Multiply the width by the depth by the length of a square or rectangular tub, and divide the resulting figure by 1,728. Multiply the result by 2.4 if the hot tub has seats, or 4.8 if the hot tub doesn't have seats. The result is the approximate amount of gallons the square or rectangular hot tub will hold.
Full Answer
How do I calculate the gallonage of my hot tub?
How do I figure out how many gallons my hot tub is? Calculate the gallon capacity of a hot tub by multiplying the width, length, and depth of the hot tub in inches. Divide the result by 1,728. If the hot tub has seats, multiply the result by 2.4. If not, divide by 4.8. But there are different calculations for non-standard-shaped hot tubs.
How many gallons of water to fill a hot tub?
Timing Filling
- Turn on the water source that you're using to fill the hot tub and place the water hose inside the hot tub. ...
- Write down the amount of time it takes to fill in minutes and seconds.
- Fill a five gallon bucket with the same water source and hose. ...
- Multiply the number of minutes it took to fill the hot tub by 60. ...
How many gallons is a 5 person hot tub?
If you have medium sized space available in your home or backyard, you can get a 5 person hot tub. A 5 person hot tub holds 300 to 350 gallons of water. However, if you have a 5 person hot tub with customized depth, it may hold more gallons of water to get filled and to get to give you a relaxing immersing experience.
How many gallons is that hot tub?
When looking at a four to six-person hot tub, they typically hold between 300 and 450 gallons of water, while a seven to eight-person hot tub will have 475 to 650 gallons. There are many methods of calculating how much water you have in your hot tub. One method is by using a calculator and measuring tape.
How do I figure out how many gallons my hot tub is?
Multiply the diameter by the diameter by the depth of a round hot tub. Divide the resulting figure by 1,728. Multiply the result by 2.4 if the hot tub has seats, or 4.8 if the hot tub doesn't have seats. The result is the approximate amount of gallons the round hot tub will hold.
How many gallons are in a 4 person hot tub?
A typical hot tub for four people holds approximately 300 gallons. Although this may seem like a lot of water to clean and maintain, it can actually last for up to four months at a time before cleaning. Hot tub water consumption ends up being less than 3 gallons per day, or just 1% of your household water.
How much water is in a 7x7 hot tub?
Medium-Large hot tubs like a 7×7 hot tub typically hold about 370 gallons of water.
How many gallons is a 6 person hot tub?
A four to six-person hot tub can typically hold approximately 300 to 450 gallons of water. An eight to seven-person hot tub will have around 475 to 650 gallons.
What size is a 4 person hot tub?
Choosing a Hot Tub Based on SizeHot Tub Size RangesLengthHeightSmall (2-4 people)5'4” - 7”29” - 35”Medium (5-6 people)6'6” - 7'9”33” - 38.5”Large (7+people)7' - 9”36” - 38”Apr 25, 2018
How much does the water in a 6 person hot tub weigh?
There is no single standard hot tub weight. In general, a small two- or three-person hot tub generally weighs around 500 pounds empty and 3,000 pounds when filled with water. A six-person model typically weighs approximately 1,000 pounds empty or 6,000 pounds full.
How many gallons is a 3 person hottub?
The number of gallons of water a 3-person hot tub can hold ranges anywhere between 200 gallons and 300 gallons.
How many gallons does a Jacuzzi tub hold?
The inside measurements of this tub could be 23 inches wide, 15 inches deep to the water level and 54 inches long. This tub holds about 80 gallons of water.
How many Litres is a 7 man hot tub?
3,000 litresWith the popularity of hot tubs on the rise, it's becoming more common for our customers to question their increase in water usage. An average 4 seater hot tub holds about 1,250 litres of water, while a larger 7 seater hot tub will hold around 3,000 litres.
How much does 32 gallons of water weigh?
How Much Does a Gallon of Water Weigh?Temperature ( °F / °C )Weight of One Gallon of WaterWeight of Five Gallons of Water32° / 0°8.34432 lbs41.721598 lbs39.2°/4.0°8.345404 lbs41.72702 lbs40°/4.4°8.345321 lbs41.726605 lbs50°/10°8.343318 lbs41.71659 lbs5 more rows
How much chlorine do I put in a 300 gallon hot tub?
For a 300 gallon spa, 0.7 oz of Chlorine Granules shaken over the water surface, will raise the chlorine level up to about 10 ppm. This should be done with a balanced pH (in the low range of 7.2-7.4), and with the circulation pump running on high to help distribute the shock quickly.
