HotTubCalc

Hot tub sizes and water capacity

Find your model to get its water volume in gallons (the number every chemical dose depends on), its dimensions, seating, and how much it weighs full. Search 93 hard-shell and inflatable models, each figure traced to a manufacturer or retailer source.

93 models

Model Type Gallons Dimensions (in) Seats
AquaRest AR-300 Hard-shell 160 81 x 65 x 31 2
AquaRest AR-600 Hard-shell 240 79 x 79 x 32 6
Artesian Grand Cayman Elite Hard-shell 330 91 x 91 x 36 7
Bestway / Lay-Z-Spa St.Lucia AirJet (2-3 person) Inflatable 160 67 dia x 26 H 3
Bestway / Coleman SaluSpa Miami AirJet (2-4 person) Inflatable 177 71 dia x 26 H 4
Bestway / Coleman SaluSpa Cancun AirJet (2-4 person) Inflatable 177 71 dia x 26 H 4
Bestway / Coleman SaluSpa Tahiti AirJet (2-4 person) Inflatable 177 71 dia x 26 H 4
Bestway / Coleman SaluSpa Bahamas AirJet (2-4 person) Inflatable 177 71 dia x 26 H 4
Bestway / Lay-Z-Spa Havana AirJet (2-4 person) Inflatable 177 71 dia x 26 H 4
Bestway / Lay-Z-Spa Bali AirJet LED (2-4 person) Inflatable 177 71 dia x 26 H 4
Bestway / Lay-Z-Spa Vancouver AirJet Plus (3-5 person) Inflatable 213 61 dia x 24 H 5
Bestway / Lay-Z-Spa Paris AirJet (4-6 person) Inflatable 213 77 dia x 26 H 6
Bestway / Coleman SaluSpa Hawaii AirJet (square, 4-6 person) Inflatable 222 71 x 71 x 28 6
Bestway / Coleman SaluSpa Atlantis AirJet (square, 4-6 person) Inflatable 222 71 x 71 x 28 6
Bestway / Lay-Z-Spa Hollywood AirJet (4-6 person) Inflatable 240 77 dia x 26 H 6
Bestway / Lay-Z-Spa Riviera AirJet (4-6 person) Inflatable 240 77 dia x 26 H 6
Bestway / Coleman SaluSpa Honolulu AirJet (4-6 person) Inflatable 242 77 dia x 28 H 6
Bestway / Lay-Z-Spa Palm Springs AirJet (4-6 person) Inflatable 242 77 dia x 28 H 6
Bestway / Lay-Z-Spa Vegas AirJet (4-6 person) Inflatable 247 77 dia x 24 H 6
Bestway / Lay-Z-Spa Maldives HydroJet Pro (5-7 person) Inflatable 277 79 x 79 x 31 7
Bestway / Lay-Z-Spa Helsinki AirJet (5-7 person) Inflatable 297 71 dia x 26 H 7
Bestway / Coleman SaluSpa St. Moritz AirJet (5-7 person) Inflatable 314 85 dia x 28 H 7
Bestway / Lay-Z-Spa Mauritius AirJet (5-7 person) Inflatable 362 107 x 71 x 28 7
Bullfrog A5L Hard-shell 243 84 x 68 x 31 3
Bullfrog A6L Hard-shell 350 80 x 88 x 34 6
Bullfrog X7 Hard-shell 395 88 x 88 x 36 8
Bullfrog A7 Hard-shell 434 88 x 88 x 36 8
Bullfrog X8 Hard-shell 486 94 x 94 x 38 8
Bullfrog A8 Hard-shell 540 94 x 94 x 38 8
Bullfrog M9 Hard-shell 566 94 x 110 x 38 10
Cal Spas Platinum Laguna Hard-shell 425 84 x 84 x 40.5 6
Cal Spas Escape EC-851L (Atlantic) Hard-shell 450 — 6
Caldera Tarino Hard-shell 310 82 x 82 x 33 5
Caldera Marino Hard-shell 360 84 x 84 x 36 6
Caldera Geneva Hard-shell 410 89 x 89 x 38 6
Endless Pools E500 Swim spa 1735 180 x 89 x 58 —
Endless Pools E2000 Swim spa 2350 — —
Essential Hot Tubs Adelaide Hard-shell 300 81 x 81 x 35 6
Essential Hot Tubs Polara Hard-shell 400 85 x 85 x 36 6
Hot Spring Jetsetter Hard-shell 245 84 x 68 x 33 3
Hot Spring Prodigy Hard-shell 270 84 x 78 x 33 5
Hot Spring Sovereign Hard-shell 330 80 x 93 x 33 5
Hot Spring Flair Hard-shell 335 84 x 84 x 36 6
Hot Spring Aria Hard-shell 365 87 x 87 x 36 5
Hot Spring Vanguard Hard-shell 375 87 x 87 x 36 6
Hot Spring Pulse Hard-shell 445 89 x 89 x 38 7
Hot Spring Grandee Hard-shell 455 100 x 91 x 38 7
Intex PureSpa Plus Bubble Massage (4-person, 77in) Inflatable 210 77 dia x 28 H 4
