You’ll usually roast small potatoes for about 20–30 minutes, depending on size and oven temperature, until they’re golden and tender when pierced with a fork.

Quick Scoop

  • At 425°F (220°C), halved or 1‑inch small potatoes: about 20–30 minutes.
  • At 400°F (200°C), baby or mini potatoes: about 25–30 minutes.
  • Very tiny “new” or “tiny” potatoes can be done in about 16–22 minutes if the oven is hot (400°F+) and they’re truly small.

Simple method

  1. Preheat oven to 400–425°F (200–220°C).
  1. Toss small potatoes (whole or halved) with oil, salt, pepper, and any herbs.
  1. Spread on a sheet pan in a single layer, cut side down for extra crisp edges.
  1. Roast 20 minutes, then check; continue up to 30 minutes until crisp outside and soft inside.
  1. If a knife slides in easily and the edges are golden, they’re ready.

Rule of thumb: smaller pieces + hotter oven = shorter time, but always use color and tenderness as your final guide, not the clock.

TL;DR: For “how long to roast small potatoes,” aim for 20–30 minutes at 400–425°F, checking early if they’re very tiny and leaving them longer if they’re larger.

Information gathered from public forums or data available on the internet and portrayed here.