Love Calculator (Name Compatibility Percentage)

The Love Calculator is a light-hearted, name-based game that turns two names into a “compatibility” percentage between 0% and 100%. You type in your name and someone else’s, and it returns a number using a fixed, repeatable letter-counting rule. It’s the digital descendant of the paper-and-pencil name games friends have played for generations — a fun icebreaker, a party trick, or a way to break the tension on a first date.

Two things are worth saying up front. First, the result is deterministic: the same two names always produce the same percentage here, with no randomness. Second — and this matters — it is purely for entertainment. There is no science behind it. A percentage from a letter game tells you nothing real about attraction, trust, communication or whether a relationship will last.

Our version uses one specific, fully documented rule so the answer is reproducible:

• Combine and clean. Both names are joined into one string, converted to uppercase, and everything that isn’t a letter A–Z (spaces, digits, punctuation, accents) is removed.
• Count the LOVES letters. We count how many times each letter of the keyword LOVES appears, in order, giving a five-number sequence: [L, O, V, E, S].
• Reduce the pyramid. We repeatedly replace the sequence with the sums of each neighbouring pair — [a, b, c] becomes [a+b, b+c] — until exactly two numbers are left.
• Join and clamp. The final two numbers are written next to each other as digits to form the percentage, then capped to the 0–100% range.

S = clean(name1 + name2)  →  D = [countL, countO, countV, countE, countS]  →  reduce by adjacent sums to [x, y]  →  percentage = clamp(join(x, y), 0, 100)

Here is exactly how the calculator turns two names into a score — every row below is produced by the same engine that runs the live tool above, so it can never disagree with it.

Reading it top to bottom: the names clean to ALICEBOB, which contains one L, one O, no V, one E and no S. That five-number sequence collapses, pair by pair, down to two numbers, and joining them gives the final percentage.

Small changes in spelling shift the counts and therefore the score. The table below shows how a handful of pairs land — notice how letter-dense names such as “Love” push the raw number well past 100, where the clamp keeps it at exactly 100%.

The number itself is just where the letter-counting math landed — it isn’t a verdict on anyone’s relationship. If you want a playful way to read it, here’s a rough, purely-for-fun way people tend to talk about the bands:

• 80–100% — the letters lined up about as well as this game can produce. Take it as an excuse to laugh, not as proof of anything.
• 50–79% — a solidly middling result — most name pairs land somewhere in this wide band, so don’t read too much into either direction.
• 20–49% — a lower score, which usually just means the two names don’t share many L/O/V/E/S letters — a spelling quirk, not a relationship fact.
• 0–19% — the rarest band, typically from short names or names with almost none of the counted letters. Try a nickname or a different spelling and watch the number move.

Because every letter in a name affects the count, the honest takeaway is that this score tracks spelling, not chemistry. For a grounded look at what actually predicts a healthy relationship — communication, trust, shared values — see the American Psychological Association resource linked in Sources below.

• Entertainment only. There is no scientific, psychological or statistical basis for the output. It does not measure real compatibility, attraction or relationship outcomes.
• No canonical formula exists. Every love-percentage site uses its own arbitrary rule, so this tool’s number will differ from others — that’s expected, not a bug.
• Only letters count. Spaces, digits and punctuation are stripped, and accented characters are folded to their base letter before counting.
• It handles empty and odd input gracefully. Blank names or names with none of the letters L, O, V, E, S simply score 0% — there is no division anywhere, so nothing can crash or return an error.

If you enjoy playful name-and-date tools, you might also like our Age Difference Calculator to see the gap between two people’s ages, or the Birthday Calculator to find the day of the week someone was born.