A tolerance calculator that I, an engineer of an automobile company, made for myself. For tolerance calculation, it is possible to calculate cumulative tolerance by specifying root sum square (R.S.S.) or linear sum (L.S.) for each tolerance. Under the designed size and tolerance, the probability of occurrence of a certain size can also be calculated. (If you like, please use a paid version, “ToleranceCalculator2”. You can calculate up to 10 numbers. It is easier to use and has been improved.)