Digraph Number Decoder
Turn numbers into two-letter pairs using an AA=1 to ZZ=676 grid, and back again.
Some puzzles hide text in numbers that look like arithmetic but are not. Each number is really a pair of letters, read off a 26 by 26 grid of every combination from AA to ZZ. With the default settings AA=1, AB=2, and ZZ=676. A dash usually means "join these decoded pairs into a word", so 93-175 reads as DO + GS = DOGS.
Not the same as the Porta Key cipher (a polyalphabetic cipher), and not the same as spreadsheet column letters (those count A=1 to Z=26, AA=27). This tool just numbers letter pairs.
Dashes join pairs into one word. Pipes | (or slashes) separate words. Line breaks separate rows. Spaces and commas are fine too.
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Leave blank for A-Z. Custom alphabets must have unique letters.
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Breakdown
Next steps for a coordinate puzzle
The decoded words are often just stage one. Take the first or last letter of each word, then send those to the Multi Decoder (it does A1Z26 and more), and feed the digits into the Coordinate Converter. Always confirm the final spot with the cache's own checker.