Conversion method
Magnetic flux per area B. Tesla and gauss convert directly; H in A/m requires permeability and belongs to a separate converter.
G = x × 10000
10 T = 100000 G.
| T | G |
|---|---|
| 1 | 10000 |
| 5 | 50000 |
| 10 | 100000 |
| 25 | 250000 |
| 50 | 500000 |
| 100 | 1000000 |
Unit definitions and sources
Magnetic flux per area B. Tesla and gauss convert directly; H in A/m requires permeability and belongs to a separate converter.
| Unit and system | Use | Definition | Relationship |
|---|---|---|---|
| Tesla (T); si | Common units | Tesla: base (t) = value × 1. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Gauss (G); si | Common units | Gauss: base (t) = value × 0.0001. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Millitesla (mT); si | Specialist units | Millitesla: base (t) = value × 0.001. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Microtesla (µT); si | Specialist units | Microtesla: base (t) = value × 1e-06. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Nanotesla (nT); si | Specialist units | Nanotesla: base (t) = value × 1e-09. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Exatesla (ET); si | Specialist units | exatesla: E denotes 10^18; the unit gives 1000000000000000000 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Petatesla (PT); si | Specialist units | petatesla: P denotes 10^15; the unit gives 1000000000000000 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Teratesla (TT); si | Specialist units | teratesla: T denotes 10^12; the unit gives 1000000000000 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Gigatesla (GT); si | Specialist units | gigatesla: G denotes 10^9; the unit gives 1000000000 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Megatesla (MT); si | Specialist units | megatesla: M denotes 10^6; the unit gives 1000000 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Kilotesla (kT); si | Specialist units | kilotesla: k denotes 10^3; the unit gives 1000 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Hectotesla (hT); si | Specialist units | hectotesla: h denotes 10^2; the unit gives 100 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Decatesla (daT); si | Specialist units | decatesla: da denotes 10^1; the unit gives 10 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Decitesla (dT); si | Specialist units | decitesla: d denotes 10^-1; the unit gives 0.1 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Centitesla (cT); si | Specialist units | centitesla: c denotes 10^-2; the unit gives 0.01 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Picotesla (pT); si | Specialist units | picotesla: p denotes 10^-12; the unit gives 1e-12 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Femtotesla (fT); si | Specialist units | femtotesla: f denotes 10^-15; the unit gives 1e-15 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Attotesla (aT); si | Specialist units | attotesla: a denotes 10^-18; the unit gives 1e-18 t. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Weber/square meter (Wb/(m²)); other | Specialist units | weber/square meter = 1.0 t, derived from the component SI/customary definitions. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Weber/square centimeter (Wb/(cm²)); other | Specialist units | weber/square centimeter = 10000.0 t, derived from the component SI/customary definitions. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
| Weber/square inch (Wb/(in²)); other | Specialist units | weber/square inch = 1550.0031000062002 t, derived from the component SI/customary definitions. Common use: Magnetic Flux Density. Source checked 2026-09-20 (implementation review). | Exact definition; numerical display may be rounded |
Sources: NIST: SP 811 Appendix B.8: conversion factors; BIPM: SI prefixes
Precision of magnetic flux density conversions
All 21 magnetic flux density units convert through Tesla (T). 21 have an exact defined relationship to the base unit and 0 are conventional or measured values. Results and the tables on this page come from the same engine, so a table value can be checked against the converter directly.
Standard display shows up to six decimal places, switching to scientific notation for very large or small values. Calculation uses JavaScript binary floating point independently of display rounding, so extra digits are not a claim about measurement accuracy. Each unit lists its own source; a citation records where the definition comes from, not an independent review. See Conversion methodology for the review and correction process.