Quick CSV edits
Open a small CSV file, fix values, sort a column, and download the edited CSV.
Online spreadsheet editor
Ready. Edit cells or open a CSV file.
A1
Basic formulas supported: SUM, AVERAGE, MIN, and MAX. Use cell ranges like =SUM(A1:A4).
Your files are processed locally in your browser and are not uploaded to our servers.
See examples
Simple budget table
Create a small table with totals using formulas such as SUM or AVERAGE.
Data cleanup before import
Paste rows from another spreadsheet, review them in the browser, then export CSV.
About this helper
This online spreadsheet editor embeds an open-source browser spreadsheet grid for simple tables and CSV files. It is designed for quick edits, lightweight formulas, sorting, filtering, copy and paste, and local CSV export. It is not a full replacement for large desktop spreadsheet applications or advanced XLSX workbooks.
Are my spreadsheet files uploaded?
No. Files are read by your browser and are not uploaded to Heavens Help servers.
Which files can I open in this first version?
The first version opens CSV files. XLSX support can be added later with a dedicated client-side library.
Which formulas are supported?
The embedded spreadsheet supports common formulas. This page highlights simple formulas such as SUM, AVERAGE, MIN, and MAX for the first version.