Popular conversions
1 pairsWeber ↔ Milliweber
Wb ↔ mWb
Unit guides
2 unitsDetailed guide to this category
Magnetic flux measures the total magnetic field passing through a given surface.
The weber is the SI derived unit, fundamental to transformer and induction calculations.
- Physical quantity
- Magnetic flux
- SI unit
- Weber
- Typical use
- Transformer and induction engineering
What is magnetic flux?
Magnetic flux quantifies the total magnetic field passing through a surface area.
It is central to transformer design, electromagnetic induction and electric motor engineering.
What magnetic flux measures
Magnetic flux describes the amount of magnetic field passing through a surface. It depends on field strength, surface area and the surface orientation relative to the field.
It is used in transformers, generators, inductors and electromagnetic induction calculations.
Webers and milliwebers
The weber is the SI unit of magnetic flux and is equivalent to a volt-second. Milliwebers are convenient for smaller magnetic circuits and instrument readings.
Use the stated area and field conditions when interpreting a flux value; flux is not the same as magnetic field strength or flux density.
Unit comparison table
| Unit | Symbol | SI equivalent | System | Common use |
|---|---|---|---|---|
| Weber | Wb | 1 Wb = 1 V·s | SI derived unit | Transformers, generators and magnetic circuits |
| Milliweber | mWb | 1 mWb = 0.001 Wb | SI prefix | Small magnetic circuits and instruments |
Units
| Unit | Symbol | Information |
|---|---|---|
| Weber | Wb | View unit guide |
| Milliweber | mWb | View unit guide |