CSV Price History to Excel Without Errors

Double-clicking a price CSV in Excel can change dates and drop precision. Converting it first keeps the values as they are.

Open the CSV to Excel converter

Open the CSV to Excel converter, drop the file and turn on type detection so prices and volumes become numbers and dates become dates. Keep symbols as text.

Excel gets a real .xlsx file with a bold, frozen header row. A sheet holds at most 1,048,576 rows, so check the row count first.

Long histories pass the row limit quickly: a minute-bar history for a few years is already too long. Filter to the symbols and dates you need first, or keep the full history as CSV or Parquet.

Everything runs in your browser and nothing is uploaded.

Open the CSV to Excel converter

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How to use the CSV to Excel converter: step by step

  1. Open the CSV to Excel converter.
  2. Drop the file and turn on type detection.
  3. Check the row count against the limit.
  4. Download .xlsx.

When to use the CSV to Excel converter

  • Look at prices in a spreadsheet
  • Make a chart from a price file
  • Share a sample with colleagues
  • Check dates and decimals by eye

Example

Input: id,name,age 1,Ada,36 2,Alan,41

Output: A Excel file with the same columns (id, name, age) and typed values.

Frequently asked questions

How do I convert CSV to Excel?

Drop your CSV file (or paste the data), check the options, click Convert and download the Excel result.

How big can a file be?

It depends on your device. A few hundred MB usually works.

Which conversions does the Format Converter support?

Any direction between JSON, CSV, Parquet and Excel (.xlsx), for one file or a whole folder. Nested JSON is flattened into columns such as address.city. For Excel, the first sheet is read; old .xls files are not supported.

Why did my number or date change after converting?

Types are detected from the values. Turn off "Detect types" to keep everything as text, which also keeps leading zeros in IDs and phone numbers.

Tip: If the history is over 1,048,576 rows, filter it first. Excel would not show the rest.