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ZWO to FIT Converter

Convert workout files to and from Zwift ZWO format. Perfect for indoor training.

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Click to upload or drag and drop

ZWO files onlyMax file size: 1 MB

Processed locally in your browser. No data uploaded to servers.

ZWO is Zwift's workout format that contains structured workout data with power targets relative to your FTP (Functional Threshold Power). It defines workout intervals, durations, and intensity levels for indoor training.

FIT (Flexible and Interoperable Data Transfer) is a file format used by Garmin and other fitness devices to store workout data including GPS, heart rate, and power metrics. It is a compact binary format optimized for embedded devices.

About Free ZWO Converter

Learn more about the converter and its creator

Jonas

Jonas

I'm a software developer and sports enthusiast. I created these converters to help athletes manage their workout data efficiently.

About ZWO File Converters

ZWO files are Zwift's workout format used for structured indoor training sessions. Our ZWO converter allows you to convert ZWO files to and from other formats, enabling you to use Zwift workouts on different platforms and create workouts from other file types.

What Makes ZWO Files Structured

ZWO files contain structured workout data with power targets relative to your FTP (Functional Threshold Power). They define intervals, durations, and intensity levels for indoor training sessions in Zwift and other compatible training applications.

Conversion Capabilities

Our ZWO converter supports multiple conversion directions, allowing you to:

  • Convert Zwift workouts to FIT format for use with Garmin devices
  • Transform power-based FIT files into Zwift workout format
  • Convert GPX routes into structured Zwift workouts

Data Integrity

All conversions preserve workout structure, power targets, intervals, and workout metadata. Your training sessions remain accurate and complete throughout the conversion process.

About ZWO File Converters

ZWO files are Zwift's workout format used for structured indoor training sessions. Our ZWO converter allows you to convert ZWO files to and from other formats, enabling you to use Zwift workouts on different platforms and create workouts from other file types.

What is a ZWO File?

ZWO files contain structured workout data with power targets relative to your FTP (Functional Threshold Power). They define intervals, durations, and intensity levels for indoor training sessions in Zwift and other compatible training applications.

Supported Conversions

Our ZWO converter supports conversion to and from multiple formats:

  • ZWO to FIT: Convert Zwift workouts to FIT format for use with Garmin devices
  • FIT to ZWO: Transform power-based FIT files into Zwift workout format
  • GPX to ZWO: Convert GPX routes into structured Zwift workouts

Key Features

ZWO converters support:

  • FTP-based power targeting (relative percentages)
  • Structured interval workouts
  • Power zone calculations
  • Workout metadata and descriptions
  • Compatibility with Zwift and other training apps

Common Use Cases

  • 1

    Workout Creation

    Create Zwift workouts from outdoor rides or other file formats

  • 2

    Workout Sharing

    Convert ZWO workouts to FIT format to use on other devices and platforms

  • 3

    Route to Workout

    Transform outdoor GPX routes into structured indoor Zwift workouts

How It Works

All conversions happen securely in your browser. Simply upload your ZWO file (or source file), enter your FTP if needed, and download the converted file. No data is uploaded to our servers—everything is processed locally for your privacy and security.