Kayak capacity
Quick answerA 340 lb paddler with 15 lb of day gear needs a recreational kayak rated for at least 510 lb. Add a 40 lb child and it rises to 565 lb; paddle with a 170 lb partner and it is 765 lb. 8 kayaks in our verified catalog state a capacity that high.
| Load | Total | Look for | Minimum (85%) | Boat type |
|---|---|---|---|---|
| Solo, day gear (15 lb) | 355 lb | 510 lb | 420 lb | Wide sit-on-top or 2-person inflatable |
| Solo, overnight gear (50 lb) | 390 lb | 560 lb | 460 lb | Wide sit-on-top or 2-person inflatable |
| With a 40 lb child | 395 lb | 565 lb | 465 lb | Wide sit-on-top or 2-person inflatable |
| With a 60 lb dog | 415 lb | 595 lb | 490 lb | Wide sit-on-top or 2-person inflatable |
| With a 170 lb adult | 535 lb | 765 lb | 630 lb | Tandem (2-person) |
At 340 lb only a handful of recreational kayaks keep you inside the 70 percent rule: two-person and drop-stitch inflatables rated 500 lb or more, and large tandem sit-on-tops. That short list is below, filtered on each listing's own stated capacity. A wide sit-on-top is also easier to get on and off than a sit-in cockpit.
The rule behind the table: divide everything in the boat by 0.7. The maker's rating is the most the hull can float, not what it paddles well with. Use the kayak weight capacity calculator for your exact load.
Filtered on each listing's own stated capacity. Inflatables lead because they are what most people buy and store at home.
Bestway Hydro-Force 12'6" x 39" Rapid X3 Inflatable Kayak Set | Fits Up to 3 Persons | Includes 2 Aluminum Paddles, 1 Hand Pump, 2 Fins, 1 Carry Bag, Repair Patch Kit 12'6" / 551 lb max / 3-person 
Sea Eagle 370 Pro 3 Person Inflatable Sport Kayak with Pro Package Includes Paddles, Deluxe Seats, Pump, and Carry Bag 650 lb max / 3-person 
Perception - Rambler 13.5 Recreational Kayak - Sit on Top Tandem Kayak - Storage with Tie Downs - 13.6 ft - Dapper 13'7" / 550 lb max / 2-person 
Perception Kayaks Rambler Sit On Top for Recreation, Sunset, 13'6" 13'6" / 550 lb max / 2-person 
Sea Eagle 380x Inflatable Kayak Pro Carbon Tandem Package 12'6" / 750 lb max / 2-person / 10 PSI 
ADVANCED ELEMENTS AirVolution 2 Drop-Stitch Inflatable Kayak, Blue, 2 Person 550 lb max / 2-person With 15 lb of day gear, look for a kayak rated for at least 510 lb. That keeps your 355 lb total load at 70 percent of the rating, where the boat sits at its designed waterline. The absolute floor, for calm water only, is 420 lb.
Yes. The K2 is rated 400 lb, and a 340 lb paddler with 15 lb of gear loads it to 89% of its rating. That is above 70 percent, so paddle it solo on calm water or choose a higher-rated boat.
At average height, 10'6" to 12' in a sit-on-top or sit-in style. The weight changes capacity more than length: whatever the length, the rating needs to be 510 lb or more with day gear.
On the water: Wear a properly fitted, USCG-approved life jacket every time, dress for the water temperature rather than the air, and check your state and local paddling regulations before you launch.
This is researched general information, not professional advice. Sizing figures are starting points: confirm against the maker's own sizing chart and the capacity printed on the boat or board.