Intex PureSpa Greywood Deluxe (4-person, 77in) Inflatable 210 77 dia x 28 H 4
Intex PureSpa Sahara Tan (4-person, 77in) Inflatable 210 77 dia x 28 H 4
Intex Simple Spa (4-person, 77in) Inflatable 210 77 dia x 26 H 4
Intex PureSpa Plus Bubble Massage (6-person, 85in) Inflatable 290 85 dia x 28 H 6
Intex PureSpa Greywood Deluxe (6-person, 85in) Inflatable 290 85 dia x 28 H 6
Intex PureSpa Sahara Tan (6-person, 85in) Inflatable 290 85 dia x 28 H 6
Intex PureSpa Bubble Massage (6-person, 85in) Inflatable 290 85 dia x 28 H 6
Jacuzzi J-425 Hard-shell 340 76 x 87 x 34 5
Jacuzzi J-235 Hard-shell 360 84 x 84 x 36 6
Jacuzzi J-245 Hard-shell 360 84 x 84 x 36 7
Jacuzzi J-325 Hard-shell 360 84 x 76 x 34 5
Jacuzzi J-335 Hard-shell 360 84 x 84 x 36 5
Jacuzzi J-465 Hard-shell 360 88 x 88 x 39 5
Jacuzzi J-345 Hard-shell 370 84 x 84 x 36 6
Jacuzzi J-LX Hard-shell 390 84 x 84 x 36 7
Jacuzzi J-LXL Hard-shell 390 84 x 84 x 36 7
Jacuzzi J-355 Hard-shell 400 84 x 91 x 38 6
Jacuzzi J-275 Hard-shell 420 90 x 90 x 36.5 6
Jacuzzi J-365 Hard-shell 440 84 x 91 x 38 7
Jacuzzi J-575 Hard-shell 445 91 x 91 x 37.5 6
Jacuzzi J-470 Hard-shell 450 91 x 91 x 39 7
Jacuzzi J-280 Hard-shell 460 90 x 90 x 36.5 7
Jacuzzi J-375 Hard-shell 470 91 x 91 x 38 6
Jacuzzi J-480 Hard-shell 480 94 x 94 x 39 6
Jacuzzi J-385 Hard-shell 500 91 x 91 x 38 7
Jacuzzi J-495 Hard-shell 520 94 x 94 x 39 9
Lifesmart Coronado DLX (LS600DX) Hard-shell 300 81 x 81 x 34 7
Marquis V84 Hard-shell 320 84 x 84 x 36 6
Marquis V94L Hard-shell 445 94 x 94 x 36 7
Master Spas Twilight TS 7.25 Hard-shell 305 84 x 84 x 38 7
Master Spas Twilight TS 8.25 Hard-shell 395 94 x 94 x 38 7
Master Spas Michael Phelps MP Force Deep Swim spa 1935 215 x 94 x 60 —
Master Spas Michael Phelps MP Momentum Deep Swim spa 2325 231 x 94 x 60 —
MSpa Tuscany PM-610S (4-5 person, older) Inflatable 227 64 dia x 27 H 5
MSpa Mono (6-person) Inflatable 245 68 dia x 26 H 6
MSpa Camaro (Premium, 6-person) Inflatable 245 80 dia x 28 H 6
MSpa Aurora (Urban, 6-person) Inflatable 245 80 dia x 28 H 6
MSpa Alpine (Delight, 4-6 person) Inflatable 245 73 x 73 x 27 6
MSpa Tuscany (Frame, 6-person) Inflatable 291 76 x 76 x 29 6
MSpa Oslo (Frame, 6-person) Inflatable 304 71 x 71 x 26 6
Nordic Crown XL Hard-shell 330 84 diameter x 38.5 6
Sundance Spas Edison Hard-shell 345 84 x 84 x 36 7
Sundance Spas Cameo Hard-shell 370 89 x 89 x 37 6
Sundance Spas Optima Hard-shell 410 89 x 89 x 37.5 6
Sundance Spas Aspen Hard-shell 520 110 x 91 x 41.5 6

Gallons are the manufacturer's stated operating volume where available (for some brands that is the average fill, not the brim-full figure). Source and a confidence rating are listed on each model's page. Last updated 2026-06-13.

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How to use these numbers

Your water volume drives every chemical dose, so once you find your model, take its gallons to the dosing calculator (each model page links straight in with the volume filled). A few cautions: seating capacity is the maker's optimistic figure; real fill depends on how high you fill and on seats and footwell; and inflatable capacities are often quoted at the 80 percent fill line. When precision matters, confirm with your own model's manual or a metered fill. No model is listed here without a source.

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