How to Find Someone's Birthday: 9 Free Methods (2026 Guide)

Short on time? The fastest ways to find someone's birthday are their Facebook profile (About tab, or search old "happy birthday" posts), a people-search lookup, or public voter records — most of which are free. Here are all nine methods, from quickest to most thorough.

1. Check their Facebook profile

Facebook is still the single best source, because most people stopped hiding their birthday years ago.

1. The About tab. Open their profile → About → Contact and Basic Info. Friends can see day and month (sometimes the full date with year).
2. Search their wall for old birthday posts. Use the search box on their profile and type "happy birthday". Friends post every year, so even if the About tab is locked, a decade of "Happy birthday!!" comments with dates is usually sitting right there.
3. Check the day after. If today is close to the date, sort their activity and look for a burst of wall posts.

If you're not friends with them, see whether their profile is public. If it isn't, a mutual friend can check the About tab in about ten seconds.

2. Use Google search tricks

Google indexes a surprising amount of birthday content. Try these, in order:

• `"happy birthday" "first last name"` — catches old forum posts, tagged photos, and guestbook entries.
• `"first last name" birthday` or `"first last name" date of birth`.
• `"first last name" age "years old"` — news articles and obituaries often state age, which narrows the birth year.
• If you know the city, add it to cut through people with the same name.

3. Run a people-search lookup

People-search sites pull birthdays and ages from public records into one profile. A free Personpages lookup returns a person's estimated age and birth month in seconds — just enter a name, age, and city. It's the fastest option when Facebook is locked down, and it works even if the person has no social media at all.

4. Check voter registration records

Most U.S. states publish voter rolls that include full date of birth, and most offer a free online lookup tool. Search "[your state] voter registration lookup", enter the person's name and county, and you'll often get the complete DOB. A few states restrict access to parties and researchers, but in most states anyone can query the roll.

5. Look through birth records and genealogy sites

For family research, genealogy databases are the deep source:

• FamilySearch (free) and Ancestry index billions of birth, baptism, and census records.
• State vital-records offices hold the birth certificates themselves, but most states seal birth records for 100 years or so, which rules out living people.
• Census and public indexes sometimes list age and birth month for older relatives, which narrows down the person you're actually looking for.

This method is best for finding a relative's birth details for a family tree rather than a coworker's birthday next week.

6. Check LinkedIn and professional bios

LinkedIn rarely shows the exact date, but the Education section lists graduation years, which puts their age within a couple of years. Company "about the team" pages, conference speaker bios, and award announcements often include age or birthday ("turning 40 this year").

7. Search court, property, and business records

County court indexes, property deeds, and state business filings often include full date of birth for identification. Free to search, but the interfaces are clunky and you usually need to know the county. Use it when other methods fail and you have a specific jurisdiction.

8. Ask a mutual friend or family member

The least creepy option and often the fastest: "hey, when's [name]'s birthday again?" No one thinks twice about it, and it beats ten minutes of digging.

9. Check old emails, calendars, and group chats

If you've known the person for a while, search your own inbox and chat history for "birthday". You may have wished them a happy one years ago and simply never wrote it down.

How to find someone's birthday without the year

Day and month are usually easy — Facebook, social posts, and people-search profiles show them freely. If you only need month and day (for a card or a cake), ignore anything asking for ID or payment to show the "full record"; free sources almost always cover what you need.

How to find someone's full date of birth (DOB)

The birth year is the sensitive half. Reliable free sources for a full DOB are voter rolls, county court and property records, and public obituaries. Many people-search sites intentionally show only month and day, or only approximate age, because full date of birth is an identity-theft input. If you need the exact DOB for legal or verification purposes, the person will have to provide it themselves.

Is it legal to look up someone's birthday?

Yes. A birthday is not protected information, and checking public sources is legal almost everywhere. What's illegal is using a date of birth to impersonate someone, bypass identity verification, or open accounts — that's identity theft regardless of how you got the date. Never use a birthday as a security-question answer or to guess passwords.

When you shouldn't keep looking

If a birthday is hidden on Facebook, scrubbed from search results, and absent from every public record, the person has made a choice about their privacy. Send a card next month instead of digging harder.