Crush Calculator by Name & DOB

How it works

Enter both names and both birthdays. All four fields are required here. The calculator strips each name down to letters, sorts the pair, and runs it through a fixed formula for a name-based read out of 100, then runs the two birthdates through a separate formula for a date-based read. The final percentage blends the two at 60% names and 40% birthdays, rounded to the nearest whole number.

Both reads are fixed on their own, which is why the blended result is too. Type the same two names and the same two birthdays in any order, any number of times, and you'll get the same final number. There's no randomness, and nothing gets checked against an outside source. The four values you enter are all the calculator ever sees.

Everything runs locally in your browser. Nothing you type is sent to a server or saved anywhere. Only have names to work with, no birthdays? The plain Crush Calculator skips the birthday step entirely. Prefer birthdays to stay optional instead of required? Try the Compatibility Calculator. Want to skip names altogether? The Birthday Compatibility Calculator works from two dates of birth alone.

Why bring birthdays into a crush reading at all

Folk compatibility has always drawn on more than one input at a time. Numerology assigns a value to every letter in a name and reduces it down the same way it reduces a birthdate to a life path number. Astrology pairs a birth-date sun sign with a read on someone's personality. This calculator borrows both habits at once: a name score and a birthday score, run side by side instead of picking one.

Names still carry the larger 60% share on purpose. They're the centerpiece of the classic crush-calculator format this tool is built on, so keeping them dominant keeps the result feeling like a crush calculator first, with the birthday math nudging the outcome rather than taking it over.

Reading your combined score honestly

Adding a second input can make a result feel more thorough, but a formula built on two fixed inputs isn't more accurate than one built on a single input. It just produces a different number. Use it exactly the way you'd use the plain Crush Calculator: a fun, shareable guess, not a stand-in for the conversation that would actually tell you how your crush feels.

Signs to actually watch for, beyond the score

A percentage can't read someone's texting habits, but those habits usually say more than the score does. Response time matters less than consistency. Someone who reliably replies within a few hours every time is showing more interest than someone who occasionally fires back instantly, then disappears for two days. Starting a conversation with no obvious reason, not just replying to yours, is one of the more reliable digital-age signals, since it takes actual effort rather than just courtesy.

Social media adds a second layer worth reading carefully. Viewing your stories consistently, reacting to posts that aren't recent, or following back quickly after you follow them are all small, low-effort tells that someone is paying attention. None of them confirm romantic interest on their own; plenty of people do all three out of simple friendliness. What tends to separate genuine interest from politeness is whether the attention is one-sided or two-way, and whether it holds up over weeks rather than one enthusiastic afternoon.

None of this replaces the score above for a bit of fun, and none of it replaces actually asking. It's just a better source of real information than any name-and-birthday formula could ever be.