Fix Broken Excel Formulas Without Learning Formulas
Upload your spreadsheet. CTS finds missing or inconsistent formulas, restores proven patterns from nearby rows, preserves formatting, and shows every change before anything is changed.
Upload your spreadsheet once. Clean That Sheet checks for repair formulas and other common cleanup problems, then shows you a free preview before anything is changed.
Free preview first. Full cleanup only if it helps.
Upload your file to see an issue summary, duplicate groups, blank rows, sample cleaned rows, and cleanup notes. If the preview looks useful, unlock the full cleaned file and change report for $4.99.
Drag & drop your file or screenshot, or browse
Accepts .xlsx, .xls, .csv, .png, .jpg, and .pdf · up to 50 MB
Tip: upload the actual spreadsheet file, not Excel temporary files that start with ~$.
Free scan + cleaned sample. No charge to preview.
No signup. Original file unchanged. View Trust & File Handling
On mobile, screenshots and CSVs work best. Larger Excel files are easier from desktop.
Not ready to upload? See a Sample Formula Repair
Built for
Built for business professionals cleaning real spreadsheet messes.
Clean That Sheet is made for analysts, bookkeepers, admins, operators, founders, finance teams, and spreadsheet-heavy professionals who need to clean files before sending, importing, merging, or reporting.
- Analysts
- Bookkeepers
- Admins
- Operators
- Founders
- Finance teams
- Spreadsheet-heavy workflows
Restore broken formulas before the wrong number gets carried forward.
You do not need to choose the perfect tool first. Upload your Excel or CSV file, review what CTS finds, and unlock only when you are ready.
CTS can also check for duplicate rows, blank rows, spacing issues, inconsistent formatting, messy headers, date cleanup, imported-data problems, and more.
Not sure what your file needs? See everything CTS can check.
How Clean That Sheet works
A finished file, not a conversation. General AI tools can help you think through a spreadsheet problem. Clean That Sheet is built to help you finish the urgent, repeatable cleanup job.
- Step 1
Upload
Drop in a spreadsheet, CSV, screenshot, or PDF.
- Step 2
Preview
See what CTS would clean before you commit.
- Step 3
Download
Get a cleaned copy when it looks right.
Preview before you pay
How a general chat tool compares to Clean That Sheet for the same cleanup job.
With a chat tool
With Clean That Sheet
Explain the problem and write prompts
Upload the file
Clarify what should be cleaned
Preview what CTS would clean
Check whether the output is usable
Download a cleaned copy
Figure out what changed
Get a Change Report
No prompts. No back-and-forth. Get your file ready before you import, merge, send, or submit it.
What Clean That Sheet actually does
Built for messy real-world files. If it has data in it, there is a good chance we can help.
Supported files
- Excel files (.xlsx, .xls)
- CSV exports
- Screenshots (.png, .jpg)
- PDF report tables
Common cleanup outcomes
- Duplicate rows removed or flagged
- Blank rows and empty columns cleared
- Dates and number formats standardized
- Extra spaces and casing cleaned up
- Invalid emails and obvious errors flagged
- Original structure and headers preserved
- Preview flags messy cells before payment.
- Duplicates, blanks, formatting issues, and invalid emails are easier to spot.
- You decide whether the cleanup is worth unlocking.
- Tested on messy exports, contact lists, transaction sheets, and screenshot cleanups.
See the cleanup in action
Two missing formulas restored from the surrounding pattern. Hard-coded row 4 is flagged, not changed.
Before
| A (qty) | B (price) | C (total) |
|---|---|---|
| 2 | 10 | =A2*B2 |
| 3 | 10 | (blank) |
| 1 | 10 | =A4*B4 |
| 5 | 10 | 50 |
| 4 | 10 | (blank) |
After
| A (qty) | B (price) | C (total) |
|---|---|---|
| 2 | 10 | =A2*B2 |
| 3 | 10 | =A3*B3 (restored) |
| 1 | 10 | =A4*B4 |
| 5 | 10 | 50 (flagged for review) |
| 4 | 10 | =A6*B6 (restored) |
Spreadsheets break in quiet ways. A formula goes missing in one row because someone pasted a value over it. A column of totals is mostly =SUM(B2:D2) but a few rows are blank, hard-coded, or were typed in by hand and silently drifted. The numbers still look fine, until they don't, and by then you're scrolling 4,000 rows trying to find which cells lost their formula. Formula Repair is built for exactly that situation.
Upload the file. We scan every cell, find columns that already use a clear, repeated formula pattern, and restore the pattern into blank cells inside that range while preserving relative cell references. If a row's formula breaks the surrounding pattern, or a cell is a hard-coded value sitting inside an otherwise-formula column, we flag it as Needs review and do not change it. CTS never invents a formula when no reliable nearby pattern exists.
You see every restored cell before downloading. Each entry shows the sheet, the cell address, what was there before, the exact formula we restored, and the confidence level. Cell formatting, number formats, column widths, and frozen panes are kept untouched. The preview is free. Pay only to download the repaired spreadsheet.
This is the cleanup step that turns a partially broken workbook back into a workbook you can trust. It's faster than auditing rows by hand, safer than running a macro that overwrites everything, and it won't touch cells where the right answer isn't obvious from the surrounding data.
Want cleaner files with less work?
Get occasional updates as Clean That Sheet adds more ways to fix messy spreadsheets.