Parts per million as CaCO₃ to milliequivalents per liter
Type a value in ppm to get it in meq/L instantly.
0.1599meq/L
Nothing on our list is smaller: soft, poorly buffered water is 2.5× higher. That is low: the pH here can swing sharply overnight.
Convert the other way: meq/L to ppm
What it means
How well buffered is it?
Alkalinity is reported as calcium carbonate by convention, even though most of it is really bicarbonate. That convention is what makes the units comparable.
The math
How to convert ppm to meq/L
To convert parts per million as CaCO₃ to milliequivalents per liter, multiply by 0.0199827.
Example: 8 ppm × 0.0199827 = 0.159861 meq/L.
In the other direction, 1 meq/L = 50.0434 ppm.
Every unit
Your alkalinity in every unit
Tables
ppm to meq/L conversion table
| ppm | meq/L |
|---|---|
| 10 ppm | 0.199827 meq/L |
| 20 ppm | 0.399653 meq/L |
| 40 ppm | 0.799306 meq/L |
| 60 ppm | 1.19896 meq/L |
| 80 ppm | 1.59861 meq/L |
| 100 ppm | 1.99827 meq/L |
| 120 ppm | 2.39792 meq/L |
| 143 ppm | 2.85752 meq/L |
| 180 ppm | 3.59688 meq/L |
| 250 ppm | 4.99566 meq/L |
| 400 ppm | 7.99306 meq/L |
meq/L to ppm conversion table
| meq/L | ppm |
|---|---|
| 10 meq/L | 500.434 ppm |
| 20 meq/L | 1,000.87 ppm |
| 40 meq/L | 2,001.74 ppm |
| 60 meq/L | 3,002.6 ppm |
| 80 meq/L | 4,003.47 ppm |
| 100 meq/L | 5,004.34 ppm |
| 120 meq/L | 6,005.21 ppm |
| 143 meq/L | 7,156.21 ppm |
| 180 meq/L | 9,007.81 ppm |
| 250 meq/L | 12,510.9 ppm |
| 400 meq/L | 20,017.4 ppm |
Quick answers
Quick answers
- How many meq/L is 1 ppm?
- 1 ppm is 0.0199827 meq/L.
- How many meq/L is 10 ppm?
- 10 ppm is 0.199827 meq/L.
- How many meq/L is 8 ppm?
- 8 ppm is 0.159861 meq/L.
The units
About these units
Parts per million as CaCO₃ (ppm)
The water treatment and pool standard.
Milliequivalents per liter (meq/L)
The chemist’s unit, and the one reef chemistry calculates in.
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