Hot Tub & Spa Volume Calculator
Estimate the gallons in any hot tub or spa.
Result
Gallons
1100 gal
Liters
4162 L
Typical capacity
250–500 gal for most spas
About this tool
Pick the tub shape, type dimensions, and get the volume in gallons and liters plus the bromine/chlorine dose. The r/hot tubs and r/spas 'how many gallons in my hot tub' canonical answer.
Related tools
More home & diy you might find useful.
Other categories
Looking for something different? Browse the rest of the catalog.
Calculators
Crunch the numbers.
Generators
Generate anything.
Formatters
Tidy up text.
Checkers
Verify anything.
Converters
Switch units fast.
Trackers
Stay on schedule.
SEO
Rank smarter.
Engineering
Build smarter.
YouTube
Grow your channel.
Gaming
Play sharper.
Music
Mix it right.
Investing
Invest smarter.
Health & Fitness
Live stronger.
Travel
Travel smarter.
Productivity & Lifestyle
Decide faster.
Photography
Sharper images.
Cars
Save on cars.
Sponsored suggestions
- Like this site? You'll love our weekly newsletter
One new tool, one fresh Reddit pain point, every Friday. No spam.
Some links below are affiliate links. We may earn a commission if you purchase through them, at no extra cost to you.