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Love Calculator

Type two names to get a light-hearted compatibility score and message — purely for fun, computed instantly in your browser.

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This is purely for entertainment.

How to use Love Calculator

The love calculator is a lighthearted compatibility tool that generates a fun percentage score and playful message from any pair of names. The score is computed from a deterministic hash of the two names — alphabetically sorted so order does not matter — which means the same pair of names always produces the same result. This is purely for entertainment and amusement; there is no scientific basis for name-based compatibility, and no personal data is stored or transmitted.

  1. Enter your name in the first field and your partner's (or crush's) name in the second field.
  2. Click Calculate to instantly see your compatibility percentage.
  3. Read the playful message that accompanies your score.
  4. Copy the result or share it with your friends using the share button.

Your data never leaves your device — 100% private processing.

How the score is calculated

The score is produced by a deterministic string hash: both names are lowercased and trimmed, sorted alphabetically so that "Alice & Bob" gives the same result as "Bob & Alice", then joined into a single string. A simple polynomial rolling hash multiplies by 31 and accumulates character codes modulo a large prime (1,000,003), producing a stable integer. That integer is taken modulo 101 to give a percentage from 0 to 100. The algorithm is intentionally simple and repeatable — the same names always return the same score, making it fun to test different combinations.

The history of love calculators

Love calculators have been a popular novelty since the early days of the internet in the late 1990s. They were among the first "interactive" web experiences that felt personalised, even though most used simple hash or character-counting algorithms. Today they remain popular for entertainment, social media sharing, and as light icebreakers. Many variations exist: flame tests (Friends, Love, Affection, Marriage, Enemies), birthday compatibility calculators, and star sign matching. All are designed for fun rather than genuine relationship prediction.

Worked examples

Same pair, same score

Inputs: Alice & Bob

Result: Returns an identical compatibility % on every run

Order does not matter

Inputs: Bob & Alice

Result: Same score as Alice & Bob (names are sorted first)

Different names, different score

Inputs: Alex & Sam

Result: Each name pair maps to its own fixed % from 0–100

Glossary

Hash function
A function that converts an input (like a string) into a fixed-size integer; used here to produce a deterministic score from two names.
Deterministic
Producing the same output every time for a given input; the opposite of random. The score for any name pair is always the same.
Compatibility
In this context, a playful numerical expression of how well two names "match" — purely for entertainment.
Polynomial rolling hash
A hash algorithm that computes h = h×31 + char_code for each character, producing a stable integer from a string.

Related reading

Frequently Asked Questions

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Why use Love Calculator?

  • Generates a deterministic score so the same name pair always returns the same result
  • Sorts names alphabetically so "Alice & Bob" equals "Bob & Alice" with no input-order bias
  • Pairs the percentage with a personalised playful message for added entertainment value
  • Processes names entirely client-side — no names are ever sent to any external server

Common use cases

  • Test a celebrity name pairing for a fun social-media post or short-form story
  • Check your score with a crush to spark a lighthearted and low-stakes conversation
  • Compare compatibility scores for several name combinations in quick succession
  • Use the tool as a playful icebreaker activity at a party or social gathering
  • Explore how different name spellings or nicknames affect the hash-generated score

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