
Did Tesla really say 3, 6, 9 is the key to the universe?
The quote is everywhere and almost certainly not his. Here's what we found when we checked the primary sources — including a misattribution of our own — and the arithmetic that survives it.
Type any word and see its value under Simple, English and Jewish gematria, the four Hebrew mispar methods, Armenian numerals and the Perso-Arabic abjad — every one with its per-letter working and digital root. Free, and no sign-up to calculate.
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What everyone else has been calculating — ranked by how often each word's been searched.
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Enter any word or phrase. Punctuation and spaces are ignored automatically.
See the value under fourteen ciphers at once, in four alphabets — Latin, Hebrew, Armenian and Perso-Arabic.
Each total reduces to a single digital root. Roots of 3, 6, or 9 stand out.
From the journal

The quote is everywhere and almost certainly not his. Here's what we found when we checked the primary sources — including a misattribution of our own — and the arithmetic that survives it.
One word, six correct answers. Which cipher gives which number, which ones are ancient and which were invented last century, and how to tell a real coincidence from one the arithmetic forced.
Multiply anything by nine and the digits of the answer sum back to nine. That trick is the whole idea behind digital roots — what they are, where 3·6·9 comes from, and what they cannot tell you.
A precise calculator for any word, and a generator that invents names landing on 3, 6, or 9.
Name generation is credit-metered — a few cents per name, with repeats at half price. New accounts start with a welcome grant.
It adds up the numeric values of a word's letters so you don't have to. That's useful for reading rabbinic or Kabbalistic commentary that cites a word's value, for studying Greek isopsephy or the Arabic abjad, and for checking a claim someone has made about two words sharing a number. GeMater runs fourteen ciphers at once and shows the per-letter working, so you can verify the total rather than take it on trust.
It depends entirely on the cipher, which is why answers differ across the internet. In Simple gematria (A=1 … Z=26) JESUS is 74. In English gematria (each ordinal × 6) it is 444, and under GeMater's Jewish cipher it is 985. The Greek Ἰησοῦς is 888 by isopsephy, which is the value most often quoted in older sources. None of these is more correct than the others — they answer different questions, and a number only means something once you say which system produced it.
No single name owns it. 666 is the 'number of the beast' from Revelation 13:18, and the oldest scholarly reading is that it encodes Nero Caesar written in Hebrew letters (נרון קסר), which sums to 666 under standard Hebrew values. Many English words also reach 666 under one cipher or another, but with 26 letters and several competing systems that is arithmetic rather than revelation — any target number has a large supply of words that hit it.
Gematria is the practice of assigning numerical values to alphabet letters, summing those values for words and phrases, and treating words with equal sums as meaningfully related. It originated in Hebrew, with parallel systems in Greek (isopsephy) and Arabic (abjad). Modern English gematria appeared in the late 19th century.
Pick a method. For Simple English gematria, replace each letter with its position (A=1, B=2, … Z=26) and add them up. TORAH = 20 + 15 + 18 + 1 + 8 = 62. Other methods use different per-letter values, but the addition step is the same.
Simple is English Ordinal: A=1 … Z=26. English (sometimes called English Sumerian) multiplies each ordinal by 6, so A=6 … Z=156. Jewish uses the classical Hebrew letter values (Aleph=1, Bet=2, Yud=10, Qof=100, Tav=400) mapped onto the Latin alphabet, so you can type in English and get a Hebrew-flavoured total.
Sum the digits of a number. If the result still has multiple digits, sum again. Repeat until one digit remains. Example: 666 → 6+6+6 = 18 → 1+8 = 9. The digital root of any base-10 number equals that number modulo 9 (or 9 if it's a positive multiple of 9).
Yes. Type Hebrew and GeMater reads א–ת directly under four classical methods — Mispar Hechrachi (Standard), Gadol (final letters 500–900), Katan and Siduri. תורה = 611 under Hechrachi. The separate Jewish cipher stays for Latin typists: it maps Hebrew-range values onto A–Z, so TORAH gives 239 there, not 611. Armenian (Ա–Ֆ) and Arabic/Persian abjad (ا–ي) are read directly too.
Four. Latin A–Z, Hebrew א–ת, Armenian Ա–Ֆ and the Perso-Arabic ا–ي (including پ چ ژ گ). Whichever you type, every cipher still returns a number: the ones that read your alphabet count it directly, and the rest read a transliteration, which the result card labels as such so a transliterated total is never mistaken for a direct one.