Coordinate Checksum
Add up the digits of a coordinate to get the checksum many multi-caches publish.
A coordinate checksum is the sum of every digit in a coordinate written as Degree Decimal Minutes. For example N51 37.491 W001 26.995 adds up to 30 + 32 = 62. Many multi-cache and mystery owners publish it so you can confirm the coordinates you calculated are right before you head out.
One coordinate per line, in any format. To verify against a published checksum, add = 62 to the end of a line.
Pick "As entered" to checksum a Reverse Wherigo, Plus Code, UTM, or any other format in its own digits.
About coordinate checksums
Total: the sum of all digits in the coordinate, written as Degree Decimal Minutes (degrees and minutes for both halves). This is the value owners usually mean by "checksum".
Lat and lon: the digit sums of the latitude half and the longitude half on their own. Some listings give the two halves separately instead of one combined total.
Digital root: the total reduced to a single digit by adding its digits over and over (62 becomes 6 + 2 = 8). A few puzzles use this single-digit form.
The coordinate is normalized to standard 3-decimal Degree Decimal Minutes before the digits are added, so any input format gives the same checksum a cache page would list. To convert between formats, use the Coordinate Converter. To solve a whole multi-cache step by step, try the Multi-Cache Worksheet.