电阻是通过材料通过电流流动的对立。它以欧姆（ω）进行测量。
1 S = 1 ρ
1 ρ = 1 S
例子:
将15 西门子转换为电阻率：
15 S = 15 ρ
| 西门子 | 电阻率 |
|---|---|
| 0.01 S | 0.01 ρ |
| 0.1 S | 0.1 ρ |
| 1 S | 1 ρ |
| 2 S | 2 ρ |
| 3 S | 3 ρ |
| 5 S | 5 ρ |
| 10 S | 10 ρ |
| 20 S | 20 ρ |
| 30 S | 30 ρ |
| 40 S | 40 ρ |
| 50 S | 50 ρ |
| 60 S | 60 ρ |
| 70 S | 70 ρ |
| 80 S | 80 ρ |
| 90 S | 90 ρ |
| 100 S | 100 ρ |
| 250 S | 250 ρ |
| 500 S | 500 ρ |
| 750 S | 750 ρ |
| 1000 S | 1,000 ρ |
| 10000 S | 10,000 ρ |
| 100000 S | 100,000 ρ |
规则