📗Excel Data Analyzer

Analyze Every Sheet in an
Excel File No Excel Needed

Upload a .xlsx or .xls file. Every sheet is detected automatically switch between them to get a full statistics table (count, distinct, min, max, mean, median, mode, std dev, sum) plus duplicates, missing values and outliers, instantly.

✓ XLSX and XLS supported✓ Multi-sheet detection✓ Full statistics table✓ No upload to server✓ Free forever
📗

Drop your Excel file here

.xlsx and .xls files your file never leaves your browser

Multi-sheet workbooks supported. No row limit.

How to use

How to Analyze an Excel File Without Opening Excel

This tool reads .xlsx and .xls files directly in your browser using SheetJS. No Excel, no Google Sheets, no installation.

1
📂

Upload your workbook

Click or drag your .xlsx or .xls file onto the upload area. The file is read locally nothing is sent to any server.

2
📄

Pick a sheet

Every sheet in the workbook is detected and shown with its row and column count. Click any sheet to analyze it.

3
📊

Review the statistics

Column Statistics gives count, distinct, nulls, fill rate, min, max, mean, median, mode, std dev and sum for every column, instantly.

4
⬇

Fix and export

Remove duplicates with one click in Issues Summary, then download the sheet as XLSX or CSV.

Built for real workbooks

Multiple Sheets? No Problem.

Most "analyze your spreadsheet online" tools quietly read only the first sheet and ignore the rest fine for a single export, useless for a real workbook with a "Raw Data" tab, a "Summary" tab and three regional breakdown tabs.

This tool detects every sheet the moment your file loads and shows each one's row and column count immediately, so you can see at a glance which tab actually holds the data you care about. Click any sheet to switch its statistics table, issue summary and data preview are computed independently, and switching back and forth preserves any cleanup you have done on each sheet separately.

📄

Every sheet listed

Row × column counts shown for all sheets on upload

🔄

Independent analysis

Switching sheets re-runs stats, issues and preview for that sheet only

🧮

No formulas

Count, distinct, mean, median, mode, std dev, sum computed instantly

⬇

Per-sheet export

Download just the sheet you analyzed as XLSX or CSV

Time saved

What This Tool Does That Takes Far Longer in Excel

Excel is built for data entry and manual analysis, not automated quality checking. Getting a full statistical picture of a dataset usually means writing several formulas per column or building a pivot table.

TaskThis ToolIn Excel
Count, distinct, min, max, mean, median, mode, std dev, sumFull table, automatic on uploadUp to 10 separate formulas per column
See null count per columnShown automaticallyCOUNTBLANK formula per column
Find all duplicate rowsInstant, with one-click removalConditional formatting or Remove Duplicates tool
Switch between sheetsClick a sheet pill, re-analyzed instantlyClick each tab and re-run formulas
Detect type mismatchesAutomatic, with example valuesNot practical without VBA
Export results as XLSX or CSVOne clickSave As, choose format
FAQ

Frequently Asked Questions

Can I analyze an Excel file online without installing Excel? +
Yes. This tool reads .xlsx and .xls files directly in your browser using SheetJS. No Excel, Google Sheets or other software is required. Upload your file and get sheet detection, column statistics, duplicate analysis and an issue summary immediately.
Does this tool support Excel files with multiple sheets? +
Yes every sheet is detected on upload and listed with its row and column counts. Use the sheet selector to switch between sheets; each is parsed and analyzed independently with its own statistics table, issue summary and data preview.
What column statistics does this tool calculate? +
For every column: count, distinct value count, null count and fill rate. For columns where at least 70% of values are numeric: minimum, maximum, mean, median, mode, standard deviation and sum. For text columns, the most frequent value is shown where one exists.
How does this compare to using Excel formulas like COUNTIF, COUNTBLANK and AVERAGE? +
Replicating this statistics table in Excel requires up to ten formulas per column, or a pivot table with multiple value fields configured per column. This tool computes everything for every column the moment the file loads no formulas, no helper columns.
Does this tool also check for duplicates, missing values, type mismatches and outliers? +
Yes, as condensed cards in Issues Summary: duplicate row count with one-click removal, columns below 70% fill rate, columns with type mismatches and their examples, and columns with 3-sigma outliers. For deep cleanup multiple duplicate types, per-column null-filling, or a full 0-100 quality score export as CSV and use the linked dedicated tools.
Can I download the analyzed data as Excel or CSV? +
Yes. Download XLSX writes the currently selected sheet back to a .xlsx file using SheetJS, including any duplicates you removed. Download CSV exports the same sheet as comma-separated text.
Is my Excel file uploaded to a server? +
No. The file is read as binary data directly in your browser and parsed locally with SheetJS. Nothing is transmitted anywhere, which makes this safe for confidential spreadsheets and financial models.
Can I analyze very large Excel files or workbooks with many sheets? +
There is no row limit per sheet and no limit on the number of sheets. All sheets are parsed on upload; full statistics are computed for one sheet at a time as you select it, keeping the tool responsive. Processing time depends on your device.
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