Atbash אתבש
Atbash is an exchange before it is a count: each letter is swapped for its mirror from the other end of the alphabet — alef for tav, bet for shin, gimel for resh — and the standard value of the new letter is taken. The name itself spells the first two pairs, א־ת and ב־ש. Final forms are exchanged as their base letters.
- Alef
- 400
- Tav
- 1
- Final mem
- 10
- All 22 letters
- 1,495
The letter table
Each letter’s value under Atbash, alef to tav, read right to left. Under each value, the letter it is exchanged for.
The five final forms, ך ם ן ף ץ, are exchanged as their base letters under Atbash; only Gadol gives them values of their own.
Three worked examples
Exchanged letter for letter, בבל becomes ששך, and the standard value of that is 620.
In the standard count, בבל is 34.
- ב300ש
- ב300ש
- ל20כ
300 + 300 + 20 = 620
Gematria 34, its standard value →Every match for 620 under Atbash →
Exchanged letter for letter, ששך becomes בבל, and the standard value of that is 34.
In the standard count, ששך is 620.
- ש2ב
- ש2ב
- ך30ל
2 + 2 + 30 = 34
Gematria 620, its standard value →Every match for 34 under Atbash →
Exchanged letter for letter, שלום becomes בכפי, and the standard value of that is 112.
In the standard count, שלום is 376.
- ש2ב
- ל20כ
- ו80פ
- ם10י
2 + 20 + 80 + 10 = 112
Gematria 376, its standard value →Every match for 112 under Atbash →
ששך stands in the text at Jeremiah 25:26 and 51:41; read in Atbash, its letters are בבל.
Reading results under Atbash
A search under Atbash lists every word, every run of adjacent words within a verse, and every whole verse of the Tanakh whose Atbash value equals your number — in canonical order, from Bereshit 1:1 forward, never ranked.
Open the calculator under Atbash →
Every value on this page was computed by the engine that indexes the Tanakh — the same arithmetic every search runs. None of it is typed by hand.