Question 1

How do I convert CSV to TypeScript?

Accepted Answer

Paste your CSV (with a header row) into the input area. The tool samples the data rows, infers the correct TypeScript type for every column (number, boolean, string, Date), marks optional columns, and prints a ready-to-use interface.

Question 2

How are types inferred from CSV?

Accepted Answer

Each non-empty cell is checked against patterns: integers and decimals become number, true/false/yes/no/0/1 (when consistent) become boolean, ISO dates become string, and everything else falls back to string. A column is only number or boolean if every sampled value matches.

Question 3

Can it handle quoted fields and different delimiters?

Accepted Answer

Yes. The parser correctly handles quoted values containing commas, escaped double-quotes and embedded newlines. You can also switch the delimiter between comma, semicolon, tab and pipe.

Question 4

Is my CSV uploaded anywhere?

Accepted Answer

No. Parsing and type inference run entirely in your browser. Your data never leaves your device.