What is the file size limit?

Process files up to the browser memory limit.

Can I add multiple formula columns?

Yes — apply multiple formulas in sequence.

Evaluate Excel formulas on CSV data without opening Excel. Processed entirely in your browser for 100% data privacy and zero

Your files never leave your device. Processed locally. 100% private.

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Complete your task perfectly in just three straightforward steps.

Drop your CSV file.

Write an Excel-style formula referencing column names e.g. =A * B + C.

Download the CSV with the computed formula column added.

Everything you need to know about the Excel Formula Evaluator.

What functions are supported?

Arithmetic, IF, VLOOKUP, SUMIF, COUNTIF, DATE functions, and 100+ more via formulajs.

Can I reference column names?

Yes — use column header names directly in your formula.

Is my file uploaded?

No. Everything runs locally in your browser.

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