The terms that apply to using our free cycling calculators.
By using Cycling Watts Calculator, you agree to these terms. If you don't agree with them, please don't use the site.
Last updated: September 15, 2026.
Cycling Watts Calculator provides free, publicly accessible calculators for cycling watts, power, FTP, W/kg, speed, climbing and aerodynamics. You're welcome to use them for personal training, planning, and educational purposes, free of charge and without creating an account.
Every result on this site is a mathematical estimate for training and planning purposes, not a laboratory measurement, medical judgment, or professional coaching advice. Real-world performance depends on factors (equipment, conditions, individual physiology) that a formula can't fully capture. Use these tools to inform your own decisions, not as a substitute for a calibrated power meter, a qualified coach, or medical guidance where relevant.
The site's design, text, and the specific implementation of its calculators belong to Cycling Watts Calculator. The underlying formulas themselves are drawn from publicly documented, widely-used methods in cycling physics and training science (sourced and cited on each calculator's page) — we don't claim ownership over the science itself, only over this particular site and how it presents it.
Please don't attempt to disrupt the site, scrape it excessively, or use it in any way that could damage, disable, or impair it for other visitors.
The site is provided "as is" without warranties of any kind, express or implied, including that results will be accurate, uninterrupted, or error-free. We work to keep the formulas and their documentation correct and up to date, but we can't guarantee a specific result is free of error.
To the fullest extent permitted by applicable law, Cycling Watts Calculator is not liable for any loss or damage arising from your use of, or inability to use, this site or its calculators — including decisions made based on an estimate it produces.
Some pages link to third-party resources (for example, a tire rolling-resistance database) for reference. We don't control those sites and aren't responsible for their content or availability.
We may update these terms as the site changes. The "Last updated" date above reflects the most recent revision; continuing to use the site after a change means you accept the updated terms.
Questions about these terms? Email procalculators@outlook.com.
