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Millisiemens to Siemens

Convert Millisiemens to Siemens and get the exact value instantly.

1 mS = 0.001 S

About this conversion

To convert Millisiemens to Siemens, multiply the number of Millisiemens by 0.001.

Electrical conductance is the inverse of resistance, measured in siemens (once called the mho), with millisiemens and microsiemens common in water-quality and sensor readings.

Conversion table

Millisiemens (mS)Siemens (S)
1 mS0.001 S
2 mS0.002 S
5 mS0.005 S
10 mS0.01 S
100 mS0.1 S

How to use this converter

  1. Enter your Millisiemens value

    Type any number into the Millisiemens field. It starts at 1 so you can read the rate straight away.

  2. Read the Siemens result

    The amount in Siemens updates as you type, so there is no button to press and nothing to wait for.

  3. Swap or keep exploring

    Use the swap control to flip the direction, or pick a related conversion from the list below.

Frequently asked

How many Siemens are in one Millisiemens?
One Millisiemens equals 0.001 S. Enter any amount above to get an exact figure for your own value.
Is this converter accurate?
Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.
Do you upload the numbers I enter?
No. The Millisiemens to Siemens conversion runs entirely in your browser tab, and nothing you type is sent to a server.
Does it work on my phone?
Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.

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