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CSV Column Type Profiler

Classify each column as numeric, ISO date, or text without modifying leading-zero identifiers.

Enter your values

Your inputs are processed locally. Review the method and limitations before relying on the estimate.

First row must contain these exact column names: id, date, total. Your text stays in this browser. Export JSON/CSV for your own backup; no automatic cloud saving.

Local save is optional and stays on this device; do not save sensitive information on shared devices.

How does CSV Column Type Profiler work?

Classify each column as numeric, ISO date, or text without modifying leading-zero identifiers.

Worked example

Edit the sample rows, process them locally, inspect validation results and download the output.

Frequently asked questions

Is my data transmitted to Tools for Daily?

No. The tool is browser-local; there is no application upload request.

Are the results permanently stored?

No. Export a copy. Any optional browser-only save remains on this device and can be cleared.