Sweet Potato Air Fryer Cooking Time
Air fryer sweet potato: 35–40 minutes at 400°F (200°C). One whole medium sweet potato, about 8 oz.
Turn once at 20 minutes.
Done when a knife slides into the centre with no resistance and the skin has wrinkled.
Timer
35:00
How to cook Sweet Potato in an air fryer
- Pierce the skin several times with a fork so steam can escape.
- Rub with oil and salt for crisp, edible skin.
- Cut into ½-inch cubes instead to drop the time to 15–18 minutes.
Sweet Potato times by cut and size
| Type | Temperature | Time |
|---|---|---|
| Whole, medium (8 oz) | 400°F | 35–40 min |
| Cubed, ½ inch | 400°F | 15–18 min |
| Fries, ¼ inch | 380°F | 12–16 min |
| Halved lengthwise | 400°F | 20–25 min |
These times are compiled from manufacturer guidance and standard references, not measured in our kitchen. Safe internal temperatures are USDA-sourced. How we know what we know.
Common questions
How long do you air fry Sweet Potato?
Sweet Potato takes 35–40 minutes at 400°F (200°C) in an air fryer. Turn once at 20 minutes.
How long does a sweet potato take in an air fryer?
A whole medium sweet potato takes 35–40 minutes at 400°F (200°C). Cubed sweet potato takes only 15–18 minutes.
Do you need to wrap sweet potatoes in foil in an air fryer?
No, and you should not. Foil traps steam and softens the skin — the whole advantage of an air fryer here is the dry, crisp exterior.
Should you poke holes in sweet potatoes before air frying?
Yes. Piercing the skin lets steam escape and stops the potato splitting open as it cooks.
Converting your own recipe
If you have an oven recipe for Sweet Potato and want to work it out yourself, the rule is to drop the temperature by 25°F and cut the time by 20%. The oven to air fryer converter does it for you.