Does XLSX → CSV lose quality?

The target format compression is neutral (lossless or container-only) - neither degrades nor improves quality.

XLSX → ODS and ODS → XLSX - yes. XLSX → CSV - no (CSV is plain text, formulas get replaced with their values).

XLSX → CSV: first sheet only. XLSX → ODS and ODS → XLSX: all sheets.

Read-only. Apple uses a proprietary format - we write to XLSX / CSV / ODS.

XLSX → ODS - yes. XLSX → PDF - yes, as images. XLSX → CSV - no (CSV has no chart concept).

Is the conversion safe?

Yes. Small files convert inside your browser - never uploaded. Larger ones land on our server temporarily and are wiped automatically: 200 MB after 10 min, 100 MB after 20 min, 50 MB after 30 min, smaller after one hour. You can also delete them instantly after download.

Yes - 200 MB max per file. Larger files get rejected for performance and cost reasons.

Do you preserve original quality?

Depends on the pair. Lossy compression (e.g. JPG, MP3) always trims something - we set sensible defaults. Lossless (FLAC, PNG, ZIP) keeps everything 1:1.

Do I need an account?

No. The converter works right away - no signup, no login, no payment.

XLSX to CSV converter

XLSX to CSV converter online. Free, no watermarks, no account.

Runs in your browser

XLSX → CSV converter

XLSX to CSV conversion in 3 steps: upload, click convert, download.

Files auto-delete from our server

Anything you upload is wiped 3 minutes after you close this tab or leave the tool. Protects your privacy and keeps our disks clean.

Drop a file here or click to pick one

The file goes to our server, gets converted, and is wiped automatically.

Up to 200 MB per file

Your privacy. Small files convert locally in your browser. Larger ones land on our server temporarily and are wiped automatically, latest after one hour. You can also delete them instantly after downloading.

Convert XLSX to CSV

XLSX to CSV converter: upload, click convert, download the result. Free, no watermarks, no account. Small files convert inside your browser (never uploaded). Larger ones go to our server and disappear automatically after a few minutes. Hit "Delete now" to wipe them instantly after download.

How to convert

Pick your XLSX file - drag it onto the dropzone or click to choose.
The target format CSV is already selected.
Hit Convert and wait a few seconds. Larger files take longer.
Download the result. Press Delete now to wipe the server copy immediately.

When to use it

Import elsewhere - XLSX → CSV (universal).
Backup / share - CSV → XLSX.
Open in Excel - ODS / NUMBERS → XLSX.
Reporting - XLSX → PDF.
XLSX → CSV - common case.

Frequently asked questions

converterFactory.pairDifference.xlsx_csv

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