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.
Whatever needs to happen next, repair formulas should not be the reason it stalls. Upload once and preview what CTS would clean before anything changes.
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 people with something to finish, not a spreadsheet to babysit.
Analysts, bookkeepers, admins, operators, founders, and finance teams use CTS to get files ready for the send, import, merge, report, submission, or handoff that actually matters.
- 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 diagnose the sheet before you can move forward. Upload the Excel or CSV file, review what CTS finds, and unlock only when the result helps you reach the next step.
CTS checks duplicate rows, blanks, spacing, inconsistent formatting, messy headers, dates, imported-data problems, and other things that can get between the file and its destination.
The spreadsheet is one step. Your goal is what comes next.
A finished report, successful import, clean handoff, or client-ready file is the point. Clean That Sheet™ helps with the repeatable cleanup step so you can get there without making spreadsheet repair your whole afternoon.
- Step 1
Bring the file that is in the way
Drop in a spreadsheet, CSV, screenshot, or PDF.
- Step 2
See what needs attention
Preview what CTS would clean before you commit.
- Step 3
Keep the work moving
Get a cleaned copy for whatever needs to happen next.
The cleanup is one step, not the whole job
Preview the actual file, understand the changes, and keep moving.
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 past the cleanup step and back to the import, report, submission, or handoff.
What CTS gets out of your way
Bring the messy real-world file. Leave with something ready for the next person, platform, or decision.
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.
“We've found this tool to be a great fit for the kind of spreadsheet work we do at Lombard Toyota. It helps turn large, messy data exports into something much easier to read and work with, without requiring a lot of manual cleanup.
What we especially like is that it seems to understand the structure of dealership data instead of treating every column the same. That saves time and makes the finished spreadsheets much more useful for our day-to-day work.
Definitely a helpful tool for an automotive dealership working with a lot of data.”
Lombard Toyota
Google Workspace Marketplace™ Review, August 13, 2026
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.