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.

No. Everything runs locally in your browser.

Process files up to the browser memory limit.

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.

Unlocking Tool Engine...

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.

Continue working with our suite of free data utilities.

Convert CSV files to formatted Excel workbooks (.xlsx). Processed entirely in your browser for 100% data privacy and zero fil

Convert Excel workbooks (.xlsx, .xls) to CSV files — all sheets or selected. Fast, private, and secure browser-based tool wit

Generate realistic fake data: names, emails, addresses, and more. Export as CSV. Securely process files in your browser memor