How Long to Cook French Fries
Homemade french fries from fresh potatoes, or frozen pre-cut fries.
The Short Answer
In the oven at 425°F, french fries takes 25–35 minutes. Scroll down for all cooking methods, detailed instructions, and tips from the Professor.
Cooking Methods
🔥 Oven
Temperature: 425°F
Time: 25–35 minutes
Spread in a single layer on a sheet pan. Flip halfway. For crispier fries, soak cut potatoes in cold water for 30 minutes and dry thoroughly before baking.
💨 Air Fryer
Temperature: 400°F
Time: 15–20 minutes
Shake basket every 5 minutes. Do not overcrowd. For frozen fries: 400°F, 12-15 minutes, no oil needed.
The secret to crispy oven fries: soak the cut potatoes in cold water for 30 minutes (removes surface starch), dry them completely, then toss with oil. Soggy fries are almost always caused by surface moisture.
Frequently Asked Questions
Soaking removes surface starch. Excess starch prevents crisping. After soaking, dry thoroughly; water on the surface creates steam and prevents browning.
The Bottom Line
French Fries is straightforward to cook when you know the time and temperature. Use the method that fits your equipment and schedule, and always let the food rest before cutting or serving. Resting allows juices to redistribute and carryover cooking to finish the job.
Source: Culinary reference | Last verified: March 19, 2026 | Our methodology