Circle Radius Calculator: How to Find the Radius of a Circle
Learn how to find the radius of a circle from its diameter, circumference, or area with formulas, worked examples, and calculator guidance.
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Air Miles Between Airports: How Flight Distance Is Calculated
An air miles calculator finds the geographic flight distance between two airports , usually by calculating the shortest path across Earth's surface from the coordinates of the departure airport to the coordinates of the arrival airport.
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How to Calculate Average Speed Correctly
To calculate average speed , divide the total distance traveled by the total elapsed time:
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Distance, Speed, and Time Formula
Distance, speed, and time are related by three simple formulas:
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How to Find the Halfway Point Between Two Cities
To find the halfway point between two cities , first decide what “halfway” means for your trip.
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Radius Map: How to Draw a Radius Circle on a Map
To draw a radius on a map , choose the center point, enter the radius distance, select miles or kilometers, and create the circle. The resulting boundary shows locations approximately within that fixed straight-line distance from the center.
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How to Measure Distance on Google Maps
Google Maps lets you measure straight-line distance between two or more points on a map. You can use the feature on a computer, Android phone or tablet, and iPhone or iPad.
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How to Find Latitude and Longitude From an Address
You can find the latitude and longitude of an address by geocoding it . Geocoding converts a human-readable street address, place name, or other location description into geographic coordinates.
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How Driving Distance Is Calculated
Driving distance is calculated by finding a route through a road network between a starting point and destination, then measuring the length of the road segments that make up that route.
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Driving Distance vs Straight-Line Distance
Use the Driving Distance Calculator when you want road mileage and estimated drive time. Use the Distance Calculator when you want direct great-circle distance between two geographic coordinates.
