Sweet potatoes usually take about 45 to 65 minutes to bake at 400°F , depending on their size. Smaller ones can be done in about 30 to 45 minutes , while larger sweet potatoes may take up to 75 to 90 minutes.

Quick Scoop

  • 400°F: about 45 to 65 minutes for most whole sweet potatoes.
  • Small potatoes: roughly 30 to 45 minutes.
  • Large potatoes: about 75 to 90 minutes.
  • They’re done when a fork or knife slides in easily and the center feels soft.

Simple Tip

For even baking, prick the skin with a fork before putting them in the oven, and let them bake until they’re tender all the way through.

Temp Guide

  • 400°F: the most common range, usually around 1 hour for medium potatoes.
  • 425°F: can be faster, often 30 to 45 minutes for some recipes.

If you want, I can also give you the best baking time by sweet potato size or a super-simple oven method.