Reviewed by Dr. L. Nageshwwar Rao, PhD (Astrology), Consulting Astrologer · Last reviewed 24 May 2026 · How we compute this
Pythagorean name-compatibility calculator. Enter the names two people actually use day-to-day; the tool reduces each name to its single-digit number (preserving master numbers 11, 22 and 33) and looks up the unordered pair in a symmetric 1–9 matrix grounded in Cheiro's classical numerology and the planetary friendship table from Brihat Parashara Hora Shastra. The result is a 0–100 score with a band reading from harmony down to friction.
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We reduce each name to its Pythagorean number — every letter A–Z maps to a digit 1–9 (A=1..I=9, J=1..R=9, S=1..Z=8), we sum them and reduce to a single digit, preserving the master numbers 11, 22 and 33. The two single digits are then looked up in a symmetric 1–9 by 1–9 compatibility matrix that follows the classical planetary friendships of Cheiro's numerology and Brihat Parashara Hora Shastra (each digit is governed by a planet: 1 Sun, 2 Moon, 3 Jupiter, 4 Rahu, 5 Mercury, 6 Venus, 7 Ketu, 8 Saturn, 9 Mars). The score is the matrix value, 0 to 100.
No. Numerology is a symbolic, interpretive tradition — not a science and not a forecast. The score reflects how the ruling planets of the two name-numbers relate in the classical scheme, not how two real people will actually treat each other. Long, happy relationships exist at every band of this matrix, and short, painful ones exist at every band too. Use the result as a conversation prompt, not as evidence about the relationship.
The Pythagorean table is defined over Latin letters A–Z only, so we normalise the input — Unicode diacritics are stripped (Émilie reads the same as Emilie), and anything outside A–Z is ignored. If the name you actually use is in Devanagari, Arabic or another script, enter the romanisation you would write on a passport or sign-up form. For Indian-language readings, our Naam-ank tool on the main numerology page uses the Chaldean / Vedic letter table instead.
Yes — completely. The score describes a default tension between the energies your name-numbers symbolise, not a verdict on your relationship. Awareness of the friction band is often more useful than a high score: couples who know where they grate tend to do the work, while couples who assume effortless harmony often don't. Plenty of long, loving relationships sit in the lower bands of this matrix.
No. Even within Cheiro's own tradition, a name change is a serious corrective measure considered only after a full numerological consultation looking at birth-date numbers, current circumstances and the wider chart. Changing spelling to chase a higher compatibility score with one partner — and at the cost of the spelling that has carried the rest of your life — is not what the source tradition actually recommends.
Sharing a name-number means sharing a ruling planet — which can amplify either resonance or shared flaws. The classical view is that identical numbers are not automatically harmonious: two 1s can clash over leadership, two 4s over stubbornness, two 8s over duty. We score self-pairs in the workable / friendly band and surface the doubled-energy dynamic in the result text rather than rewarding identical inputs with a perfect score.
This love calculator is name-based numerology and produces a single score from two strings. Kundli Milan is birth-chart-based Vedic astrology and produces a 36-point Ashtakoot score from two full birth records (date, time, place). They look at completely different signals — names versus charts — and a result from one is not a substitute for the other. For a marriage-grade compatibility reading, use the Kundli Milan tool with full birth details.
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