Training Stress Score Calculator

Quickly calculate your training stress score with our free online tool, ideal for athletes and coaches to monitor workout intensity and training load.

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About This Tool

Our Training Stress Score (TSS) calculator helps athletes and coaches quantify training intensity and workload. By inputting workout duration, intensity factor, and personal thresholds, users receive an instant TSS score that reflects training stress.
This simple yet powerful tool is valuable for planning training sessions, avoiding overtraining, and tracking progress over time. Whether you're a competitive athlete or a fitness enthusiast, understanding TSS can optimize your training regimen.
The calculator features an easy-to-use interface, with support for multiple units and future enhancements like history tracking and data export. It’s designed to provide quick results for effective performance management and recovery planning.
Use this tool regularly to assess your training load, prevent burnout, and improve results with scientifically grounded insights.

Save your calculation history with a free account

How to Use

Enter your workout duration in hours.
Input your intensity factor (IF) between 0 and
Provide your functional threshold speed or power (FTS/FTP).
Click 'Calculate' to view your TSS score.

Frequently Asked Questions

Find Quick Answers

What is Training Stress Score (TSS)?

TSS quantifies training load and intensity, helping athletes balance training and recovery. It considers workout duration and intensity factors for accurate assessment.

How do I determine my intensity factor (IF)?

Intensity factor is a ratio of your workout intensity relative to your threshold speed or power. It can be calculated based on pace or wattage during training.

Can I use this calculator for different sports?

Yes, it is applicable across endurance sports like running, cycling, swimming, and more, adjusting inputs to fit each activity.

Does the calculator account for different workout types?

The current version provides a standard TSS calculation. Advanced features for specific training types are planned for future updates.

Is my data saved or stored?

The calculator does not store data unless you enable history tracking features or export results locally.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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