This problem is known to every geocacher, that one should convert a word or sentence into a number and perhaps even take the cross-sum of it. Since I had problems again and again the ÄÜÜß were not considered, I have now myself a small app for it written. Here you can: - Here you can count forward or backward. - Ignore letters or numbers. - Convert ÄÖÜß to "normal" letters. - Define the start value for A freely. Calculated: - Cross sum - Iterated cross sum - Words - Characters - Product Per