A ledger desk for spreadsheets — open an Excel workbook, fix the numbers, save it back. No Office, no upload, no account. The quick-edits sibling of Draft Desk.
🔒 Spreadsheets are opened and saved entirely in your browser. Nothing is uploaded.
Open an .xlsx, change the cells, save it back as a real .xlsx that opens cleanly in Excel, LibreOffice, Google Sheets, and Numbers. Values, formulas, multiple sheets, dates, and column widths all survive the trip. CSV files open and save too, with the delimiter auto-detected.
Start a cell with = and write it like you would in Excel:
=SUM(B2:B9), =IF(C2>100,"over","under"), cell math like
=A1*1.21, references across sheets like =Sheet2!D4.
The engine is hand-written and covers the everyday set — SUM, AVERAGE, MIN, MAX,
COUNT, COUNTA, COUNTIF, SUMIF, IF, AND, OR, NOT, IFERROR, ROUND, ROUNDUP, ROUNDDOWN,
INT, ABS, SQRT, POWER, MOD, LEN, LEFT, RIGHT, MID, UPPER, LOWER, TRIM, CONCAT —
plus & for joining text. Inserting and deleting rows or columns
rewrites your formula references the way Excel would.
This is deliberately a quick-edits editor, not an Office replacement. Open a heavily-produced workbook — charts, pivot tables, cell colors, merged cells, macros, exotic formulas — and those parts are simplified down to this editor's vocabulary when you save: your values and everyday formulas, on clean sheets. For fixing a price list or balancing a small ledger, that's exactly what you want; for the quarterly model with 40 tabs of pivots, use the real thing. The editor autosaves your work-in-progress to your own browser as you type.
#NAME? here but the formula text itself is preserved and saved back intact — Excel recalculates them on open.YYYY-MM-DD; type them that way and they save as true Excel dates.Part of K-Engine Local Tools — free, privacy-respecting utilities that run on your device. The ZIP and XLSX readers and writers are hand-written; view-source on this page and you're reading all of it. MIT licensed, from the K-Engine workshop · download the source.