Water Softener Size Calculator & Which Size You Need?

Last updated on June 26th, 2024

Choosing the right water softener size is essential for ensuring efficient softening of your water supply. Hard water can lead to various issues such as scale buildup in pipes and appliances, reduced soap lathering, and even skin irritation. To assist homeowners in this process, a Water Softener Size Calculator tool has been developed to simplify the selection process.

Water Softener Size Calculator

In this comprehensive guide, we will delve into the intricacies of water softening, explain how the calculator works, and provide insights into selecting the ideal water softener size for your household.

🥇 What Size of Water Softener Do I Need?

Here is a tool that helps you to find the daily grains requirement, regeneration and capacity of water softer you need.

👉 Our Recommended Water Softener in Different Sizes

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Springwell Whole House Water Filter SystemSpringwell Whole House Water Filter SystemCheck Price
springwell Water Filter and Salt-Free FutureSoft SystemSpringwell Water Filter and Salt-Free FutureSoft SystemCheck Price
Springwell Water Filter and Salt Based Water Softener SystemSpringwell Water Filter and Salt Based Water Softener SystemCheck Price
Springwell Well Water Filter and Salt-Free Water SoftenerSpringwell Well Water Filter and Salt-Free Water SoftenerCheck Price
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Our readers get 5% off at springwellwater.com – 👉 Use Code WSSC

📊 Water Softener Grain Chart

Hardness in Grains Per Gallon1 People2 People3 People4 People5 People6 People7 People8 People
1750 Grain1500 Grain2250 Grain3000 Grain3750 Grain4500 Grain5250 Grain6000 Grain
21500 Grain3000 Grain4500 Grain6000 Grain7500 Grain9000 Grain10500 Grain12000 Grain
32250 Grain4500 Grain6750 Grain9000 Grain11250 Grain13500 Grain15750 Grain18000 Grain
43000 Grain6000 Grain9000 Grain12000 Grain15000 Grain18000 Grain21000 Grain24000 Grain
53750 Grain7500 Grain11250 Grain15000 Grain18750 Grain22500 Grain26250 Grain30000 Grain
64500 Grain9000 Grain13500 Grain18000 Grain22500 Grain27000 Grain31500 Grain36000 Grain
75250 Grain10500 Grain15750 Grain21000 Grain26250 Grain31500 Grain36750 Grain42000 Grain
86000 Grain12000 Grain18000 Grain24000 Grain30000 Grain36000 Grain42000 Grain48000 Grain
96750 Grain13500 Grain20250 Grain27000 Grain33750 Grain40500 Grain47250 Grain54000 Grain
107500 Grain15000 Grain22500 Grain30000 Grain37500 Grain45000 Grain52500 Grain60000 Grain
118250 Grain16500 Grain24750 Grain33000 Grain41250 Grain49500 Grain57750 Grain66000 Grain
129000 Grain18000 Grain27000 Grain36000 Grain45000 Grain54000 Grain63000 Grain72000 Grain
139750 Grain19500 Grain29250 Grain39000 Grain48750 Grain58500 Grain68250 Grain78000 Grain
1410500 Grain21000 Grain31500 Grain42000 Grain52500 Grain63000 Grain73500 Grain84000 Grain
1511250 Grain22500 Grain33750 Grain45000 Grain56250 Grain67500 Grain78750 Grain90000 Grain
1612000 Grain24000 Grain36000 Grain48000 Grain60000 Grain72000 Grain84000 Grain96000 Grain
1712750 Grain25500 Grain38250 Grain51000 Grain63750 Grain76500 Grain89250 Grain102000 Grain
1813500 Grain27000 Grain40500 Grain54000 Grain67500 Grain81000 Grain94500 Grain108000 Grain
1914250 Grain28500 Grain42750 Grain57000 Grain71250 Grain85500 Grain99750 Grain114000 Grain
2015000 Grain30000 Grain45000 Grain60000 Grain75000 Grain90000 Grain105000 Grain120000 Grain

⭐ Understanding Water Hardness classification for grain per gallon (GPG):

Water hardness is typically measured in grains per gallon (GPG), with higher GPG values indicating harder water. The table below categorizes water hardness levels based on GPG:

Water Hardness LevelGPG Range
Soft0 – 3
Slightly Hard3 – 7
Moderately Hard7 – 10
Hard10 – 14
Very HardAbove 14

Water Softener Size Calculation: The Water Softener Size Calculator tool simplifies the process of determining the appropriate size of a water softener for your home. It takes into account factors such as the type of water source (city water or well water), the number of persons in the household, and the hardness of the water in GPG.

🏷️ Elaborating on Iron and Manganese Levels:

In addition to water hardness, the presence of iron and manganese can also impact water quality. These minerals, when present in elevated levels, can cause staining, unpleasant odors, and taste issues. Iron and manganese levels are typically measured in milligrams per liter (mg/L) or parts per million (ppm). Here’s how they are categorized:

  • Iron:
    • Acceptable levels: Less than 0.3 mg/L (ppm)
    • Elevated levels: Above 0.3 mg/L (ppm)
    • Iron levels above 0.3 mg/L may require additional treatment methods, such as iron filters or oxidizing agents, to prevent staining and other issues.
  • Manganese:
    • Acceptable levels: Less than 0.05 mg/L (ppm)
    • Elevated levels: Above 0.05 mg/L (ppm)
    • Manganese levels above 0.05 mg/L may result in black or brown staining and can affect water taste and odor.

