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Excel & CSV Analyzer

Open CSV or xlsx files to search, filter and sort, see per-column statistics, and a simple pivot (group totals) with bar charts. Files are processed only in this browser and never uploaded.

Files are read only inside this browser and are never uploaded to a server.

Add a CSV, TSV or xlsx file to open it as a table. CSV files saved by Korean Excel (CP949) are read automatically.

Good to know

  • .xls (old Excel format), password-protected files and macro files (.xlsm) are not opened. Save as .xlsx or CSV in Excel first.
  • Formulas are not calculated; the last result saved in the file is shown. Formatting (colors, fonts), charts and pictures are not read.
  • Files up to 20MB, 200,000 rows and 500 columns are read; anything beyond is cut off and flagged.
  • Columns that look like numbers or dates are only guessed for statistics; values are never changed (leading zeros in postal codes stay).
  • When saving CSV, text cells starting with =, +, - or @ get a leading apostrophe because Excel could run them as formulas (you can turn this off).

FAQ

Is my file uploaded?

No. Your browser reads the file itself and this page has no code that sends files. Even xlsx is read in the browser, not on a server.

Korean text in my CSV looks garbled.

Switch the encoding to EUC-KR (CP949). Korean Excel “CSV (comma delimited)” is usually that format. Auto-detection tries it first.

Are Excel formulas calculated?

No. The last calculated value saved in the file is shown.

How to use this tool

Use it to look through a CSV or xlsx file quickly. Search, filter and sort, see per-column statistics, and build a simple pivot (grouped totals) and bar chart. The file is not uploaded and is processed only in this browser.

Frequently asked questions

Which files can I open?

CSV and xlsx files.

What analysis can I do?

Search, filter and sort, per-column statistics, a simple pivot (grouped totals) and a bar chart.

Is my file uploaded?

No. The file is not uploaded and is processed only in this browser.

See all tools

Unit converter

Convert length, weight, temperature, area and volume, including traditional Korean units such as pyeong, geun, don and ja.

Exchange rates & alerts

Convert between major currencies at the Korea Eximbank base rates, and get an email when a rate you care about is reached.

Color Converter

Convert HEX, RGB, CMYK and HSL color codes to each other, and check text/background contrast (WCAG) and palette combinations.

Quote & statement maker

Enter your items to get a document preview with supply value, VAT and total (with the amount in Korean words), then print it or save it as a PDF. Nothing you enter is sent to a server.

Salary & Payroll Calculator

Take-home pay after Korean social insurance and income tax, weekly-holiday allowance, severance pay and unemployment benefit. Uses that year's rates; nothing you enter leaves this browser.

Real Estate Calculators

Korean brokerage fee caps, home acquisition tax, jeonse-monthly rent conversion and LTV/DSR loan limits. Reference calculations using that year's rules; nothing you enter leaves this browser.