Preheat the air fryer to 400°F. Peel the carrots, then cut them into evenly sized fry-shaped sticks. Keeping the carrots similar in size helps them cook evenly in the air fryer.
Place the carrots in a large bowl and toss with olive oil and ranch seasoning until evenly coated.
Arrange the carrots in a single layer in the air fryer basket, working in batches if needed to avoid overcrowding.
Air fry for 12–15 minutes, shaking the basket halfway through, until the carrots are tender with lightly crisped edges.
Remove from the air fryer and serve immediately while hot.
Cut carrots evenly: Cutting the carrots into similar-sized sticks helps them cook at the same rate and prevents some pieces from becoming too soft while others are undercooked.
Don’t overcrowd the basket: Air frying works best when the carrots are in a single layer so hot air can circulate and create lightly crisped edges.
Shake halfway through: Shaking the basket halfway ensures even cooking and browning.
Serve right away: These carrot fries are best enjoyed fresh from the air fryer while they’re hot and lightly crisp.