# ODS Viewer

Free online ODS viewer for OpenDocument spreadsheets. Open .ods and .fods files directly in your browser without uploading them.

> Canonical page: https://elysiatools.com/en/viewers/ods

- **Category:** Spreadsheets

- **Supported formats:** .ods, .fods

## Overview

This ODS viewer renders OpenDocument spreadsheets locally in your browser. The .ods format is the open standard used by LibreOffice Calc, OpenOffice, and other suites. Pick a sample or choose your own .ods or .fods file to inspect rows and formulas without any dedicated software.

## When to use

- You received an .ods spreadsheet and only need to read it.
- You want to preview an OpenDocument file before importing it elsewhere.
- You are on a device without LibreOffice Calc or a compatible app.

## How it works

- Select a built-in sample or choose your own .ods or .fods file.
- The viewer parses the OpenDocument format and renders it in the browser with no upload.
- Read the data, then switch samples or load another file any time.

## Use cases

- Reviewing OpenDocument spreadsheets from colleagues or open-source projects.
- Previewing a LibreOffice Calc file on a Windows or macOS machine.
- Checking tabular data before converting to another format.

## Samples

- **Simple ODS Spreadsheet**: A compact ODS spreadsheet for basic import and parsing checks
- **Basic ODS Spreadsheet**: General-purpose ODS sample for worksheet structure validation
- **Financial ODS Spreadsheet**: Financial-style ODS sheet for report export and calculation testing
- **Flat ODS Spreadsheet (FODS)**: Single-XML Flat ODS file for text-based parsing and version-control testing

## Frequently asked questions

### Is this ODS viewer free?

Yes. It runs in your browser for free and needs no registration or installation.

### Are my .ods files uploaded?

No. Files opened from your device stay on your device. Only public sample files come from the server.

### What is an ODS file?

.ods (OpenDocument Spreadsheet) is an open, XML-based standard for spreadsheets, maintained by OASIS and standardized as ISO/IEC 26300. It is the native format of LibreOffice Calc and Apache OpenOffice Calc.

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