Lost somewhere in the wildness? Press F3 to get your ingame coordinates (you need X and Z, in this example: 1105 and -107)
Click here (external link) to find the longitude and latitude of the place where you want to go and copy these values into the form. Select your scale and you will get the ingame coords for Minecraft.
I have reworked the Coordinate Calculator: It now supports the coordinates in the format of DMS (degrees, minutes, seconds) and DD (decimal degrees). In Addition you can enter ingame coordinates and get the real life data.
You can also download the calculator to your local PC from Github (external link).