Tour Guide Ratio Calculator

Total Groups/Day only divides Expected Daily Visitors by Max Group Size and rounds up -- it's purely a headcount split. Tour Duration, Operating Hours, and Target Tours per Guide never enter that formula, so none of them can move this figure at all, no matter how much you change them.

None of the five inputs consistently dominates. Guides Needed is built from three chained rounding-up steps -- grouping visitors, capping tours per guide, then rounding up the guide count -- so whichever step happens to be rounding up the most at your specific numbers ends up driving the total, rather than one input staying fixed as the biggest lever.

Target Tours per Guide is only a ceiling on how many tours you'd like each guide to run. The calculator also computes a hard capacity limit from Tour Duration and Operating Hours (tour length plus a half-hour buffer, fit into the day) and uses whichever number is lower, so a longer tour or a shorter operating day can quietly reduce the effective tours per guide even when your target hasn't changed.

Yes, indirectly -- Peak Hour Guides assumes 15% of Total Groups/Day cluster into the single busiest hour, and Total Groups/Day itself depends on Max Group Size, since a bigger cap means fewer, larger groups. Tour Duration, Operating Hours, and Target Tours per Guide have no effect on it at all.

The calculator adds a fixed 0.5-hour buffer to every Tour Duration before figuring out how many tour cycles fit inside Operating Hours. That buffer is baked into the Tours per Guide capacity limit and, through it, into Guides Needed and Max Concurrent Tours -- it is not a separate field you can adjust.