Electric Conductivity Converter
Convert between siemens per meter, microsiemens per centimeter, millisiemens per centimeter, millisiemens per meter and other electrical conductivity units.
Convert electric conductivity
Result
Electric Conductivity units
Every unit below converts to every other one in the calculator. Values are relative to the base unit, the siemens per meter (S/m).
| Unit | Symbol | System | Value |
|---|---|---|---|
| Siemens per meter | S/m | SI | Base unit |
| Siemens per centimeter | S/cm | SI | = 100 S/m |
| Millisiemens per centimeter | mS/cm | SI | = 0.1 S/m |
| Microsiemens per centimeter | µS/cm | SI | = 0.0001 S/m |
| Millisiemens per meter | mS/m | SI | = 0.001 S/m |
Siemens per meter quick reference
| Siemens per meter | Millisiemens per centimeter | Microsiemens per centimeter |
|---|---|---|
| 1 S/m | = 10 mS/cm | = 10000 µS/cm |
| 10 S/m | = 100 mS/cm | = 100000 µS/cm |
| 100 S/m | = 1000 mS/cm | = 1000000 µS/cm |
| 1000 S/m | = 10000 mS/cm | = 10000000 µS/cm |
Among the 5 electric conductivity units on this page, the smallest is the microsiemens per centimeter (µS/cm) and the largest is the siemens per centimeter (S/cm).
More electric conductivity conversions
- Microsiemens per centimeter to Millisiemens per centimeterµS/cm → mS/cm
- Millisiemens per centimeter to Microsiemens per centimetermS/cm → µS/cm
- Siemens per meter to Microsiemens per centimeterS/m → µS/cm
- Microsiemens per centimeter to Siemens per meterµS/cm → S/m
- Millisiemens per centimeter to Siemens per metermS/cm → S/m
- Siemens per meter to Millisiemens per centimeterS/m → mS/cm
About electric conductivity units
Electrical conductivity is a material property: how easily a substance conducts current. It is the reciprocal of resistivity, and its SI unit is the siemens per meter (S/m).
Water quality and agriculture use µS/cm and mS/cm, often reported as EC. 1 mS/cm is exactly 1000 µS/cm and 0.1 S/m. Distilled water has a very low conductivity, tap water is often a few hundred µS/cm, and seawater is roughly 50 mS/cm.
Frequently asked questions
- How do I convert µS/cm to mS/cm?
- Divide by 1000. For example, 1500 µS/cm is 1.5 mS/cm.
- How do I convert µS/cm to S/m?
- Divide by 10,000. One µS/cm is exactly 0.0001 S/m, so 500 µS/cm is 0.05 S/m.
- Can I convert conductivity to TDS (ppm)?
- Only approximately. Meters multiply EC by a conversion factor, commonly between about 0.5 and 0.7, that depends on what is dissolved. It is not a fixed unit conversion.
- How many millisiemens per centimeter are in one siemens per meter?
- One siemens per meter = 10 mS/cm (millisiemens per centimeter).
- How many microsiemens per centimeter are in one siemens per meter?
- One siemens per meter = 10000 µS/cm (microsiemens per centimeter).