Terms of Use

Treadmill Pace Calculator is a free informational website operated by Ian Welkins. It provides calculators, charts and explanations that turn belt speeds, paces, inclines, distances and times into training figures, using formulas and data from the published sources named on the Methodology page. By using this site you accept these terms. There are no accounts and nothing to buy: the tools are provided as-is, for general information and training planning for personal use, and using them costs nothing and creates no relationship — coaching, professional or otherwise — between you and the site. You may not use the site in a way that breaks the law, attempt to disrupt or overload the site or its hosting, misrepresent the site's estimates as official results, or present the site's content as your own work.

Every number this site produces is an estimate, and none of them is a guarantee. A treadmill displays the speed it believes the belt is moving at, but real belt speed varies with calibration, belt wear, motor load and your weight and stride — two machines set to 6.5 mph can be measurably different, and the same machine can drift as it warms up. Grade-adjusted pace rests on a published average energy-cost model, not on your personal efficiency. Heart-rate zones rest on an age-based estimate of a maximum nobody measured. The formulas, factors and values used here are taken from the published sources named on each page, worked examples are verified against the site's own code, and the checking process is described in the editorial policy — but even so, no warranty is given that any figure is accurate, complete or current. You are responsible for checking any figure you rely on for something that matters against the relevant source and your own equipment. If you find an error, please report it through the report-an-error page.

The text, tables, design and code of this site belong to its operator or are used under licence, except for the published source material credited to its owners. You may quote reasonable extracts of the site's content — a pace table, a formula, a passage — in your own articles, club materials and teaching, provided you credit Treadmill Pace Calculator and link back to the page you quoted. The treadmill pace chart may be printed and reproduced for personal and club use — on a gym wall, in a training handout, in a race pack — without asking, provided it is not sold and the site's name stays on it. Anything beyond this, including republishing whole pages or building a competing tool from the site's content wholesale, needs written permission first; ask by email.

To the extent permitted by law, the operator of this site is not liable for any loss or damage arising from your use of the site or your reliance on any figure it produces — including a race plan built on an estimate, a session run at a miscalibrated belt speed, or a training decision informed by a calculation. The tools are planning aids offered free of charge; the decision to act on them, and the consequences of that decision, remain yours. Nothing in these terms limits liability that cannot lawfully be limited.

These terms are governed by the laws of the United States. Any dispute arising from them or from use of this site is subject to the jurisdiction of the United States courts. If any part of these terms is found unenforceable, the remaining parts continue in full effect.

These terms may be updated as the site changes; the date at the top of this page moves when they do, and continued use of the site after an update means you accept the updated terms.

Questions about these terms go to Ian Welkins at ianwelkins@gmail.com, or through the contact page.