PPM to GPG Calculator: In the United States, water hardness is commonly express using two units of measurement ppm to gpg.
ppm (parts per million)
gpg (grains per gallon)
Parts per million, often referred to as American degrees, represents the concentration of a specific substance in water. For water hardness, it signifies the presence of 1 milligram of calcium carbonate (CaCO3) dissolved in one liter of water.
On the other hand, grains per gallon is another unit used to quantify water hardness. It is defined as the amount of calcium carbonate (CaCO3) equivalent to 1 grain, dissolved in one gallon of water.
Useful Resources for PPM to GPG Conversion
- PPM to GPG Water Hardness Calculator: This calculator simplifies the process of converting water hardness from (PPM) to (GPG). By inputting the PPM value, users can quickly determine the equivalent GPG measurement. The calculator ensures accurate results, making it a valuable tool for water quality assessments and treatment.
- PPM to GPG Water Hardness Chart: Covering a range from 1 to 1000 PPM, the chart categorizes water hardness levels.
- soft (0-60 PPM), moderately hard (61-120 PPM), hard (121-180 PPM) and very hard (181+ PPM) . This chart facilitates easy identification of water hardness levels for different applications.
Formula PPM to GPG Calculator
GPG = PPM / 17.118
Variables:
- GPG is the Grains Per Gallons
- PPM is the parts per million
To calculate Grains Per Gallon, divide the parts per million by 17.118
| Image | Product | Details | Coupon Code | Price |
|---|---|---|---|---|
 |
SALT-BASED WATER SOFTENER Springwell Water Whole House |
Type: Ion Exchange Grain Capacity: 32,000 – 80,000 grains Flow Rate: 11 – 20 GPM Warranty: Lifetime |
MHWT5 | Check Price |
 |
SALT-FREE WATER SOFTENER Kind Water Systems Whole House |
Type: Template Assisted Crystallization Grain Capacity: N/A Flow Rate: 15 GPM Warranty: Lifetime |
MHWT5 | Check Price |
Water Hardness PPM to GPG conversion chart table:
| Parts Per Million (PPM) | Grains Per Gallon (GPG) |
|---|---|
| 1 PPM | 0.06 GPG |
| 2 PPM | 0.12 GPG |
| 3 PPM | 0.18 GPG |
| 4 PPM | 0.23 GPG |
| 5 PPM | 0.29 GPG |
| 6 PPM | 0.35 GPG |
| 7 PPM | 0.41 GPG |
| 8 PPM | 0.47 GPG |
| 9 PPM | 0.53 GPG |
| 10 PPM | 0.58 GPG |
| 15 PPM | 0.88 GPG |
| 20 PPM | 1.17 GPG |
| 25 PPM | 1.46 GPG |
| 30 PPM | 1.75 GPG |
| 35 PPM | 2.04 GPG |
| 40 PPM | 2.34 GPG |
| 45 PPM | 2.63 GPG |
| 50 PPM | 2.92 GPG |
| 55 PPM | 3.21 GPG |
| 60 PPM | 3.51 GPG |
| 65 PPM | 3.80 GPG |
| 70 PPM | 4.09 GPG |
| 75 PPM | 4.38 GPG |
| 80 PPM | 4.67 GPG |
| 85 PPM | 4.97 GPG |
| 90 PPM | 5.26 GPG |
| 95 PPM | 5.55 GPG |
| 100 PPM | 5.84 GPG |
| 110 PPM | 6.43 GPG |
| 120 PPM | 7.01 GPG |
| 130 PPM | 7.59 GPG |
| 140 PPM | 8.18 GPG |
| 150 PPM | 8.76 GPG |
| 160 PPM | 9.35 GPG |
| 170 PPM | 9.93 GPG |
| 180 PPM | 10.52 GPG |
| 190 PPM | 11.10 GPG |
| 200 PPM | 11.68 GPG |
| 250 PPM | 14.60 GPG |
| 300 PPM | 17.53 GPG |
| 310 PPM | 18.11 GPG |
| 320 PPM | 18.69 GPG |
| 330 PPM | 19.28 GPG |
| 340 PPM | 19.86 GPG |
| 350 PPM | 20.45 GPG |
| 360 PPM | 21.03 GPG |
| 370 PPM | 21.61 GPG |
| 380 PPM | 22.20 GPG |
| 390 PPM | 22.78 GPG |
| 400 PPM | 23.37 GPG |
| 450 PPM | 26.29 GPG |
| 500 PPM | 29.21 GPG |
| 550 PPM | 32.13 GPG |
| 600 PPM | 35.05 GPG |
| 650 PPM | 37.97 GPG |
| 700 PPM | 40.89 GPG |
| 750 PPM | 43.81 GPG |
| 800 PPM | 46.73 GPG |
| 850 PPM | 49.66 GPG |
| 900 PPM | 52.58 GPG |
| 950 PPM | 55.50 GPG |
| 1000 PPM | 58.42 GPG |
You can use this chart to quickly find the equivalent GPG value for a given PPM measurement of water hardness.
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