| Physical unit | 
| Unit name | Weber | 
| Unit symbol |   | 
| Physical quantity (s) | Magnetic river | 
| Formula symbol |   | 
| dimension |   | 
| system | International system of units | 
| In SI units |   | 
| In CGS units |   | 
| Named after | Wilhelm Eduard Weber | 
| Derived from | Volt , second | 
| See also:  Maxwell | 
The Weber (also: the volt second ) is the unit of measurement of magnetic flux . It was named after Wilhelm Eduard Weber .
 
In the outdated CGS system , Mx ( Maxwell ) is the unit of magnetic flux.
 
Due to the different size systems , however, the difference between the two units is not just one factor (hence the sign ≙ ).