Genealogy Calculators / Date & Calendar Tools

Use these date, money, relationship, and surname calculators to help build your family history.

  • Age Calculator
    Calculate the difference between any two dates. Use to calculate age at death, or current age.

  • Birthdate Calculator
    Calculate a birth date from information found on a tombstone or death certificate.

  • Cousin Calculator
    Calculate the family relationship between two people who share a common ancestor.

  • Day of Week Calculator
    Enter date to calculate day of week.

  • Easter Holiday Finder
    Enter year to calculate the date on which Easter falls.

  • Inflation Calculator
    Calculate today's monetary value for ancestor's salaries, will bequests, etc.

  • Metaphone Calculator
    Converts your name to the metaphone code, compare surnames to see if the metaphone codes are the same, and see the explanation of how metaphone works.

  • Perpetual Calendar
    Enter month and year (0000 to 9999) to get calendar for that month.

  • Relationship Definitions
    Ever wondered what a first cousin, once removed meant? How about a kissing cousin or a double cousin? You'll find the definitions here.

  • Roman Numeral Converter
    Convert a roman numeral to a decimal number. Roman numbers are often found on tombstones or legal documents.

  • Soundex Calculator
    Convert surname to soundex code online. Find other surnames with the same soundex code.

  • Time Capsule
    Generate a Time Capsule page with headlines, consumer prices, birthdays, songs, TV shows, toys, and books for the selected date. The years included are from 1800 to 2005.

  • Julian to Gregorian Calendar Chart
    Explanation of the calendar and its change from Julian to Gregorian.