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.

Fine. Tools run on free software (ffmpeg, LibreOffice, Calibre, ImageMagick). Your files stay yours, no claims from us.

What if the conversion fails?

You get a specific error. Common causes: corrupt source, encrypted format, file too large, or an unusual variant. Open in the source app, save again, re-upload.

Spreadsheets converter

Spreadsheets converter online - dozens of formats, preserves quality, wiped from the server after a few minutes.

Runs in your browser

Drop a file, pick a target format, download. Small files convert inside your browser. Larger ones go to the server and disappear automatically.

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

From this category to others

6 pairs

XLSXCSV CSVXLSX ODSXLSX XLSXPDF XLSXLSX NUMBERSXLSX

Your privacy. Small files convert locally. Larger ones land on our server temporarily: 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 downloading.

Spreadsheets converter

Spreadsheets converter supports dozens of formats. Drop a file, pick the target, download. Small files convert inside your browser - they never leave your device. Larger ones land on our server temporarily and are wiped automatically, latest after one hour.

How to convert

Drop a spreadsheets file onto the dropzone or click and pick one.
Choose a target format - we only show ones that make sense for your file.
Hit Convert. The progress bar shows where we are.
Download the result. You can wipe it from the server the moment you have it.

When to use it

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

Frequently asked questions

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

Related tools

File Converter

Swap a file format in 3 steps. 200+ formats: images, video, audio, documents, archives, ebooks, fonts.

Spreadsheets converter

Drop a file, pick a target format, download. Small files convert inside your browser. Larger ones go to the server and disappear automatically.

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

From this category to others

6 pairs

XLSXCSV CSVXLSX ODSXLSX XLSXPDF XLSXLSX NUMBERSXLSX

Spreadsheets converter

How to convert

Drop a spreadsheets file onto the dropzone or click and pick one.

Choose a target format - we only show ones that make sense for your file.

Hit Convert. The progress bar shows where we are.

Download the result. You can wipe it from the server the moment you have it.

When to use it

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

Frequently asked questions

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