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CSV Excel converter

Turn a CSV file into an Excel workbook, or export one sheet of an XLSX file as CSV, on your device.

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CSV Excel converter processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

Copy link includes the inputs you choose to share in the address. Anyone with that link can reopen them. Files and generated results are excluded. Password and key tools share settings only.

Conversion options

Result

CSV becomes text cells, preserving leading zeros and formula-looking text. Reading XLSX exports the selected sheet. Formulas are shown as formula text with cached results; they are never recalculated. Dates become ISO timestamps; formatting and merged-cell layout are lost. CSV export puts an apostrophe before text that starts with =, +, - or @, so a spreadsheet does not run it as a formula; numbers are written as they are.
Reset reloads the tool with its starting values and releases open files and device controls. Saved drafts stay on this device until you delete them.
Links include your inputs and settings. Anyone with the link can see them, so leave out private text. Files and generated results are left out; random draws run again.
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Updated 
Using CSV Excel converter
CSV becomes text cells, preserving leading zeros and formula-looking text. Reading XLSX exports the selected sheet. Formulas are shown as formula text with cached results; they are never recalculated. Dates become ISO timestamps; formatting and merged-cell layout are lost. CSV export puts an apostrophe before text that starts with =, +, - or @, so a spreadsheet does not run it as a formula; numbers are written as they are.
Next: CSV JSON converter
A worked example
The example CSV has Name and Count columns and an Octopus,8 row. XLSX stores both CSV values as text, including 8.
Next: JSON formatter
Before you use the result
CSV becomes text cells, preserving leading zeros and formula-looking text. Reading XLSX exports the selected sheet. Formulas are shown as formula text with cached results; they are never recalculated. Dates become ISO timestamps; formatting and merged-cell layout are lost. CSV export puts an apostrophe before text that starts with =, +, - or @, so a spreadsheet does not run it as a formula; numbers are written as they are.
Cite this page
ToolOctopus. “CSV Excel converter.” Updated 2026-09-29. https://tooloctopus.com/csv-excel-converter.
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