We've just added the calculator parts of the existing training zones feature to the calculator pages in your members are but also on the public calculators page of your website.
Having these calculators is a good tool for your members/clients to play around with without actually modifying their training zones but also as a way to drive traffic to your website for a free non-members resource.
There is a new "Training Zones" tab in the calculators page and under that is the HR, Power and Pace tabs.
The user can then modify the values and use the calculators. Unlike on the actual Training Zones feature you can't then apply and save your zones as this is just the calculations version.
If you want to learn more about setting up the calculators on your public website checkout this article.