Adult woodlice usually have 14 legs , arranged as 7 pairs, one pair on each of the main body segments.

Quick Scoop

  • Most common woodlice (like the garden “pill bug” or “roly‑poly”) have 7 pairs of walking legs, giving a total of 14 legs.
  • Young woodlice can start with fewer legs (typically 6 pairs) and reach 14 legs after moulting as they grow.
  • A few unusual species can have more legs (for example, some “giant” woodlice species), but 14 is the standard number you’ll meet in everyday gardens and houses.

TL;DR: If you see a typical woodlouse in your home or garden, you can safely say it has 14 legs.

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