Enter your puzzle answer and a coordinate formula. Letters are converted to numbers (a=1…z=26), digits are sorted, missing 0–9 are appended, and variables (a–z) are mapped to digits. The formula is then substituted while keeping N/E/S/W as coordinate prefixes and printed with uppercase N/E/S/W. Checksums (digital root modulo 9) are calculated for each part and the full coordinate.
Letters are case-insensitive and converted to their alphanumeric value (a=1…z=26). Other characters are ignored.
You can use any letters as variables. N/E/S/W must be present as direction prefixes (e.g. N 55, E 012). The formula is treated in lowercase internally, but N/E/S/W are printed uppercase in the final result.
If the substituted formula is a pure math expression, it will be evaluated. If it contains coordinates (N/E/S/W, degrees, etc.), it will not be evaluated, but you can still copy the substituted result.