Time Zone Converter

Convert nautical, metric, and imperial route distances, then review chart-scale equivalents and transit-time planning for marine or aviation legs.

Convert altitude between flight levels, feet, metres, and kilometres with standard-pressure notes and a quick aviation reference sheet.

Calculate great-circle distance, initial bearing, and midpoint between two latitude/longitude coordinates in km, miles, and nautical miles.

Calculate elapsed time between any two dates in calendar years, months, days, and elapsed weeks, hours, minutes, and seconds.