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Free tool, results in seconds
Upload a spreadsheet and get an instant health score, the issues that will break your reports, and plain English fixes.
How it works
Excel or CSV. Pick the sheet if there are several.
Four scores and a ranked list of issues in seconds.
Plain English steps, or ask us to fix it for you.
Drag your spreadsheet hereCheck a spreadsheet
or choose a file from your computerChoose an Excel or CSV file from your phone
What you get
Private by design. Your file is checked in your browser and is never uploaded to our servers.
What we check
A chart is only as right as the spreadsheet behind it.
Questions
Something else? Ask us directly.
Yes. The check runs entirely in your web browser. Your file is never uploaded to our servers. If you choose to get the full findings by email, we send only the scores and findings, never the contents of your file.
Excel workbooks (.xlsx) and CSV files up to 10 MB. If your workbook has several sheets, you choose which one to check. Older .xls files need to be saved as .xlsx first.
The score combines four areas: completeness, consistency, uniqueness, and structure. 85 or above means the data is in good shape for dashboards and AI tools. Below 50 means reports built on it are likely to show wrong numbers.
AI assistants answer questions from the data you give them. If the same customer appears twice or numbers are stored as text, the AI will confidently give the wrong answer. Clean data is the foundation for useful AI.
A person reviews your results and your sheet structure, then sends a written report with a prioritised fix plan, time estimates, and recommendations for your reporting setup.
Go further
The £49 expert report ranks every issue by how much it affects your numbers, with time estimates for each fix. The £49 comes off any project.