Data & CSV

CSV value recoder

Apply an explicit whole-cell value map without substring replacements.

Your inputs

Your CSV

Up to 25 MB per file, 50,000 data rows, 200 columns and 2 million data cells. Fully blank rows and columns are ignored before row, column and cell limits are checked. Individual tools may have smaller result or chart limits.

Or choose a CSV file

Column separator

Column to recode

Value map: From,To

Or choose a CSV file

Unmapped values

Results update as you type. Larger files run when you press Update result.

Processed on your device

Your result

LOCAL & PRIVATE

Your result will appear here.

Your inputs stay in this browser. Nothing is uploaded or saved.

A clear answer. Here’s how.

Maps exact case-sensitive From values to To values simultaneously. Duplicate From keys are rejected; empty mappings are allowed. Unmatched values follow the chosen keep/blank/error rule. This replaces complete cells and preserves identifiers; it does not use patterns, trim text or perform sequential find-and-replace.

See a worked example

Worked example

A fixed demonstration, separate from the values you enter above.

Your CSV

ID,Name,Team,Amount,Date
001,Ada,Design,120,2026-01-05
002,Sam,Writing,80,2026-01-06
003,Jo,Design,150,2026-01-07

Column separator

Comma

Column to recode

Team

Value map: From,To

From,To
Design,Creative
Writing,Editorial

Unmapped values

Keep original

Example result

Example result
ID	Name	Team	Amount	Date
001	Ada	Creative	120	2026-01-05
002	Sam	Editorial	80	2026-01-06
003	Jo	Creative	150	2026-01-07

Exact, case-sensitive cell values are mapped simultaneously. No substring or pattern replacement.