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Why CSV Files Don't Always Open Correctly in Excel
CSV is plain text — but Excel doesn't always interpret it correctly. The most common problems:
- Wrong delimiter: Excel uses your system's regional list separator. In the US it's a comma; in Germany and France it's a semicolon. If they don't match, all data lands in column A.
- Encoding issues: Double-clicking a CSV opens it with ANSI encoding. UTF-8 characters get corrupted. Import via Data › From Text/CSV to choose UTF-8.
- Leading zeros dropped: Excel auto-formats numbers, so ZIP codes like
01234become1234. Import the column as Text to preserve them. - Date format mismatches:
03/04/2024means March 4 in the US but April 3 in the UK.
The Fastest Way to Paste CSV into Excel
- Paste your CSV into the tool above and click Preview & Format.
- Click Copy for Excel — converts your CSV to tab-separated values.
- Open Excel, click cell A1, press Ctrl+V.
- Excel splits tab-separated data into columns automatically — no wizard needed.
Using Excel's Text to Columns Wizard
- Select the column with your CSV data.
- Go to Data › Text to Columns.
- Choose Delimited › Next.
- Check your delimiter › Next.
- Set column formats (Text for ZIP codes) › Finish.
CSV vs TSV for Excel
| Format | Delimiter | Excel Compatibility |
|---|---|---|
| CSV | Comma | Regional — may fail in EU locales |
| CSV (semicolon) | Semicolon | Works in EU Excel locales |
| TSV | Tab | Always works — paste directly |
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Tab-separated values work universally in Excel regardless of regional settings, because Excel never uses tabs as a list separator.