🤔 How to size a water softeners are made using the provided formulas:

  1. Daily Softening Requirement: Formula: Number of Persons×75×Water Hardness (GPG)Number of Persons×75×Water Hardness (GPG)
  2. Required Total Capacity at Weekly Regeneration: Formula: 7×Number of Persons×75×Water Hardness (GPG)7×Number of Persons×75×Water Hardness (GPG)
  3. Ideal Water Softener Size: Formula: 10×Number of Persons×75×Water Hardness (GPG)10×Number of Persons×75×Water Hardness (GPG)

🚦 What Size Water Softener for Family of 2?

No. of Family MembersWater Hardness in GPGDaily Softening Requirement (Grains)Weekly Regeneration (Grains)Water Softener Size (Grains)
2115010501500
2230021003000
2345031504500
2460042006000
2575052507500
2690063009000
271050735010500
281200840012000
291350945013500
21015001050015000
21116501155016500
21218001260018000
21319501365019500
21421001470021000
21522501575022500
21624001680024000
21725501785025500
21827001890027000
21928501995028500
22030002100030000

🚦 What Size Water Softener for Family of 3?

No. of Family MembersWater Hardness in GPGDaily Softening Requirement (Grains)Weekly Regeneration (Grains)Water Softener Size (Grains)
3122515752250
3245031504500
3367547256750
3490063009000
351125787511250
361350945013500
3715751102515750
3818001260018000
3920251417520250
31022501575022500
31124751732524750
31227001890027000
31329252047529250
31431502205031500
31533752362533750
31636002520036000
31738252677538250
31840502835040500
31942752992542750
32045003150045000

🚦 What Size Water Softener for Family of 4?

No. of Family MembersWater Hardness in GPGDaily Softening Requirement (Grains)Weekly Regeneration (Grains)Water Softener Size (Grains)
4130021003000
4260042006000
4390063009000
441200840012000
4515001050015000
4618001260018000
4721001470021000
4824001680024000
4927001890027000
41030002100030000
41133002310033000
41236002520036000
41339002730039000
41442002940042000
41545003150045000
41648003360048000
41751003570051000
41854003780054000
41957003990057000
42060004200060000

🚦 What Size Water Softener for Family of 5?

No. of Family MembersWater Hardness in GPGDaily Softening Requirement (Grains)Weekly Regeneration (Grains)Water Softener Size (Grains)
5137526253750
5275052507500
531125787511250
5415001050015000
5518751312518750
5622501575022500
5726251837526250
5830002100030000
5933752362533750
51037502625037500
51141252887541250
51245003150045000
51348753412548750
51452503675052500
51556253937556250
51660004200060000
51763754462563750
51867504725067500
51971254987571250
52075005250075000

🚦 What Size Water Softener for Family of 6?

No. of Family MembersWater Hardness in GPGDaily Softening Requirement (Grains)Weekly Regeneration (Grains)Water Softener Size (Grains)
6145031504500
6290063009000
631350945013500
6418001260018000
6522501575022500
6627001890027000
6731502205031500
6836002520036000
6940502835040500
61045003150045000
61149503465049500
61254003780054000
61358504095058500
61463004410063000
61567504725067500
61672005040072000
61776505355076500
61881005670081000
61985505985085500
62090006300090000

FAQs (Frequently Asked Questions):

What is the Water Softener Size Calculator?

The Water Softener Size Calculator is a tool designed to assist homeowners in determining the appropriate size of a water softener based on factors such as water source type, household size, and water hardness.

How do I use the Water Softener Size Calculator?

Simply input the required information, including the type of water source (city water or well water), the number of persons in your household, and the hardness of your water in GPG. The calculator will then provide you with the recommended water softener size.

Why is it important to choose the right water softener size?

Choosing the right water softener size ensures optimal performance and efficiency. An undersized softener may not adequately treat the water, leading to issues such as scale buildup and reduced appliance lifespan. Conversely, an oversized softener may result in wasted water and salt during regeneration cycles.

Can the Water Softener Grains Calculator be used for commercial applications?

While the calculator is primarily designed for residential use, it can still provide a general estimate for small-scale commercial applications. However, for larger commercial or industrial settings, it’s recommended to consult with a water treatment specialist.

How often should I regenerate my water softener?

The frequency of regeneration depends on factors such as water usage and hardness levels. Typically, most water softeners are programmed to regenerate every 7 days, but adjustments may be needed based on your specific requirements.

💡 Conclusion:

Selecting the right water softener size is crucial for maintaining water quality and preventing issues associated with hard water. By utilizing the Water Softener Size Calculator and understanding the calculations involved, homeowners can make informed decisions to ensure their water softening system meets their needs effectively.