Travel & Geography

Calculate straight-line distance and bearing with the Haversine formula.

Estimate trip cost from distance, efficiency, price, and passengers.

Plan lodging, transport, food, activities, and buffer budget.

Generate a packing checklist from days, climate, and trip style.

Convert decimal degrees and degrees/minutes/seconds.

Convert map scale, map distance, and real distance.

Compare unit prices across package sizes.

Find overlapping work hours across time zones.