complete.tools

Magnetic Field Strength Converter

Convert between magnetic field strength units including amperes per meter, oersteds, and related units.

What this tool does

Convert between magnetic field strength units including amperes per meter, oersteds, and related units. Type an amount in amperes per meter, choose the units, and the tool converts it to oersteds. It offers 8 magnetic field strength units and also shows the same amount in the others.

Inputs

  • Value: A number.
  • From: Choose one: Ampere per meter, Kiloampere per meter, Milliampere per meter, Microampere per meter, Ampere per centimeter, Ampere per millimeter, Ampere per inch, Oersted. Starts as Ampere per meter.
  • To: Choose one of the same 8 units as "From". Starts as Oersted.

How to use

  1. Enter the amount you want to convert.
  2. Choose the unit to convert from and the unit to convert to.
  3. Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.

Worked examples

Conversions from amperes per meter to oersteds:

  • 1 A/m ≈ 0.0125664 Oe
  • 5 A/m ≈ 0.0628319 Oe
  • 10 A/m ≈ 0.125664 Oe
  • 50 A/m ≈ 0.628319 Oe
  • 100 A/m ≈ 1.256637 Oe

Multiply the number of amperes per meter by about 0.0125664 to get oersteds. The factor follows from exact definitions. It has more digits than fit here, so it is shown rounded.

Sources: Ampere per meter: SI Brochure, 9th edition (2019). Oersted: NIST SP 811 (2008), Appendix B.9.

Limitations

  • Converts magnetic field strength (H) only. It does not convert to flux density (tesla or gauss).

FAQs

Q: How do I convert A/m to oersteds?
A: Enter the value, choose A/m as the From unit and oersteds as the To unit. The result and the other units in the list update immediately. To go the other way, swap the two units.
Q: What is an oersted?
A: The oersted is the CGS unit of magnetic field strength (H). One oersted corresponds to 1000/(4 pi) amperes per meter, which is about 79.577 A/m.
Q: Is the oersted the same as the gauss?
A: No. The oersted measures magnetic field strength (H) and the gauss measures magnetic flux density (B). In vacuum they have the same numeric value, but they are different quantities.

Explore Similar Tools

Explore more tools like this one: