GEOGRAPHY & CARTOGRAPHY CALCULATOR
Tis
A precise tool.
What is the Tis & How does it work?
Geographic coordinates are expressed as latitude and longitude, measured in decimal degrees. Latitude indicates northβsouth position relative to the equator, while longitude indicates eastβwest position relative to the Prime Meridian.
Cartographers choose a map projection to transform the curved surface of the Earth onto a flat sheet. Each projection, such as Mercator or Lambert Conformal Conic, preserves certain properties (shape, area, distance) while distorting others.
When calculating the greatβcircle distance between two points, the haversine formula provides an accurate result for spherical Earth models.
d = 2R\arcsin\left(\sqrt{\sin^{2}\left(\frac{\Delta\phi}{2}\right) + \cos\phi_{1}\cos\phi_{2}\sin^{2}\left(\frac{\Delta\lambda}{2}\right)}\right)
d = distance, R = Earth radius, ΞΟ = latitude difference, ΞΞ» = longitude difference, Οβ, Οβ = latitudes
Parameters
Result
β
Frequently Asked Questions
What are latitude and longitude?
Latitude measures north-south position relative to the equator, while longitude measures east-west position relative to the Prime Meridian.
Why do we use map projections?
Map projections transform the Earth’s curved surface onto a flat sheet, preserving certain properties like shape or area but distorting others.
What is the Mercator projection used for?
The Mercator projection preserves angles and shapes well, making it useful for navigation charts and web maps.
How does the Lambert Conformal Conic projection differ from the Mercator?
The Lambert Conformal Conic projection maintains true scale along specific lines of latitude, while the Mercator distorts scale as you move away from the equator.
What are some common distortions in map projections?
Common distortions include area distortion (e.g., Greenland appearing larger than Africa), distance distortion (e.g., distances between points being inaccurate), and shape distortion (e.g., landmasses becoming elongated).
Can I use this calculator for any location on Earth?
Yes, the calculator can be used for any geographic coordinates within the range of -90 to 90 degrees latitude and -180 to 180 degrees longitude.
What is the Prime Meridian?
The Prime Meridian is an imaginary line running from the North Pole to the South Pole, serving as the reference point for measuring longitude.
Results are for informational purposes only and do not constitute professional advice.