Weather and geography calculators
Calculate the volume of rainfall on any roof, yard or plot from the rain depth — or the catchment area needed to collect…
Convert rain to snow (or snow to rain) based on the outside temperature. Enter the precipitation amount and pick a temperature…
Calculate the azimuth (compass bearing) and great-circle distance between two points from their latitude and longitude. Get…
Estimate the energy released by an earthquake from its moment magnitude. Get TNT, kiloton, megaton and Hiroshima-bomb equivalents,…
Calculate the great-circle distance between two points on Earth using the haversine formula. Enter latitude and longitude…
Calculate how long you can safely stay in the sun based on UV Index, skin phototype, SPF, altitude, and surface reflectivity.…
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