Real Trip Budget & Hidden-Costs Calculator

A Google Sheet, like the Hotel Location Decision System, that prices a whole trip rather than one booking. You enter the shape of the trip, then work through the six hidden-cost zones: getting there, getting around, staying there, doing things, daily life and a chaos buffer. Each zone has the usual suspects already listed, so nothing gets forgotten.

For every cheaper option you are weighing, it sets the upfront saving against the transport, time and daily costs it adds, and tells you whether the saving survives. The totals page shows the real trip cost, the cost per person per day, and a budget-confidence view that says how much of the total is fixed, estimated or guessed.