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Sep
EC Conversion Chart
EC Conversion Chart
Electrical conductivity (EC) is the ability of a material to transmit (conduct) an electrical current and is commonly expressed in units of milliSiemens per meter (mS/m).
Soil EC measurements may also be reported in units of deciSiemens per meter (dS/m), which is equal to the reading in mS/m divided by 100.
(1 dS/m = 0.01 mS/m)
1 microsiemens [μS] | equals | 0.001 millisiemens [mS] |
10 microsiemens [μS] | equals | 0.01 millisiemens [mS] |
100 microsiemens [μS] | equals | 0.1 millisiemens [mS] |
1000 microsiemens [μS] | equals | 1.0 millisiemens [mS] |
To convert from | To | Multiply by |
μS/cm | mS/cm | 0.001 |
mS/cm | μS/cm | 1000 |
μS/cm | dS/cm | 0.001 |
dS/m | μS/cm | 1000 |
dS/m | mS/cm | 1 |
mho/cm | μS/cm | 1000 |
EC Units | μS/cm | 1 |
For water used for agricultural and irrigation purpose the values for EC and TDS are related to each other and can be converted with an accuracy of about 10% using the following equation:
TDS (mg/l) = 640 x EC (dS/m or mmho/cm or ms/cm).