1韦伯为一匝线圈其磁通量在1秒内均匀递减至零而产生1伏特电动势之磁通量。[2] [3]

韦伯可以用不同单位的乘积来表示

W

b

=

k

g

⋅

m

2

s

2

⋅

A

=

V

⋅

s

=

H

⋅

A

=

T

⋅

m

2

=

J

A

=

J

⋅

s

Q

=

10

8

M

x

{\displaystyle \mathrm {Wb} ={\dfrac {\mathrm {kg} \cdot \mathrm {m} ^{2}}{\mathrm {s} ^{2}\cdot \mathrm {A} }}=\mathrm {V} \cdot \mathrm {s} =\mathrm {H} \cdot \mathrm {A} =\mathrm {T} \cdot \mathrm {m} ^{2}={\dfrac {\mathrm {J} }{\mathrm {A} }}={\dfrac {\mathrm {J} \cdot \mathrm {s} }{\mathrm {Q} }}=10^{8}\mathrm {Mx} }

其中

Wb = 韦伯,

V = 伏特,

T = 特斯拉,

J = 焦耳,

m = 公尺,

s = 秒,

A = 安培,

Q = 库伦,

H = 亨利,

Mx = 马克士威.