Number to Excel Column Converter
Convert between Excel column numbers and column letters.
Column letter
A
Reference
| Number | Column |
|---|---|
| 1 | A |
| 26 | Z |
| 27 | AA |
| 52 | AZ |
| 53 | BA |
| 702 | ZZ |
| 703 | AAA |
| 16384 | XFD |
How Excel column naming works
Excel uses a base-26 bijective numeration for column names: A=1 through Z=26, then AA=27, AB=28, … AZ=52, BA=53, and so on. It differs from standard base-26 because there is no zero — each digit is 1-based. The maximum column in Excel is XFD (column 16,384). This converter is useful when writing spreadsheet formulas or automating Excel with scripts.
For base conversions between decimal, binary, hex, and octal see the Number Base Converter.
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