Microsiemens per centimeter to millisiemens per centimeter
Type a value in µS/cm to get it in mS/cm instantly.
0.5mS/cm
That's about the same as ordinary tap water. That is good drinking water, low in minerals.
What it means
How pure is that water?
A TDS meter does not measure solids. It measures conductivity and multiplies, so anything dissolved that does not conduct — sugar, for instance — is invisible to it.
The math
How to convert µS/cm to mS/cm
A TDS meter multiplies conductivity by a fixed factor: ppm = µS/cm × scale, where the scale is 0.5 for NaCl, 0.64 for hydroponics and 0.7 for 442. The figures below use the scale selected above.
Example: 500 µS/cm = 0.5 mS/cm.
The table below uses NaCl scale (× 0.5).
Every unit
Your reading in every unit
Tables
µS/cm to mS/cm conversion table
| µS/cm | mS/cm |
|---|---|
| 10 µS/cm | 0.01 mS/cm |
| 50 µS/cm | 0.05 mS/cm |
| 100 µS/cm | 0.1 mS/cm |
| 250 µS/cm | 0.25 mS/cm |
| 500 µS/cm | 0.5 mS/cm |
| 800 µS/cm | 0.8 mS/cm |
| 1,000 µS/cm | 1 mS/cm |
| 1,500 µS/cm | 1.5 mS/cm |
| 3,000 µS/cm | 3 mS/cm |
| 10,000 µS/cm | 10 mS/cm |
| 35,000 µS/cm | 35 mS/cm |
mS/cm to µS/cm conversion table
| mS/cm | µS/cm |
|---|---|
| 10 mS/cm | 10,000 µS/cm |
| 50 mS/cm | 50,000 µS/cm |
| 100 mS/cm | 100,000 µS/cm |
| 250 mS/cm | 250,000 µS/cm |
| 500 mS/cm | 500,000 µS/cm |
| 800 mS/cm | 800,000 µS/cm |
| 1,000 mS/cm | 1,000,000 µS/cm |
| 1,500 mS/cm | 1,500,000 µS/cm |
| 3,000 mS/cm | 3,000,000 µS/cm |
| 10,000 mS/cm | 10,000,000 µS/cm |
| 35,000 mS/cm | 35,000,000 µS/cm |
Quick answers
Quick answers
- How many mS/cm is 1 µS/cm?
- 1 µS/cm is 0.001 mS/cm.
- How many mS/cm is 10 µS/cm?
- 10 µS/cm is 0.01 mS/cm.
- How many mS/cm is 500 µS/cm?
- 500 µS/cm is 0.5 mS/cm.
The units
About these units
Microsiemens per centimeter (µS/cm)
Conductivity, which is what the probe actually measures.
Millisiemens per centimeter (mS/cm)
A thousand µS/cm, used in hydroponics and seawater.
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