Liquid Chlorine Calculator

    (# jugs/gallons
included in price)
    (1 U.S. Gal. = 128 oz)
Cost / fl. oz:
Great, Good, Fair, Poor, Bad, Horrible © 2013-2019  Daniel Powell

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Current Sales by Store Name

Store$/OZDescriptionEnd DateUser
Napco0.1051 x 128 ounce jugs for $1.68 ($0.105/oz)12/31/2021Napco
Affordable Pool Supp0.1492.5 x 128 ounce jugs for $5.00 ($0.149/oz)12/31/2099anonymous
Farm and Home Supply0.1551 x 128 ounce jugs for $1.19 ($0.155/oz)12/31/2019annonymous
Caribbean Pools0.1564 x 128 ounce jugs for $9.99 ($0.156/oz)12/31/2099anonymous
MVP Services0.1625 x 128 ounce jugs for $13.00 ($0.162/oz)01/01/2099MVP Services
Dollar General0.1741 x 96 ounce jugs for $1.00 ($0.174/oz)12/31/2020Annonymous
Pool and Spa Works0.1761 x 640 ounce jugs for $13.50 ($0.176/oz)01/01/2080 
Rural king0.1764 x 128 ounce jugs for $8.99 ($0.176/oz)12/31/2099DOD996
AM Carson's0.1954 x 128 ounce jugs for $15.99 ($0.195/oz)12/31/2099anonymous
Rural King0.1954 x 128 ounce jugs for $9.99 ($0.195/oz)12/31/2099 
Walmart0.1951 x 128 ounce jugs for $2.50 ($0.195/oz)12/12/2099Al Tuna
Pinch a Penny reward0.2131 x 320 ounce jugs for $7.16 ($0.213/oz)12/31/2020Cypress, TX TFP
Smith Pool0.2182.5 x 128 ounce jugs for $6.99 ($0.218/oz)01/01/9999memTFPool
Walmart0.2301 x 128 ounce jugs for $1.77 ($0.230/oz)12/31/2099anonymous
Ace Swim and Leisure0.2344 x 128 ounce jugs for $14.99 ($0.234/oz)01/01/2099 
Bj0.2344 x 128 ounce jugs for $14.99 ($0.234/oz)12/31/2019Lmr
Home Depot0.23412 x 128 ounce jugs for $35.92 ($0.234/oz)01/01/2020Andy
Home Depot0.2343 x 128 ounce jugs for $8.98 ($0.234/oz)01/01/2110Jimmy123
Home Depot0.2343 x 128 ounce jugs for $8.98 ($0.234/oz)10/01/2019Wobbler
home depote0.234128 x 3 ounce jugs for $8.98 ($0.234/oz)01/01/2020HDX 10%
Menards0.2491 x 128 ounce jugs for $3.99 ($0.249/oz)06/23/2099R.J.
National Pools0.2501 x 640 ounce jugs for $20.00 ($0.250/oz)12/31/2099 
Wal Mart0.2531 x 128 ounce jugs for $2.67 ($0.253/oz)04/25/2020Todd


How do I calculate the effective price of chlorine in bleach or pool chlorine?

Answer: Use the calculator on this page.

What is the formula to calculate the effective price of chlorine if I don't have internet access in the store?

Answer: Use the following formula [Price] / [Units] / [OZ per Unit] / [Chlorine percentage in decimal format (for 8.25% chlorine use 0.0825)]

Is there an easier way to calculate the effective price of chlorine without internet access?

Answer: IF, and ONLY IF the jug size is EXACTLY 121 ounces AND has EXACTLY 8.25% chlorine, you can divide the price by 10 ($1.99 becomes $0.199 per ounce of 100% chlorine). This ONLY works for this combination of jug size and chlorine concentration, and while 0.199/OZ is not the same as 0.19934/OZ, it's close enough.

Can I use bleach for pool chlorine?

Answer: Yes, you can use unscented bleach as a substitute for pool chlorine, using this calculator will allow you to compare the effective chlorine price between different bottle sizes and concentrations of chlorine.

I found bleach on sale, should I buy a year supply?

Answer: No, chlorine has a shelf life. It is recommended to buy no more than a 3 month supply and store it in a cool and dark place.

How do I calculate the price per ounce of 100 percent chlorine when bought in multiple quantities?

Answer: You can calculate that on this page.

How many ounces of chlorine are in a gallon of bleach or jug of pool chlorine?

Answer: Take the ounces times the percentage of chlorine. E.g. a gallon (128 oz) with 8.25% chlorine contains 10.56 ounces of effective chlorine (128 x 8.25% or 128 x 0.0825).

Why am I losing chlorine?

Answer: There are many reasons for losing chlorine, among them are: sunlight; biological matter such as grass, leaves, and swimmers; chlorinated water being splashed out of the pool.

Is bleach the same as other sources of pool chlorine?

Answer: Yes, the active ingredient (chlorine) is the same, however chlorine occurs naturally as a gas as must be bound to another element to be handled by a consumer in a non-gaseous state. The inactive ingredients are what differs between products such as tablets, pellets, granules, or liquid.

Won't bleach in my pool fade my clothes?

Answer: Liquid bleach contains chlorine, and when too high, it can fade clothes. Liquid bleach contains less chlorine than most "Liquid Pool Chlorine" sold at pool stores, and only the concentrated bleach is on par with the pool store product they refer to as "Shock". To summarize, it's no more likely to fade your clothes than any other chlorine additive for pools.

Why should I use bleach or pool chlorine for my pool?

Answer: Liquid chlorine/bleach will change your pool's other chemical balances the least among all chlorine products. If all levels are balanced, it is best to use liquid chlorine/bleach to maintain proper chlorine levels.

However, if your pool is low on Cyanuric Acid (CYA) in any pool, or Calcium Hardness (CH) in a plaster pool, you might consider using other products that also include the other ingredient that you need to raise instead of buying separate products. Be careful when raising CYA or CH, the only reasonable action to reduce either is to remove some of the water and replace it with fresh water that is low in the element you wish to lower.

Why should I not use liquid pool chlorine or bleach?

Answer: If you will not be able to add bleach to your pool daily or raise the free chlorine to higher levels when you anticipate being gone, and you cannot afford an automated drip system to add the liquid bleach, you might want to consider another product. Just remember what those other products add to your pool so you can prepare for a partial drain and refill to keep those levels under control. If going on a trip, a tablet feeder could get you through a week, whereas liquid chlorine/bleach will generally only allow you a 3-4 days away if you raise the FC the shock level and have the proper CYA.

Do I still need to use shock if I switch to liquid chlorine or bleach?

Answer: "Shock" is a process, not a product or weekly routine. Shocking your pool is a method of raising your Free Chlorine to a "Shock Level" and keeping it at that level until the water is crystal clear, the Combined Chlorine is <0.5, and the loss of Free Chlorine over night is less than 1 PPM. If you find that it was a necessary weekly routine to avoid an algae outbreak, then you likely never completed the shock process, your daily chlorine additives are too low, or your CYA is too high which you should account for and raise your Free Chlorine (FC), or lower your Cyanuric Acid (CYA). Shocking your pool should only be done when conditions call for it, such as when you have algae or your Combined Chlorine is >=0.5 PPM.

What is the proper level of chlorine for my pool?

Answer: The appropriate level of chlorine for your pool depends on the CYA level. While CYA protects chlorine from the sun, it also binds to it and makes it less effective at fighting algae and bacteria. Use this chart to determine the correct chlorine level for your pool. Use the PoolMath calculator to determine how much bleach should be added to reach the correct level from the chart.