Free Water Softener Size Calculator
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Average: 75 gal
📋 Water Softener Sizing
- Daily Grains: People × Gallons × Hardness
- Weekly: Daily × 7
- Recommended: Weekly × 1.5
❓ Water Softener FAQ
What size water softener do I need?
P × 75 × H × 7 × 1.5. Size = P×75×H×7×1.5. Family of 4 at 10 grain = 48,000.
How many grain for family of 4?
4×75×10×7×1.5 = 31,500 grains. Choose 48,000 grain unit.
What is water hardness measured in?
Grains per gallon (gpg). Soft: 0-3, Hard: 7-10, Very Hard: 10+.
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