Ppm CaCO₃ to milliequivalents per liter
Type a value in ppm to get it in meq/L instantly.
2.997meq/L
That's 1.67× as hard as moderately hard water, while hard water is 1.2× harder. That counts as hard water: expect limescale in kettles and showers.
What it means
How hard is that water?
All scales measure the same thing, calcium carbonate content, just with different sized degrees.
The math
How to convert ppm to meq/L
To convert ppm CaCO₃ to milliequivalents per liter, multiply by 0.0199827.
Example: 150 ppm × 0.0199827 = 2.9974 meq/L.
In the other direction, 1 meq/L = 50.0434 ppm.
Every unit
Your hardness in every unit
Tables
ppm to meq/L conversion table
| ppm | 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 |
| 150 ppm | 2.9974 meq/L |
| 180 ppm | 3.59688 meq/L |
| 200 ppm | 3.99653 meq/L |
| 250 ppm | 4.99566 meq/L |
| 300 ppm | 5.9948 meq/L |
| 400 ppm | 7.99306 meq/L |
meq/L to ppm conversion table
| meq/L | 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 |
| 150 meq/L | 7,506.51 ppm |
| 180 meq/L | 9,007.81 ppm |
| 200 meq/L | 10,008.7 ppm |
| 250 meq/L | 12,510.9 ppm |
| 300 meq/L | 15,013 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 150 ppm?
- 150 ppm is 2.9974 meq/L.
The units
About these units
Ppm CaCO₃ (ppm)
Milligrams of calcium carbonate per liter, the unit on most water company reports.
Milliequivalents per liter (meq/L)
Used in water chemistry, where calcium carries two charges. One meq/L is 50 ppm.
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