Free tools
Free genealogy tools
For the questions every family historian runs into.
Your files and dates never leave your computer.
GEDCOM checker and converter
Find what is wrong before you move your tree.
Check a GEDCOM family tree file for errors and convert it between GEDCOM 5.5.1 and 7.0, privately in your browser.
Open the toolRelationship calculator
Second cousin, or first cousin once removed?
Work out how two relatives are related, from second cousins to cousins several times removed, and how much DNA they should share.
Open the toolCalendar converter
The same day, as each calendar wrote it.
Convert dates between the Gregorian, Julian, Hebrew and French Republican calendars, and read Old Style double dates.
Open the toolBirth date calculator
Work back from the age on the stone.
Calculate a birth date from a date of death and an age at death, such as the age carved on a gravestone.
Open the tool
How they work
Small tools, honest answers
- Free, with no account
- Use them as often as you like. You never have to sign up to get an answer.
- Private by design
- Everything happens in your own browser. Your files and the dates you type are never uploaded.
- Written for genealogists
- Each tool explains its answer, shows the working, and says plainly what it cannot tell you.