How long does it take to fill a 300 gallon spa?
The average 300 to 400-gallon hot tub will take around 90 minutes to 120 minutes to fill. But getting a garden hose with a larger than 3/4 opening on the filling end can speed that up.
Portable Acrylic-Fiberglass Hot Tubs
Our formulas make it easy because you use the outside dimensions of your portable hot tub cabinet.
In-Ground Hot Tubs, Soft Hot Tubs, & Wooden Hot Tubs
These types have fewer interior water-displacing features, so this formula takes that into account.
How many gallons of water does a 6 person hot tub hold?
You can expect a 6-person hot tub to hold anywhere between 320 gallons to 475 gallons of water . For example, the “Mesa” spa offered by our store can hold between 6-7 people, has up to 50 jets, and holds 380 gallons of water.
How to measure for a round hot tub?
Then multiply the width by length by depth. Divide result by 1,728. For round hot tubs, you will measure the width across the center and the depth.
Measuring a Hot Tubs Capacity
The fastest way of finding a hot tub’s water capacity is by looking up the user’s manual. Most manufacturers should list the specifics of their tub in the manual. But if you lost the manual, or bought it from a second-hand dealer, then you got to calculate it manually.
How Big of a Hot Tub Do You Need?
Shopping for a good hot tub can be challenging for people who have no experience with it. People often get the wrong tub size because they fail to estimate their activity range.
A Rough Estimate on How Many Gallons a Hot Tub Holds by Capacity
As we said, the exact amount of gallons of water your hot tub holds comes down to different factors but you can get a rough estimate just by knowing the capacity. This will give you a starting point to narrow down your calculations.
Six Ways to Determine How Many Gallons Your Hot Tub Will Hold
There are four methods to find out how many gallons your hot tub holds that will require research on your part, and two of the methods are math-based. They could all help you get a closer estimate for your specific model.
Bottom Line
It’s important that you know exactly how many gallons your hot tub holds, especially if you want to install it on a raised deck or patio.
How to figure out how many gallons a round hot tub holds?
Multiply the diameter by the diameter by the depth of a round hot tub. Divide the resulting figure by 1,728. Multiply the result by 2.4 if the hot tub has seats, or 4.8 if the hot tub doesn't have seats. The result is the approximate amount of gallons the round hot tub will hold.
How to calculate how long it takes to fill a hot tub?
Use a stopwatch to time how long it takes to fill. Write down the result in minutes and seconds. Multiply the number of minutes it took to fill the hot tub by 60. Add the number of seconds to the resulting figure for the total amount of seconds it took to fill the entire tub. Multiply the number of minutes it took to fill ...
How to measure the width of a round hot tub?
Measure the width of round hot tubs across the center of the tub and its depth. Multiply the width by the depth by the length of a square or rectangular tub, and divide the resulting figure by 1,728. Multiply the result by 2.4 if the hot tub has seats , or 4.8 if the hot tub doesn't have seats.
How to Figure Out How My Gallons are in a Hot Tub?
There are two tried and tested methods that can determine a hot tub’s true capacity. These methods are timed filled method and dimension calculation method.
The Timed Filled Process
The time filled process involves calculating the amount of time it takes a tub to be filled with a hose. All that’s needed involves filling up your tub with a hose, take note of how long it takes to fill up, calculate the rate of flow of the hose, and you’ll figure out how many gallons will fill the tub.
Method #1 – Fill Time
- The most accurate way to determine the volume of a hot tub, without fancy equipment, is by fill time. First, using a stopwatch or wristwatch time how long it takes to fill your hot tub. Convert minutes and seconds to total seconds, and write it down. Then, using the same hose and pressure, time how many seconds it takes to fill a one gallon bucket....
Method #2 – Dimensional
- The dimensional method is not as accurate as the fill-time method, but is a quicker way to determine the approximate volume of any hot tub.
Portable Acrylic-Fiberglass Hot Tubs
- Our formulas make it easy because you use the outside dimensions of your portable hot tub cabinet. 1. For Square or Rectangular portable acrylic hot tubs: 2. For Round or Multi-sided portable acrylic hot tubs: * Results are estimated volume only. Consult with manufacturer.
In-Ground Hot Tubs, Soft Hot Tubs, & Wooden Hot Tubs
- These types have fewer interior water-displacing features, so this formula takes that into account. 1. For Square or Rectangular types: 2. For Round, Irregular, or Multi-sided types: * Results are estimated volume only. Consult with manufacturer.