Informational estimates
Calculators are provided for general informational and training-planning purposes. Results are estimates based on the information entered and are not medical, nutrition, coaching, or professional advice. They should not be used as the sole basis for training decisions, health interventions, or performance expectations.
The calculators are not diagnostic tools. They do not assess health status, injury risk, or medical suitability for any activity. Anyone with health concerns should consult a qualified medical professional before beginning or modifying a training programme.
Your judgement
Use judgement when applying a result. Performance and health outcomes depend on many factors including training history, recovery, nutrition, sleep, stress, environment, and individual physiology. Performance Tools does not guarantee any particular result or outcome from using the calculators.
You are responsible for how you interpret and apply calculator results in your own training. Adjust based on your experience, how you feel, and feedback from qualified professionals where appropriate.
No guarantee of accuracy
While we select recognised formulas and methods, calculator results may contain errors due to rounding, input mistakes, or limitations in the underlying models. We do not guarantee that results are error-free, complete, or suitable for your specific circumstances. Always verify important calculations independently where safety or competition outcomes are at stake.
Acceptable use
Use the website lawfully and do not attempt to disrupt, misuse, reverse engineer, or interfere with its operation. Content and tools are provided as available and may change over time. We reserve the right to modify or discontinue any tool or feature without notice.
You may not reproduce, redistribute, or commercially exploit the calculators or their results without prior written permission, except for personal training and coaching use.
Limitation of liability
To the fullest extent permitted by applicable law, Performance Tools and its operators are not liable for any damages, losses, or injuries arising from the use or inability to use the calculators, including but not limited to training programme decisions, performance outcomes, or health issues.