Draw Family Tree

Pedigree chart maker for genetics

Draw a genetic pedigree with the standard symbols: affected and carrier individuals, deaths, the proband, and generations numbered I, II, III. Starts with an autosomal recessive example. Free, and nothing is uploaded.

  • 100% free, no sign-up
  • Nothing is uploaded
  • Standard symbols
  • Print-ready PDF with a key
Examples:

People

Click anyone on the chart, or a name here, to edit them and add relatives.

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Everything stays on this device. The chart is saved in this browser only and is never uploaded, so it is safe to use for class work. Use Save file to keep a copy.

How to draw a pedigree

  1. Start with the proband, the person who brought the family to attention; the chart marks them with an arrow.
  2. Add the parents, then the grandparents on each side, and the brothers and sisters in birth order.
  3. For each person, set the trait: unaffected, affected (filled), carrier (half filled) or carrier shown with a dot.
  4. Mark deaths with the Deceased box, and couples related by blood with Related by blood.
  5. Download the PDF: generations are numbered with Roman numerals and each person gets a number, like II-3.

The symbols and the inheritance patterns (autosomal dominant and recessive, X-linked) are explained in pedigree chart symbols and how to read a pedigree.

Pedigree or genogram?

A genetic pedigree follows one trait through a family. A genogram shows relationships, health and life events in general. And if you are tracing your ancestors, the genealogy kind of pedigree chart is in the printable templates.

Questions

Can I show a carrier with a dot instead of half shading?

Yes. Choose Carrier, not affected (dot) under Trait. Half shading is the usual way to show carriers of autosomal recessive traits; the dot is common for women who carry an X-linked trait.

How are the people numbered?

Each generation gets a Roman numeral, from I at the top, and the people in it are numbered from left to right. The numbers update as you add people.

Is it free and private?

Yes. No sign-up, and the chart is saved only in your browser.