Park planning tools
Calculators built on official National Park Service fees and visitor counts: whether a pass pays off, the quietest months at 24 parks, sunrise and sunset in park time, and when to turn around on a hike.
ToolHike turnaround calculatorWhen to turn around so you're back before dark.ToolPark crowd calendarMonthly visits at 24 parks from official NPS counts.ToolPark pass calculatorEntrance fees vs the $80 or $250 annual pass for your trip.ToolPark sunrise and sunsetSunrise, sunset and twilight in park time for any date.