Family Tree Symbols and Conventions Explained
Family trees use a quiet visual language — once you know it, you can read any tree at a glance and draw your own clearly. Here's what the common family tree symbols and conventions mean.
The most widespread convention uses squares for males and circles for females. A person whose gender is unknown is sometimes shown as a diamond. Each shape holds the person's name, and often birth and death years. Keeping shapes consistent makes a tree instantly readable.
Lines for relationships
- A horizontal line between two people shows a marriage or partnership.
- A vertical line drops from a couple down to their children.
- A horizontal sibling line connects children of the same parents.
These three lines build almost every tree: couples joined across, children hanging below, siblings linked along a row.
Build your family tree — free
Kinidhi's tree maker lets you add relatives in a few taps, with the correct Telugu kinship term computed for every relative. No sign-up, nothing leaves your device, and you can download the finished tree as an image.
Open the free tree maker →Showing marriage, divorce, and more
Conventions exist for life's complications. A divorce is often shown by two slashes through the marriage line; a separation by one. A couple who had children without marrying may be joined by a dashed line. Adoption is typically shown with a dashed line to the child, and twins by two lines meeting at a single point.
Death and other details
A deceased person is often marked with a small symbol or by including their death year. Many trees add birth and death dates beneath each name, and some note places. The point is consistency — pick conventions and apply them throughout so the tree reads cleanly.
Reading a tree top to bottom
With these rules, a tree reads naturally: the oldest generation sits at the top, each lower row is the next generation, couples join horizontally, and lines descend to children. Once you internalize squares, circles, and the three kinds of lines, even a large, complex tree becomes easy to follow.
Build your family tree — free
Kinidhi's tree maker lets you add relatives in a few taps, with the correct Telugu kinship term computed for every relative. No sign-up, nothing leaves your device, and you can download the finished tree as an image.
Open the free tree maker →Beyond symbols: the relationship itself
Symbols show that two people are connected, but not always *how* it feels or what they'd call each other. In Indian families especially, the exact kinship term carries meaning a generic line can't. Recording both — the structure and the precise relationship word — gives you a tree that's clear to read and true to how the family actually relates.
Frequently asked questions
What do the symbols on a family tree mean?
Squares usually represent males and circles females. Horizontal lines show marriages, vertical lines connect parents to children, and sibling lines link children of the same parents. Special marks show divorce, adoption, twins, and death.
How is adoption shown on a family tree?
Adoption is typically shown with a dashed or dotted line connecting the adopted child to the parents, distinguishing it from the solid line used for biological children. Conventions vary, so a small legend helps.