Dan Comeau ran a very useful website featureing knife patterns, a knife bevel calculator and several posts covering knifemaking topics. Sadly, Dan passed away in 2022. His patterns were invaluable when I was learning how to make knives, and I still use them today. Being a jig user, his bevel calculator was invaluable when sitting my jig angle. His site now appears offline which is a loss for the community.
Respite Engineering is kindly hosting Dan’s patterns and even has a grind bevel calculator.
You’ll find several grind bevel calculators on this site which I’ll continually modify to ensure they’re as useful and efficient as possible. Check under Knifemaking in the page navigation, you can find the basic calculator here: https://nickmakesthings.com/knifemaking/basic-knife-bevel-calculator/