NS
Magnetics Reference Tool
Magnet Unit Converter
Input
Converted
1 MGOe = 7.957747 kJ/m³ · 1 Oe = 79.5774715 A/m · click any value to copy

FAQs

What's the difference between Gauss and Tesla?

Both measure magnetic flux density (B). Gauss (G) is the CGS unit, Tesla (T) is the SI unit. 1 Tesla = 10,000 Gauss, so Gauss is simply the smaller, more granular unit — commonly used in magnet datasheets, while Tesla shows up more in scientific/SI contexts.

How do I convert Gauss to Tesla?

Divide by 10,000: Gauss ÷ 10,000 = Tesla. For example, 5,000 Gauss = 0.5 Tesla. You can also work in kilogauss (kG), where 1 kG = 0.1 T.

What is Oersted (Oe) used for, and how does it relate to A/m?

Oersted measures magnetic field strength (H) — it's the CGS unit, while A/m (amperes per meter) is the SI unit. 1 Oersted ≈ 79.577 A/m. Oersted is the unit most commonly seen for coercivity (Hc, Hcj) on magnet datasheets.

Is coercivity measured in the same units as flux density?

No. Coercivity (Hc, Hcj — resistance to demagnetization) is a field-strength quantity, measured in Oe or A/m — the same category as H, not B. Flux density (Br, the magnet's output strength) is measured in Gauss or Tesla. It's a common mix-up, so the converter keeps these as two separate categories.

What does MGOe mean, and how do I convert it to kJ/m³?

MGOe (Mega-Gauss-Oersted) measures the maximum energy product (BH)max — essentially how much magnetic energy a material can store per unit volume, and a good indicator of overall magnet "strength." 1 MGOe ≈ 7.958 kJ/m³. NdFeB magnets typically range from about 30–52 MGOe.

What's the difference between Weber and Maxwell?

Both measure total magnetic flux (Φ), not flux density. Weber (Wb) is the SI unit, Maxwell (Mx) is the CGS unit. 1 Weber = 100,000,000 (10⁸) Maxwell — a huge ratio, which is why Maxwell is used for small-scale/lab measurements and Weber for larger SI-based calculations.

Why do magnet datasheets mix CGS and SI units?

Historically, magnetics engineering grew up in CGS units (Gauss, Oersted, MGOe), and much of the industry — especially permanent magnet manufacturers — never fully switched to SI. Scientific and electrical engineering fields lean SI (Tesla, A/m, kJ/m³). Since both systems are still in everyday use, converting between them is one of the most common tasks when comparing datasheets from different suppliers.

How do I convert magnet pull force between N, kgf, and lbf?

1 kgf = 9.80665 N, and 1 lbf = 4.448 N. Pull force ratings (holding force) are usually listed in kgf or lbf depending on the supplier's region — the converter handles both directions along with gram-force (gf) and ounce-force (ozf).