Online Navigation Calculators
compiled by Starpath
School of Navigation
Celestial Navigation
Altitude Correction
for Air Temperature
Compass Error
from Amplitudes Observed on the Celestial Horizon
Compass Error
from Amplitudes Observed on the Visible Horizon
Altitude Factors
and Change of Altitude in a Given Time from Meridian Transit
Latitude and
Longitude Factors
Meridian Angle and
Altitude of a Body on the Prime Vertical Circle
Table of Offsets
Altitude Correction
for Atmospheric Pressure
Sight Reduction and
Pre-computation
Dip of the Sea Short of the Horizon
Nautical Almanac data (from USNO, also this shortcut www.starpath.com/usno)
Starpath LOP Plot checker (in test phase...)
Cel nav tools from Henning Umland in Germany
Sight reduction sun, HU
https://www.celnav.de/sunsight.htm
Sight reduction moon, HU
https://www.celnav.de/moonsght.htm
Plot LOPs, HU
https://www.celnav.de/fixcalc.htm
Lunar distance, HU
https://www.celnav.de/staralm.htm
Conversions
Conversion for
Meters, Feet and Fathoms
Chart Scales and
Conversion for Nautical Miles, Statue Miles and Feet
Barometer
Units Conversions
Temperature Units Conversions
Mega converter from Digital Dutch
Another generic converter with even more units
Distance Calculators
Distance of an
Object by Two Bearings
Length of a Degree
of Latitude and Longitude
Distance of the
Horizon - Given the Height of Eye
Meridional Parts
Geographic Range
Speed for Measured
Mile and Speed, Time and Distance
Traverse Table
Distance by
Vertical Angle (1) Between Sea Horizon and Top of Object Beyond
Sea Horizon
Distance by Vertical Angle (2) Between Waterline at Object and
Top of Object
Distance by
Vertical Angle (3) Between Waterline at Object and Sea Horizon
Beyond Object
DR by ellipsoid (Ed Williams)
DR by Mercator vs great circle
Intersection of two great circle arcs
Log and Trig Calculators
Logarithmic
and Trigonometric Functions Calculator
Sailings
Great Circle Sailing
Ellisoidal Sailing (Ed Williams)
Mercator Sailing
Time Zones Calculators
Time Zones, Zone
Descriptions, and Suffixes
Weather Related Calculators
Correction of Mercury Barometer Reading for Gravity
Correction of Barometer for Height Above Sea Level
Correction of
Mercury Barometer Reading for Temperature
Relative Humidity and Dew Point
Vaisala Humidity Calculator
Barometer
Units Conversions
Temperature Units Conversions
Direction and
Speed of True Wind