> Paint the cells others may type in, and every formula and total is locked for you. # XLSX Locker Paint the cells others may type in, and every formula and total is locked for you. Add a password to open for real encryption, or lock and unlock a whole folder of workbooks at once. $1.99 · lifetime · One payment. No subscription. 3.0 from 2 ratings ## See it in action ![Hatched cells are locked. Green cells stay open.](https://evlarsoft.com/apps/xlsx-locker/s5.jpg) Hatched cells are locked. Green cells stay open. ![Protect every sheet, only the sheets with formulas, or just one.](https://evlarsoft.com/apps/xlsx-locker/s2.jpg) Protect every sheet, only the sheets with formulas, or just one. ![Add a password to open, and the workbook is encrypted.](https://evlarsoft.com/apps/xlsx-locker/s3.jpg) Add a password to open, and the workbook is encrypted. ![Lock or unlock a whole folder of workbooks at once.](https://evlarsoft.com/apps/xlsx-locker/s6.jpg) Lock or unlock a whole folder of workbooks at once. ![Unlock them just as fast. A wrong password is flagged on its file.](https://evlarsoft.com/apps/xlsx-locker/s1.jpg) Unlock them just as fast. A wrong password is flagged on its file. ## About XLSX Locker XLSX Locker protects the formulas in your spreadsheets, and puts a password on the workbooks themselves. ## Paint the open cells Open a workbook and its first sheet appears as a real grid. Formula cells are hatched with a small lock. Cells people are likely to fill in are already painted green. Pick a brush and drag across cells to open them or lock them again. A line under the sheet counts what will be locked and what stays open. ## Formulas lock themselves With "Lock every formula" on, every formula stays locked, even inside cells you painted open. Totals, rates and lookups can't be typed over by accident. ## Choose the sheets Protect every sheet, only the sheets that have formulas, or one sheet on its own. The rest stay fully editable. ## A real lock when you need one Sheet protection keeps honest people from breaking a sheet. It stops accidents, not a determined person. When the numbers are private, turn on "Also need a password to open". The workbook is then encrypted, and Excel shows nothing until the password is typed. ## Lock or unlock a whole folder The original job still works. Drop workbooks or a folder, type a password, and click Lock or Unlock. Each file shows its own status as the batch runs. ## Your originals stay put By default the app saves a copy beside the original, named "(protected)", "(locked)" or "(unlocked)". Turn that off to replace the original instead. ## Private Everything happens on your PC. There is no account, and nothing is uploaded. Workbooks you locked with an earlier version still open and unlock as before. ## Features - Paint the cells other people may type in. Every other cell is locked - Every formula is found and locked for you, on every sheet - Hatched cells are locked, green cells are open, so you see the result before you save - Protect every sheet, only the sheets with formulas, or just one - Add a password to open, and the workbook is encrypted - Lock or unlock many workbooks at once, or drop a whole folder - Each file shows Ready, Working, Done or Wrong password as the batch runs - Saves a copy beside the original, or replaces it if you turn that off - Opens .xlsx, .xlsm and .xls workbooks - Opens a workbook that already has a password to open, once you type it - Everything happens on your PC. Nothing is uploaded - Light and dark themes, or match Windows ## Details Works on Windows 10 (1809 or later) and Windows 11 Download About 54.4 MB Version 2.0.2, updated October 2026 First released August 2023 Price $1.99, lifetime license. No subscription. Category Utilities & tools ## What's new in 2.0.2 - New: protect formulas. Paint the cells others may type in, and every formula is locked for you - New: protect every sheet, only the sheets with formulas, or just one - New: add a password to open while you protect - New: drop a whole folder of workbooks - The batch Lock and Unlock you know still works, and workbooks you locked before still unlock - Fixed: Lock and Unlock no longer overwrite your original. A copy is saved beside it unless you choose to replace it - Fixed: replacing an original is now written safely, so a failed save can't leave a half-written file ## Questions Anything else? [Ask us](https://evlarsoft.com/contact?topic=support&app=XLSX%20Locker) ### Which versions of Windows does it run on? Windows 10 (version 1809 or later) and Windows 11. ### Is it a subscription? No. XLSX Locker is a one-time purchase of $1.99, and updates are included. ### How do I get it? EvlarSoft apps are moving to direct downloads from this site. Ask to be notified and we will email you as soon as XLSX Locker is ready to download. ## More from EvlarSoft [![](https://cdn.evlarsoft.com/related/v1/icons/xlsx-editor.png)**Evlar XLSX Editor**Open, edit and save Excel workbooks and CSV files for free.](https://evlarsoft.com/apps/xlsx-editor)[![](https://evlarsoft.com/apps/doc-file-locker/icon.png)**Doc File Locker**Password-protect a Word document, with a separate locked copy for each person you send it to.](https://evlarsoft.com/apps/doc-file-locker)[![](https://cdn.evlarsoft.com/related/v1/icons/pdf-file-locker.png)**PDF File Locker**A password on, or a password off.](https://evlarsoft.com/apps/pdf-file-locker) --- Source: https://evlarsoft.com/apps/xlsx-locker