Privacy Policy

Treadmill Pace Calculator is built and run by Ian Welkins, an independent web developer based in Houston, Texas. He is the person responsible for this site and for any information it handles. Questions about privacy can be sent to ianwelkins@gmail.com, or through the contact page. There are no accounts, no sign-ups, no comments and no newsletter on this site.

All calculations on this site run in your browser. When you type a belt speed, a pace, a distance, an incline or an age into any calculator here, that information is processed on your own device by code already loaded in the page. Nothing you type is sent to a server, stored, or logged anywhere — there is no server-side record of your runs, paces or training details. Close the tab and the numbers are gone; the site never had them. The same applies to the contact and report-an-error links: they compose an email in your own mail app, and nothing is transmitted until you press send in that app.

The site itself sets no cookies today. There is no login to remember, no preferences to store, and no cookie banner, because there is nothing to consent to from the site's own code. Your browser may still hold cookies set by other websites, but none of them originate here. The one exception to be aware of is advertising, covered below: if advertising is enabled on this site in future, the advertising provider's cookies are described there, and this section will be updated the same day.

No analytics is installed on this site today. No analytics script is loaded, no visit-tracking service receives your IP address or browser details from these pages, and no visit statistics are collected by the site's operator. Like every web host, the hosting provider processes basic technical information — such as IP address, browser type and pages requested — in server logs to deliver the site and protect it from abuse; those logs are governed by the host's own practices, covered in the hosting section below. If analytics is added later, this page will be updated on the same day it goes live, and the update will name the provider and say what it collects — before or as it is enabled, never after the fact.

No advertising code is installed on this site today. So that this policy stays truthful when that changes, the position is stated in advance: when advertising is enabled on this site, Google may set ad cookies on your device. Ads would be served by Google AdSense, and Google and its partners may use cookies — including the DoubleClick cookie — to serve ads based on your visits to this and other websites, to personalise advertising, and to measure how ads perform. No information you type into a calculator is ever shared with advertisers, because, as explained above, the site never receives it in the first place. You can opt out of personalised advertising at any time through Google Ads Settings. How Google uses information from sites carrying its ads is described on Google's page on how it uses data from partner sites, and its wider approach is set out in Google's advertising policies.

This site is served by Cloudflare Pages. Like any hosting provider, Cloudflare may process standard request logs — such as IP addresses, browser details and the pages requested — in order to deliver the site, keep it secure and protect it from abuse. That processing is governed by Cloudflare's own privacy practices, not by this policy, and the site's operator does not receive or store your calculator inputs through it, because those inputs never leave your browser.

Some pages link to external websites — the published sources named on the Methodology page and the author's public profiles, among others. Those sites are run by others, under their own privacy policies, and this site has no control over what they collect. What happens there is governed by that site's policy, not this one.

This site is written for a general audience of adult runners, walkers and coaches. It is not directed at children under 13, it does not knowingly collect information from anyone — child or adult — and its calculators ask only for speeds, paces, distances, inclines and, for the zone tool, an age, all of which stay in the browser as described above.

If the way this site handles information changes — analytics added, advertising enabled, a new feature that touches data — this page changes on the same day, and the date at the top moves with it. The current version always describes the site as it actually operates, not as it once did or plans to.

Questions about this policy or about privacy on this site go to Ian Welkins at ianwelkins@gmail.com. If you email — directly or via a link that opens in your mail app — your email address and message are used to answer you and, for error reports, to check and correct the site. Correspondence is not sold, rented or added to any marketing list.