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Love Compatibility Calculator
Two birth dates
For entertainment only — astrology is not science. This score comes from Sun signs and life-path numbers, and the page shows every step of the calculation.
Air and Water can work well when both partners listen: Gemini brings curiosity, Pisces brings feeling. Different life-path numbers (4 and 7) mean you approach plans differently, so talk through decisions early.
Example: Alex, born 15 June 1990 (Gemini, Air, life path 4), and Sam, born 10 March 1992 (Pisces, Water, life path 7) — element 25 + life path 15 + aspect 16 = 56%, a fair match.
Behind the numbers
How the compatibility score is calculated
Each person’s Sun sign comes from their date of birth, and each sign belongs to one of four elements. The score has three parts that add up to 100: the element pairing (up to 40 points), the life-path numbers from the two birth dates (up to 30 points) and the aspect between the two Sun signs on the zodiac wheel (up to 30 points). Nothing is random — the same two dates always give the same score.
Worked example: Gemini (Air) and Pisces (Water) score 25 for elements. Life paths 4 and 7 differ by 3, so 15 points. Gemini and Pisces sit 3 signs apart, a square aspect, so 16 points. Total: 25 + 15 + 16 = 56%.
Element pairings (out of 40)
Life-path scores (out of 30)
Same number: 30. Differ by 1: 25. Differ by 2: 20. Differ by 3: 15. Differ by 4: 10. Differ by 5 or more: 5.
Sign aspects (out of 30)
Trine (4 signs apart): 30. Same sign: 26. Sextile (2 apart): 24. Opposite (6 apart): 22. Square (3 apart): 16. Quincunx (5 apart): 14. Next-door signs (1 apart): 12.
A few comparisons
Example compatibility scores
| Pair | Signs | Elements | Life paths | Score |
|---|---|---|---|---|
| 15 Jun 1990 & 10 Mar 1992 | Gemini × Pisces | Air + Water (25) | 4 and 7 (15) | 56% |
| 5 Jan 2000 & 25 May 2001 | Capricorn × Gemini | Earth + Air (20) | 8 and 6 (20) | 54% |
| 2 Nov 1988 & 14 Feb 1990 | Scorpio × Aquarius | Water + Air (25) | 3 and 8 (5) | 46% |
| 30 Jul 1998 & 5 Dec 1999 | Leo × Sagittarius | Fire + Fire (40) | 1 and 9 (5) | 75% |
Read the score the right way
Check the three parts, not just the total: a low element score with a high life-path score tells a different story from the reverse.
Scores of 80% and above are an excellent match, 65–79% is strong, 50–64% is fair, 35–49% is challenging and below 35% is low.
Use the exact birth dates: a birthday near a sign boundary (for example 20–21 June) can change the Sun sign and the whole score.
Remember this is entertainment. Real compatibility comes from how two people communicate and treat each other, not from their birth dates.
Good to know
Your compatibility questions, answered.
How is the love compatibility score worked out?
From three transparent parts: the element pairing of your two Sun signs (up to 40 points), your two life-path numbers (up to 30 points) and the aspect between your two Sun signs on the zodiac wheel (up to 30 points). The page shows each part, so you can see exactly where the total comes from.
What do the elements mean for compatibility?
Each Sun sign belongs to one of four elements: Fire (Aries, Leo, Sagittarius), Earth (Taurus, Virgo, Capricorn), Air (Gemini, Libra, Aquarius) or Water (Cancer, Scorpio, Pisces). Same-element pairs score highest at 40, Fire with Air and Earth with Water score 35, and Fire with Water scores lowest at 15.
What is a life-path number?
Add up all the digits of a birth date and keep adding the digits of the result until one digit is left. For 15 June 1990 that is 1 + 9 + 9 + 0 + 0 + 6 + 1 + 5 = 31, then 3 + 1 = 4. Two people with the same life-path number score 30 points; the further apart the numbers, the fewer points.
Is love compatibility scientifically proven?
No. Astrology has not been shown to predict how well two people get along, and this calculator is for entertainment only. Treat the score as a fun talking point, not as a decision about a relationship.