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SPREADSHEET UTILITIES

Spreadsheet Column Converter

Convert spreadsheet column labels and numbers in bulk, including ranges and zero-based indexes.

SPREADSHEET COORDINATE MAPPER

Translate letters into positions.

Excel-style columns use a bijective alphabet: A is the first column, Z is the 26th, and AA begins the next cycle.

INPUT SET8values & ranges
MAPPED8valid positions
NEEDS REVIEW0invalid values
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Column references

Separate values with commas, spaces, or new lines.

TRY A SET
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Mapping rules

Choose how input tokens are read.

Modern sheet limitXFD · 16,384 · higher values are flagged

MAPPING TABLE

Review each conversion

8 / 8 ready
A→1✓Spreadsheet position 1 · A=0 base 26 would give 0.
Z→26✓Spreadsheet position 26 · A=0 base 26 would give 25.
AA→27✓Spreadsheet position 27 · A=0 base 26 would give 0.
XFD→16384✓Spreadsheet position 16,384 · A=0 base 26 would give 15,681.
1→A✓Spreadsheet position 1 · A=0 base 26 would give 0.
26→Z✓Spreadsheet position 26 · A=0 base 26 would give 25.
27→AA✓Spreadsheet position 27 · A=0 base 26 would give 0.
16384→XFD✓Spreadsheet position 16,384 · A=0 base 26 would give 15,681.
One output per input token · local only

This is spreadsheet column notation, not ordinary zero-based base 26. Invalid values stay visible so a typo cannot silently shift your column positions.

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How this app works

Enter column letters or numbers, choose a direction and numbering base, then review bulk conversions and expanded ranges.