What size chainsaw do I need for cutting firewood?

For most homeowners cutting firewood from logs up to about 16 inches in diameter, a 50–55cc saw with an 18–20 inch bar (such as the Husqvarna 450 or 455 Rancher class) is the sweet spot reviewers consistently recommend. For occasional limbing and small trees, a 35–40cc homeowner saw is enough; for regular felling of larger hardwoods, reviewers point toward 60cc+ saws.