How do I convert gauss to tesla?

Use the flux density group and convert 1 G = 1×10⁻⁴ T. Enter gauss and read the equivalent tesla and milli-tesla.

How do I convert oersted to A/m?

For magnetic field strength, 1 Oe ≈ 79.5774715 A/m in vacuum. Multiply your oersted value by this factor.

What’s the difference between B and H?

B (tesla/gauss) is magnetic flux density; H (A/m, oersted) is magnetic field strength. They are related by B = μH, and this tool separates the two families of units.

Magnetism Unit Conversions

Convert magnetic units in one place: magnetic flux density (tesla, gauss), magnetic field strength (A/m, oersted), magnetic flux (weber, maxwell) and more. Includes formulas, reference table, and CGS ⇄ SI notes.

Magnetic conversion

Quantity

Value

From unit

To unit

Converted value

0.100000

Converted 1000 G → 0.1 T

Quantity	SI unit	CGS unit	Relation
B – flux density	1 T	10,000 G	1 T = 10⁴ G
H – field strength	1 A/m	1 Oe	1 Oe ≈ 79.577 A/m
Φ – flux	1 Wb	10⁸ Mx	1 Wb = 10⁸ maxwell

Quick reference keeps each quantity in its own family so B and H are never mixed.

How to Use This Converter

Pick the magnetic quantity you need (B for flux density, H for field strength, Φ for magnetic flux), then choose the source and target units that belong to that group. Enter the numeric value you want to convert and click Convert. The result updates immediately in the right-hand card with six significant digits so you can compare values without rounding surprises.

The conversion relies on one consistent base unit per quantity (tesla for B, ampere per metre for H, and weber for Φ) and simply rescales the input and output units through that base value.

Methodology

Values are parsed as decimal numbers and normalized to the base unit, which ensures operations never mix incompatible units. We then divide by the target unit factor and return six-digit precision to match the previous converter experience.

The calculator keeps each quantity separate to prevent mixing B ↔ H conversions when the material permeability is not specified.
Flux density conversions like gauss ↔ tesla are exact scalar multiples, so the output only reflects the input precision.
Field strength uses the constant 1 Oe ≈ 79.5774715 A/m from vacuum definitions.

Results are deterministic and are intended for quick reference; use engineering-grade equipment or standards when precise instrumentation is required.

Full original guide (expanded)

Related converters

Notes

For air/vacuum, oersted ↔ A/m factor ≈ 79.577.
1 tesla is a very strong field: most permanent magnets surface ≈ 0.1–0.6 T.
To convert B ↔ H through a material, specify its permeability and use B = μH.

Audit: Complete · Derived from the original converter plus audit spec data to keep every insight intact.

Formulas

Flux density (B): 1 T = 10,000 G, 1 mT = 0.001 T = 10 G

Field strength (H): 1 Oe = 1000/(4π) A/m ≈ 79.5774715 A/m

Flux (Φ): 1 Wb = 10⁸ Mx

Citations

NIST — Weights and measures — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/weights-and-measures
NIST — SI units — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/owm/metric-si/si-units

Changelog

Version: 0.1.0-draft · Last code update: 2026-01-19

Initial audit spec draft generated from HTML extraction (review required).
Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
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✓ Verified by Ugo Candido Last Updated: 2026-01-19 Version 0.1.0-draft Audit: Complete

Version 1.5.0