Marriage Age Calculator
Enter both birth dates and a proposed wedding date to see age in years, months, and days.
Free · No signup · Works in your browser
This only calculates age. For a U.S. ceremony, find your state marriage-license office through USAGov and confirm its current rules.
What marriage age calculator helps you do
This calculator answers a narrow date question. It does not decide whether anyone is legally eligible to marry.
Marriage-license rules depend on location and can change. For a U.S. wedding, begin with USAGov's state licensing guidance and confirm directly with the issuing office.
How it works
Enter birth dates
Use calendar dates for both partners.
Choose a proposed date
See each person's age on the day you plan to marry.
Check local rules
Use the official link to find the relevant issuing authority and current requirements.
Ways couples use this tool
Planning ahead
See how old each partner will be on a future wedding date.
Comparing possible dates
Change the date to see the age calculation update immediately.
Marriage Age Calculator: practical tips
The result is calendar age on the date you enter. Use it to compare dates, then check the relevant licensing rules with the authority that will issue the license.
01
Use the relevant date
A ceremony date and a license application date may differ. Calculate age for whichever date you need to discuss, and check whether the issuing office uses another date for its rules.
02
Read years, months, and days
A person can be close to a birthday without having reached it. The detailed breakdown makes that distinction visible when you compare proposed dates.
03
Verify the legal requirements
Requirements differ by jurisdiction and can include documents, waiting periods, or consent rules. Consult the official local office before booking around an assumed eligibility date.
Make the result useful
- Use the actual ceremony or license date that matters to your local office.
- Check consent and documentation rules with the issuing authority.
- Do not rely on a calculator for legal eligibility.
Frequently asked questions
Does this say whether we can legally marry?
No. It only calculates age on a date. The local licensing office determines current requirements.
Which official source should U.S. couples use?
USAGov links to the appropriate state vital-records office for marriage-license information.
Does the result account for leap years?
Yes. The age is calculated from calendar dates, including leap-year birthdays and month lengths.
Should I use the ceremony or application date?
Use the date relevant to your question. Ask the issuing office which date matters for its current licensing rules.