Feet (ft) to Kilometers (km) Converter

Aviation and maritime operations still rely heavily on the Imperial system for altitude and depth while the scientific community and most ground-based maps utilize the Metric system. This creates a disconnect when interpreting flight data or older topographical surveys. Interpreting a cruising altitude of 35,000 feet requires immediate translation into kilometers for atmospheric or fuel calculations. This tool handles the conversion with extreme precision. It supports scientific notation for astronomical distances or high-precision engineering data. The output adjusts decimal points based on user preference to handle both macro geography and micro engineering tolerances.

The foot is defined as exactly 0.3048 meters. Since there are 1,000 meters in a kilometer, the conversion factor is derived by dividing the meter definition by 1,000.

When dealing with extremely large values (such as orbital mechanics), the scientific notation form is often preferred.