TechTools

Magnetic Field Strength Converter

From
To
Sig. figures:

Ampere per metre

A/m

79.5775

Milliampere per metre

mA/m

79577.5

Kiloampere per metre

kA/m

0.0795775

Megaampere per metre

MA/m

0.0000795775

Ampere per centimetre

A/cm

0.795775

Ampere per millimetre

A/mm

0.0795775

Ampere per inch

A/in

2.02127

Oersted

Oe

1(input)

Millioersted

mOe

1000

Gilbert per centimetre

Gb/cm

1

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Convert H-field across 10 units: SI (A/m, mA/m, kA/m, MA/m, A/cm, A/mm, A/in) and CGS (oersted = 1000/(4π) A/m ≈ 79.577 A/m, millioersted, gilbert/cm). Reference: Earth's H ≈ 8–56 A/m; relay coil 100–10,000 A/m. H = NI/L. 100% browser-based.

How to Use

  1. 1Type an H-field value (e.g. 1 for 1 oersted)
  2. 2Select your starting unit (e.g. oersted, A/m, kA/m, A/cm)
  3. 3Select your target unit - the result appears instantly
  4. 4All 10 conversions appear across SI and CGS groups
  5. 5Hover any row to copy or use as input; click ⇄ to swap
  6. 6Open 'Magnetic field strength reference' for Earth's field and electromagnet values

Features

  • 10 H-field units: A/m, mA/m, kA/m, MA/m, A/cm, A/mm, A/in, oersted, millioersted, gilbert/cm
  • Groups: SI, CGS
  • Reference: Earth's field, MRI coil, relay coil, ferrite saturation
  • Adjustable significant figures and scientific notation toggle
  • One-click copy per result
  • 100% browser-based

Frequently Asked Questions

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