Home / Paddleboard size by weight / 100 lb
100 lb · 45 kg · 33 boards checked
Paddleboard size for a 100 lb rider
A one hundred-pound beginner needs about 100–140 litres of board: iRocker's rule gives 100–113 L and Alpkit's 110–140 L, overlapping at 110–113 L. iRocker's chart puts this weight on a board 9' to 10'6" long and 31–32 in wide.
- 1Smallest listed board ISLE Grom 2
- 2Volume, beginner 100–140 L
- 3Rider 100 lb · 45 kg
- 4iRocker width 31–32 in
Volume for a one hundred-pound paddler
| Rule | How it is worked | Litres |
|---|---|---|
| iRocker | 45 kg × 2.2 to 2.5 | 100–113 L |
| Alpkit, beginner | 100 lb × 1.1 to 1.4 | 110–140 L |
| Alpkit, experienced | 100 lb × 0.9 to 1.1 | 90–110 L |
| iRocker, with 30 lb of gear | kg rule plus 20–30 L | 120–143 L |
| Beginner, both brands | both agree on 110–113 L | 100–140 L |
Rules read for a one hundred-pound (forty-five-kilogram) rider: Best size paddle board for beginners (11 Mar 2026); What size SUP do I need? (6 Jul 2025). Last checked 2026-10-20.
Length, width and thickness at one hundred pounds
iRocker's chart puts a one hundred-pound rider in its "Under 140 lb" band (rider height Under 5'6"): a board 9' to 10'6" long, 31–32 inches wide and 5–6 inches thick. Neighbouring weights sit in the same band, so the shape does not change here; the volume does. Alpkit adds that height is secondary: weight matters far more.
Boards that carry one hundred pounds
iRocker's advice is to stay 10 to 15% below a board's stated maximum. Of the 33 boards listed from Red Paddle Co, ISLE and Alpkit, 33 keep a one hundred-pound rider at least 10% under their maximum; the lowest-rated of them is the ISLE Grom 2. None is rated below 100 lb.
| Board | Length | Rider max | Load share | Verdict |
|---|---|---|---|---|
| ISLE Grom 2 | 8'6" | 140 lb | 71% | Clear of both margins |
| ISLE Classic Surf 9'0" | 9'0" | 185 lb | 54% | Clear of both margins |
| ISLE Pioneer Pro 9'6" | 9'6" | 195 lb | 51% | Clear of both margins |
| Red Paddle Co 10'2" Ride | 10'2" | 90 kg | 50% | Clear of both margins |
| Red Paddle Co 11'0" Sport | 11'0" | 90 kg | 50% | Clear of both margins |
| ISLE Classic Surf 9'6" | 9'6" | 200 lb | 50% | Clear of both margins |
| ISLE Versa 10'5" | 10'5" | 215 lb | 47% | Clear of both margins |
| ISLE Switch Compact | 10'6" | 220 lb | 45% | Clear of both margins |
| Red Paddle Co 10'6" Ride | 10'6" | 100 kg | 45% | Clear of both margins |
| Alpkit Delta 8'10" | 8'10" | 100 kg | 45% | Clear of both margins |
| ISLE Cruiser | 10'6" | 235 lb | 43% | Clear of both margins |
| Red Paddle Co 11'3" Sport | 11'3" | 110 kg | 41% | Clear of both margins |
| Red Paddle Co 12'6" Sport | 12'6" | 110 kg | 41% | Clear of both margins |
| Red Paddle Co 12'0" Voyager | 12'0" | 110 kg | 41% | Clear of both margins |
| ISLE Glider | 10'10" | 254 lb | 39% | Clear of both margins |
| Red Paddle Co 10'8" Ride | 10'8" | 120 kg | 38% | Clear of both margins |
| Red Paddle Co 14'0" Sport | 14'0" | 120 kg | 38% | Clear of both margins |
| ISLE Outpost | 10'6" | 265 lb | 38% | Clear of both margins |
| ISLE Versa 11'2" | 11'2" | 275 lb | 36% | Clear of both margins |
| ISLE Pioneer 3 | 10'6" | 285 lb | 35% | Clear of both margins |
| ISLE Voyager | 11'6" | 285 lb | 35% | Clear of both margins |
| Alpkit Longshore 10'6" | 10'6" | 135 kg | 34% | Clear of both margins |
| ISLE Pioneer Pro 10'6" | 10'6" | 300 lb | 33% | Clear of both margins |
| ISLE Explorer 3 | 11'6" | 300 lb | 33% | Clear of both margins |
| Red Paddle Co 12'6" Voyager | 12'6" | 150 kg | 30% | Clear of both margins |
| Red Paddle Co 14'0" Voyager | 14'0" | 150 kg | 30% | Clear of both margins |
| Alpkit Delta 10'10" | 10'10" | 150 kg | 30% | Clear of both margins |
| Alpkit Longshore 12'6" | 12'6" | 150 kg+ | 30% | Clear of both margins |
| ISLE Pioneer Pro 11'6" | 11'6" | 350 lb | 29% | Clear of both margins |
| ISLE Explorer Pro 12'0" | 12'0" | 350 lb | 29% | Clear of both margins |
| ISLE Explorer Pro 14'0" | 14'0" | 375 lb | 27% | Clear of both margins |
| ISLE Switch 2 | 11'6" | 425 lb | 24% | Clear of both margins |
| ISLE Switch Pro | 11'6" | 475 lb | 21% | Clear of both margins |
Board figures: What size paddle board do I need? 2025 guide (kg); ISLE paddle board size and weight chart (lb, its recommendation for beginner riders); What size SUP do I need? (6 Jul 2025) (kg).
Either side of one hundred pounds
A one hundred twenty-pound beginner reads 120–168 L.
For a one hundred-pound rider these are the brands' published rules and ratings; the board's own maximum is the limit that counts. Wear a leash and a buoyancy aid. See the methodology.
Other gear for a one hundred-pound rider
- Snowboard length for 100 lb
- Kayak capacity for 100 lb
- Ski size by height
- Bike size by height
- Backpack size by trip length
Weights near one hundred pounds
120 lb · 140 lb · 160 lb · all weights
Guide: weight capacity and gear on the water · size every category at once