Getting Started
How OneGreatFamily works
From your first search to deeper research — here is what to expect when you explore the world's largest collaborative family tree.
01
Start with a name
Enter a surname on the home page to see how your line may already connect to work submitted by others. Results help you jump into matching branches faster than starting from scratch.
02
Explore the tree
Navigate ancestors and relatives in an interactive view. Pan, zoom, and open details to see vitals, places, and how individuals link across generations.
03
Add and refine
When you find gaps or conflicts, add or edit information using structured genealogy fields — so hints, merges, and matches stay consistent over time.
04
Use the toolkit
Maps, statistics, and research workflows help you see migration patterns, spot missing facts, and prioritize what to verify next.
Your history is waiting
Millions of your ancestors
may already be in our tree.
Start free. No credit card required. Search any surname and see what's already been discovered by other families.