Sun Ninja Hand Pump for Paddle Board, Inflatable Hammock and Floating Chair $18.89 View on Amazon
Size chart
Paddle board PSI and pump time chart
Quick answerMost inflatable paddle boards run 12 to 15 PSI. A 10'6" x 33" x 6" board at 15 PSI takes about 425 strokes and 9 minutes on a hand pump. Pressure climbs about 1 PSI for every 25 F of heating, so let some air out on hot days.
| Board | Air volume | Hand pump strokes | Hand pump | Double-action | Electric |
|---|---|---|---|---|---|
| 8' x 30" x 6" | 204 L | 294 | 7 min | 5 min | 6 min |
| 10' x 32" x 6" | 272 L | 392 | 9 min | 7 min | 8 min |
| 10'6" x 33" x 6" | 294 L | 425 | 9 min | 8 min | 8 min |
| 11' x 34" x 6" | 318 L | 459 | 10 min | 8 min | 9 min |
| 11'6" x 35" x 6" | 342 L | 493 | 11 min | 9 min | 10 min |
| 12'6" x 32" x 6" | 340 L | 490 | 11 min | 9 min | 10 min |
Gear sized from this chart
Match the row that fits you, then check the listing's own dimensions and rated capacity.
Sun Ninja Hand Pump for Paddle Board, Inflatable Hammock and Floating Chair 
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Pressure (PSI) is what turns an inflatable into a stiff board. The drop-stitch core lets a board hold 12 to 20 PSI; under-inflated boards bend in the middle, which feels like instability. The printed maximum near the valve is the limit, not a target to exceed. Heat matters: air expands as the board warms, so a board pumped to 15 PSI at the car and left on hot sand can pass 16 PSI.
| Craft | Typical PSI | Notes |
|---|---|---|
| Inflatable SUP, all-round | 12 to 15 | Heavier riders run the top of the printed range |
| Touring and race iSUP | 15 to 20 | Stiffer board, better glide |
| Kids iSUP | 10 to 13 | Check the valve label |
| Drop-stitch kayak floor | 6 to 10 | Side tubes stay low pressure |
| Vinyl I-beam kayak (Intex style) | About 1 to 2 | Use the included gauge-free pump; do not overinflate |
Want the number for your exact weight and height? Use the inflation psi and pump time calculator, which runs the same math as this chart.
Frequently asked questions
What PSI should I inflate my paddle board to?
Use the range printed next to the valve, usually 12 to 15 PSI for all-round boards. Riders over about 200 lb should use the top of that range. Never exceed the printed maximum, and let a little air out if the board will sit in direct sun.
How long does it take to pump up a paddle board?
About 8 to 10 minutes with a hand pump for a 10'6" board to 15 PSI, roughly 400 to 450 strokes. A double-action pump saves a couple of minutes early on. A 12 volt electric pump takes a similar time but frees you to unload the car.
Is 10 PSI enough for a paddle board?
For a light rider or a child on a small board, 10 to 12 PSI can be enough. For an adult on a 10'6" board it usually is not: the board flexes, the nose and tail sag and it feels unstable. Pump to at least 12 PSI.
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.