How Much Does a Hot Tub Weigh?
Empty, full, and by tub type, for removal and disposal
A hard-shell hot tub weighs 400 to 1,000 pounds empty, depending on size. Fill it and that jumps to 3,000 to 5,000 pounds, since the water alone runs 8.34 pounds a gallon. You drain a tub before you move it, so the empty weight is what decides how you haul it. The concrete pad underneath, though, is usually the heavier problem.
Hot tub weight at a glance
Empty figures are for standard acrylic hard-shell tubs. Rotomolded, wood, and inflatable tubs weigh less; see the tables below.
Hot tub weight by size
Size drives the number, and the water drives the jump between empty and full. A hard-shell tub carries an acrylic shell, a foam-insulated cabinet, and a pump pack, which is where the 400 to 1,000 pound dry range comes from. Fill it and you add 8.34 pounds for every gallon. These figures are for the tub full of water; add about 185 pounds per bather when it's in use.
| Size | Empty | Water | Full of water |
|---|---|---|---|
| Small (2–3 person) | ~400 lbs | ~200 gal | ~2,100 lbs |
| Medium (4 person) | ~600 lbs | ~300 gal | ~3,100 lbs |
| Large (5–6 person) | ~800 lbs | ~375 gal | ~3,900 lbs |
| Extra large (7–8 person) | ~1,000 lbs | ~475 gal | ~5,000 lbs |
| Swim spa | 2,500–4,500 lbs | 1,300–2,000 gal | 15,000+ lbs |
Weight by tub type
Construction changes the empty weight far more than a couple of seats do. Acrylic hard-shell tubs are the heavy standard. Rotomolded plastic tubs are lighter because the shell and cabinet are one molded piece. Wood-fired cedar tubs land in between. Inflatables are the outlier, light enough for one person to carry empty.
| Tub type | Empty weight |
|---|---|
| Inflatable | 50–80 lbs |
| Rotomolded (plug-and-play plastic) | 200–500 lbs |
| Wood (cedar barrel) | 350–650 lbs |
| Acrylic hard-shell | 400–1,000 lbs |
| Swim spa | 2,500–4,500 lbs |
Don't forget the cover. A dry hard-shell cover weighs 35 to 75 pounds, but a waterlogged one that's been soaking up rain for a season can hit 100 pounds or more. Pull it first; it's the one part a single person can wrestle off, and it saves your back before the real work starts.
The pad is the weight, not the tub.
A drained tub is bulky but light, and it fills a dumpster by volume. The concrete pad under it is the trap. A 4-inch pad the size of the tub can run 2,000 to 5,000 pounds on its own, enough to overweight a debris dumpster before the container looks half full. If you're taking the pad too, keep it out of the tub load and give it its own heavy-debris container or a run to a concrete recycler.
What this means when you rent a dumpster
Drain the tub first. That step alone removes 2,500 to 4,000 pounds of water, and it's why the filled weight never matters for hauling. What's left is a shell, foam insulation, a wood or composite cabinet, and a pump pack. Cut up, that debris is volume-limited: it fills a container's space long before it troubles the weight cap.
A drained hard-shell tub cut into pieces fits comfortably in a 10 or 15-yard dumpster. Use a reciprocating saw with a carbide-tipped blade for the acrylic and fiberglass; a standard wood blade dulls fast on the shell. The foam is messy and gets everywhere, so bag it as you go. We recommend cutting the tub apart where it sits rather than trying to move it whole. An 800-pound shell dragged across a yard and through a gate is how people wreck their backs and their fences.
If the tub still runs, think twice before you demolish it. A working hot tub has real give-it-away value; post it free-for-you-haul on Facebook Marketplace and someone shows up with a trailer and a crew. We wouldn't pay to cut up and bury a tub that somebody else would carry off for nothing. Demolition is for the cracked, dead, or leaking units.
Then there's the pad. Most hot tubs sit on a concrete slab, and that slab is the weight-limited half of the job. If you're pulling it, size it separately from the tub debris. Our hot tub removal calculator flags a split load once the concrete crosses about 5,000 pounds, routing the pad to a small heavy-debris container while the tub rides in a standard one. Mixing the two is the fast way to an overage fee. For the full teardown, from draining and cutting the shell to handling the pad, see our DIY hot tub removal guide.
Reference Sources
Dry weights and water capacities come from manufacturer specifications for common residential spas. A 6-person Hot Spring Revive, for example, lists an 830-pound dry weight, 345 gallons, and a filled weight near 4,760 pounds, which lines up with the size table above. The full-of-water figures are the dry weight plus the water, calculated at 8.34 pounds per gallon.
- Dry weight and water capacity: Hot Spring Spas and the Jacuzzi Dimension & Specification Handbook, manufacturer specs for residential hot tub weight and gallon capacity.
- Water weight: the U.S. Geological Survey Water Science School puts a gallon of water at 8.34 pounds, the basis for the full-of-water math.
- Concrete pad weight: see our concrete weight guide for the slab under the tub, at about 150 pounds per cubic foot.
Related Pages
Know the weights; now size the container. These tools do the disposal math for a hot tub removal and the pad that comes with it.
Common questions
How much does a hot tub weigh empty?
About 400 pounds for a small hard-shell tub, up to 1,000 for a 7 to 8 person model. A typical 5 to 6 person tub runs near 800 pounds dry. Rotomolded plastic and inflatable tubs weigh much less. You drain the tub before removal, so this dry weight is the one that decides how you haul it.
How much does a hot tub weigh full of water?
Between 3,000 and 5,000 pounds for a standard hard-shell tub. Water weighs 8.34 pounds per gallon, and a 6 person tub holds 300 to 450 gallons, adding 2,500 to 3,800 pounds to the dry weight. Add about 185 pounds per bather in use. That load is why a filled tub needs a reinforced deck or a concrete pad.
How much does an inflatable hot tub weigh?
Only 50 to 80 pounds empty. Filled is another story: the same tub holds 200 to 250 gallons, so it weighs well over 2,000 pounds in use. The vinyl shell packs down small for disposal and doesn't need a dumpster, but the deck or ground under it still carries the full filled load.
Do I need a heavy-debris dumpster to remove a hot tub?
Not for the tub itself. A drained, cut-up tub is bulky but light, so it fills a container by volume, not weight. The concrete pad is the weight problem; a 4-inch pad can run 2,000 to 5,000 pounds, enough to overweight a debris dumpster. Route the pad to its own heavy load or a concrete recycler.
How much does a swim spa weigh?
Around 2,500 to 4,500 pounds empty, and 15,000 or more filled. A swim spa holds 1,300 to 2,000 gallons, several times a standard hot tub. It almost always needs a structural concrete pad and professional equipment to move, drained or not.
Disclaimer: These weights are estimates for common residential hot tubs. Actual dry weight and water capacity vary by brand, model, and shell material, so check your unit's spec sheet for exact figures. Full-of-water weights assume the tub is filled to its rated capacity. For removal, confirm dumpster sizing and weight limits with your hauler, especially if a concrete pad is part of the job. This is general information, not professional or legal advice. See the Terms of Use for full terms and disclaimers.