you type.

Result

0.0125663706144 Oersted (Oe)

Quick reference
  • Ampere per metre (A/m)1 base units
  • Oersted (Oe)79.57747154594767 base units
  • Ampere-turn per metre (At/m)1 base units
  • Kiloampere per metre (kA/m)1000 base units

About the Magnetic Field Strength Converter

Magnetic field strength H describes the magnetizing force per length and should not be confused with flux density B. Solenoids, cores, shielding, and field calculations use A/m; the oersted is retained as a CGS-era counterpart. This page retains the standard SI relationship while keeping customary and legacy units explicit, which is important when a specification crosses disciplines.

Enter a value to see the conversion immediately—for example, 1 oersted equals approximately 79.57747155 A/m in the standard vacuum conversion. For a related check, use the Magnetomotive Force Converter and Magnetic Flux Density Converter; those tools describe a different but commonly connected quantity.

Frequently asked questions

What does the magnetic field strength measure?

Magnetic field strength H describes the magnetizing force per length and should not be confused with flux density B. Solenoids, cores, shielding, and field calculations use A/m; the oersted is retained as a CGS-era counterpart.

What is a useful reference conversion for magnetic field strength?

1 oersted equals approximately 79.57747155 A/m in the standard vacuum conversion.

Are the factors on this page exact?

SI prefixes and internationally defined units use their standard factors. Legacy and customary factors are retained at their published scientific definitions and may be rounded only for display.

Take this calculation further

Browse the converters calculators collection for more tools in this subject.

For a related calculation, use Magnetic Flux Converter to convert magnetic flux between webers, maxwells, milliwebers, and microwebers with exact SI and CGS factors. Alternatively, use Magnetomotive Force Converter to convert magnetomotive force between ampere-turns, ampere, and gilberts using standard magnetic circuit factors.