Family Relationship Calculator

What do you call your father's brother? Your cousin? Your spouse's sister? Pick a language or tradition below to see the real words families use.

By Region & Language

European & American

South Asian

By Religion & Tradition

Map out your real family, not just the words for it

Build a family tree with everyone's actual names, photos and relationships. Free to start, no sign-up required.

Build your family tree

Frequently asked questions

How does the family relationship calculator work?+

Pick a language, culture, or religious tradition below to see a full chart of real family relationship terms used in that tradition, from immediate family through extended and in-law relatives.

Which languages and traditions are covered?+

Dozens of traditions across European & American, South Asian, Southeast Asian, East Asian, and African languages, plus several religious traditions, with more added over time.

Can I look up in-law and step-family terms too?+

Yes. Each tradition's chart includes in-law terms alongside blood relatives wherever that tradition uses distinct words for them.

Do I need an account to browse relationship terms?+

No. Browsing every tradition's chart is completely free and doesn't require an account. You'll only need one if you want to build and save your own family tree.