Altitude Adjustment Calculator
Calculate how altitude affects physical performance, boiling point, and cooking times. Plan for high-altitude travel with pressure and oxygen estimates.
Free Navigation Calculators
9 toolsSpeed, fuel stops, elevation, and map scale tools. Browse our free navigation tools below — no sign-up required.
Ascent Rate Calculator
Calculate your climbing ascent rate in meters per hour. Monitor pace for safe acclimatization and compare against recommended daily altitude gain limits.
Average Speed Calculator
Calculate average speed from total distance and total time. Combine multiple segments with different speeds for weighted averages.
Elevation Gain Calculator
Calculate total elevation gain and loss for a hiking route from waypoint data. Enter segments to get cumulative ascent, descent, and net elevation change.
Fuel Stops on Route Calculator
Estimate how many fuel stops a route needs from trip distance, tank size, fuel economy, and the reserve you want to keep.
Map Scale Converter
Convert map measurements into real ground distance when you are working from a paper map, printed route sheet, or scale drawing.
Rest Stop Planner Calculator
Plan highway breaks based on your driving time, preferred stretch length, and stop duration so the route is paced before you leave.
River Current Speed Calculator
Estimate river current from a float test, then compare likely upstream and downstream paddling speeds for kayak, canoe, and raft trips.
Speed Distance Time Calculator
Solve for speed, distance, or time given the other two values. The fundamental physics triangle calculator for any mode of travel.