---
title: Physical conventions and units
status: draft
audience: user
owner: fullmag-public-docs
source_of_truth: docs/physics/llg_conventions.md
---

# Physical conventions and units

FullMag uses SI units unless a page explicitly states otherwise. Every interaction page defines
symbols, signs, coordinate orientation, magnetization normalization and assumptions.

| Symbol | Meaning | SI unit |
|---|---|---|
| m | normalized magnetization | dimensionless |
| M | magnetization | A/m |
| M_s | saturation magnetization | A/m |
| H | magnetic field | A/m |
| B | magnetic flux density | T |
| A | exchange stiffness | J/m |
| t | time | s |
| f | frequency | Hz |
| alpha | Gilbert damping parameter | dimensionless |

The project-wide convention is maintained in docs/physics/llg_conventions.md and
docs/physics/0000-physics-documentation-standard.md. Public pages may summarize it, but may not
introduce a second sign or unit convention.