Get the spreadsheet out of the way. Finish what you came to do.
Send the report, finish the import, hand off the client file, or meet the deadline. CTS helps with duplicates, blank rows, weird dates, and broken emails so cleanup does not become the whole job.
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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 ~$.
Upload the file that is standing between you and done.
Your original file stays unchanged.
On mobile, screenshots and CSVs work best. Larger Excel files are easier from desktop.
Whatever comes next
See what changed, then keep the work moving
Preview the cleanup, keep the original, and download a copy for the next step.
- 1
Upload your spreadsheet
Excel, CSV, screenshots, and exports all work.
- 2
Preview what CTS would clean
See issues found and a before/cleaned preview.
- 3
Download a cleaned copy
DJMixHub sponsored the download. Your original file stays unchanged.
Preview includes
- Issues found
- Before and cleaned sample
- Download a cleaned copy sponsored by DJMixHub
Sample cleanup preview
See your sheet after it gets its life together.
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
The spreadsheet is the obstacle. Your next step is the point.
Bring the file
Excel, CSV, exports, and screenshots.
See what is in the way
Duplicates, blank rows, spacing, dates, names, headers, formatting, and common import issues.
Keep moving
Use the cleaned copy for the send, import, merge, report, submission, or handoff. CTS handles cleanup, not custom business analysis.
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.
Advice from Reddit or a chat tool can suggest steps. CTS shows how those rules affect your actual file so you can decide whether the result gets you where you need to go.
“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
Need help with a different spreadsheet problem?
Clean That Sheet™ uses one upload-and-preview workflow for common spreadsheet rescue moments.
Fix a File Before You Import
Clean safe formatting issues, flag risks, and preview an import-ready file before you try again.
Fix Missing or Broken Formulas
Restore proven formula patterns from nearby rows without learning Excel formulas.
Cleaning a file for your books?
Preview spreadsheet cleanup before you hand data to your bookkeeper.
Need someone else to handle the cleanup?
For business files that need more than an instant cleanup, send them over and we’ll handle the work for you.
- Duplicate rows removed
- Names, emails, phones, and dates cleaned
- Rent rolls, tenant lists, vendor lists, and exports organized
- Simple quote before work starts
Small file? Use instant cleanup above. Bigger or messier business file? Request done-for-you cleanup.
What are you trying to get done after this sheet?
Today's cleaned download is sponsored by DJMixHub, so there is no charge after your preview.
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Clean Up My Messy Sheet — Free PreviewUpload your file for a free preview. Drag & drop, 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 Cleanup
Your original file stays unchanged. No card required.
Explore a specific cleanup
Choose the cleanup that matches what you need before the next handoff.
Frequently asked questions
- How do I clean a messy spreadsheet?
- Upload an Excel file, CSV, export, or screenshot to preview proposed cleanup changes first.
- Can I fix blank rows, duplicates, and messy data in one file?
- Yes. CTS can identify common issues including duplicate rows, blank rows, inconsistent data, and formatting problems.
- Do I pay before seeing the cleanup?
- No. Your preview is free. Download a cleaned copy after your preview.
- Where does the preview appear?
- The preview appears on screen after upload. No email is required.
- How fast is it?
- Most previews appear shortly after upload. Larger or more complex files may take longer.
- What file types work?
- Excel, CSV, screenshots, and PDFs are supported.
- Is my file private?
- Yes. Your file is only used to generate your preview and cleaned download. It is never shared or used for training. Please remove SSNs, passwords, and full account numbers before uploading.
- What if my file is too complex?
- Standard cleanups have a single download step. If your file needs custom work beyond the instant preview, we'll explain the next step before any work begins.
Questions people ask before cleaning a spreadsheet
- How do I clean a CSV file before importing it?
- Drop empty rows, trim stray whitespace, standardize dates and emails, and check for duplicates hidden by casing or spacing. Uploading the file first shows each of those fixes in a preview so nothing changes until you're sure.
- I found a Reddit tip to use Remove Duplicates. How do I make sure it does not delete the wrong rows?
- Sort so the row you want to keep is on top and only tick the columns that truly define a duplicate. If you want a safety net, upload the file and the preview shows which rows would be collapsed and which would be kept before anything is deleted.
- What is the safest way to remove blank rows in Excel?
- Filter or sort by a key column and delete truly empty ranges one at a time. On messy sheets, uploading the file first is safer, the preview flags near-empty rows (stray spaces, invisible characters) that Go To Special skips.
- Reddit or ChatGPT gave me a cleanup formula. How can I preview what will actually change?
- Community and chat-tool advice is usually right in principle but risky on your own file. The free preview applies the standard cleanup rules to a sample of your data so you can see the before-and-after on real rows before you commit.
Still have a question? Email help@cleanthatsheet.com.
Built by an independent founder in Chicago to make spreadsheet cleanup faster for business owners, freelancers, and small teams.
Clean That Sheet™ is an Almeyda Holdings LLC project.