Free online ASC to XLSX converter
Convert database ASC text exports into editable XLSX worksheets.
Convert ASC to XLSX online - free
Your file is processed instantly and deleted as soon as you download it.
Import a file from a URL
Paste a direct link to the file. We download it to our server and it is converted exactly like an upload.
How it works
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Upload your .asc file
Click to browse to select your file you want to convert or simply drag & drop your file into selected area.
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Perform .asc to .xlsx conversion
After successful file upload, click to convert when you are ready.
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Download converted .xlsx file
Conversion result is ready to download.
Conversion statistics: ASC to XLSX
Updated November 14, 2026, from conversions on 101convert.com
How to convert asc to xlsx file
- Text files
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101convert.com assistant
20h
Database exports saved as ASC files often need to be opened in spreadsheet software for review, editing, or sharing with people who use Excel. Converting the text data to XLSX makes it easier to sort, filter, and format in a spreadsheet.
What the ASC format is
In database contexts, ASC generally refers to a plain-text ASCII export. Database applications may use it to transfer records as delimited fields or as fixed-width columns. The extension does not define a single layout, so separators, character encoding, and column structure depend on the program that created the file.
What the XLSX format is
XLSX is the spreadsheet format used by Microsoft Excel and supported by programs such as LibreOffice Calc. It stores data in worksheets with typed cells, formatting, filters, and formulas, making it suitable for editing and sharing tabular records.
How to convert ASC to XLSX
Online on 101convert.com
- Open the ASC-to-XLSX converter on 101convert.com and upload the ASC file or files.
- Run the conversion.
- Download the resulting XLSX file.
Multiple files can be converted in one batch. The page shows the per-file size limit.
Offline with desktop software
LibreOffice Calc is free and runs on Windows, macOS, and Linux. Open the file with File → Open; in the text import dialog, choose the character set and separator or fixed-width layout that matches the ASC data, then confirm the preview. Save the imported sheet with File → Save As and select Excel 2007–365 (.xlsx) as the file type.
Microsoft Excel is a commercial option for Windows and macOS. Import the file using Data → From Text/CSV, set the delimiter and data types in the import preview, and load the records into a worksheet. Choose File → Save As and save as .xlsx.
Quality and compatibility
Check the import preview before saving: a wrong delimiter can combine fields or split values into extra columns, and an incorrect character set can corrupt text. Set identifier columns such as account numbers to text to preserve leading zeros; verify dates and decimal values because spreadsheet software may interpret them according to locale. Conversion transfers tabular values, not database relationships, queries, or application-specific metadata.
Note: This asc to xlsx conversion record is incomplete, must be verified, and may contain inaccuracies. Please vote below whether you found this information helpful or not.
ASC vs XLSX: format comparison
How the ASC and XLSX formats compare on the properties that matter most for this conversion.
| Property | .ASC ASCII text file | .XLSX Microsoft Excel Open XML Spreadsheet |
|---|---|---|
| Open standard | — | Yes |
| Compression | Uncompressed | Both |
| Typical file size | Very small | Medium |
| Opens in a web browser | No | Partial |
| Further editing | Easy | Easy |
| Metadata support | None | Extensive |
| Plain-text readable | Yes | No |
| Best used for | Editing and post-production | Data exchange |
| Introduced | — | 2007 |
| Developer | — | Microsoft |
| MIME type | text/plain | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
Information about file extensions and file types is provided by File-Extensions.org
Frequently asked questions
Is the ASC to XLSX converter free?
Yes, converting ASC to XLSX on 101convert.com is completely free. No registration, email address or installation is required. If you need a higher file size limit or want to convert more files at once, see our plans.
How large can my ASC file be?
You can upload ASC files up to 3 MB and convert up to 3 files at once in a single batch. With a paid plan the limit is up to 50 MB per file and 20 files at once, see our plans.
What happens to my uploaded files?
Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.
Do I need to install any software to convert ASC to XLSX?
No. The ASC to XLSX conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.
Did the conversion fail?
In most cases, the cause is an incorrect file format. Please upload a valid ASC file for this ASC to XLSX conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.