Fastpitch softball as a sport has not adopted a pitch limit, inning limit or any restrictions to preserve the arms of fastpitch softball pitchers. I have developed a weekly pitching limit for fastptich softball pitchers.
Allow me to define what I consider a "pitch." Any pitching motion delivered at max effort. Full pitching off a mound or speed drills are considered a pitch and counted in the pitching limit. Any drill not max effort like spins, windmills, long toss or full motion/half speed pitches are not counted. Feel free to do these type drills in warm ups, between game days, or as recovery when pitchers are sore.
The pitching limit I found to be lenient but very reasonable is around 400 pitches per week. This pitching limit can be reached by short practices, medium practice, long practice, single games of 5-7 innings or tournament games of 10-14 innings.
The first chart beaks down how many pitches per practice, game, or tournament. Find your perfect pitching practice schedule by first identifying game days. Second, select which days will be considered your off days where you will not pitch at all or just do drills that do not require maximum effort.
This second chart gives 8 examples of typical practice weeks with weekly totals calculated for you. If you are a faster pitcher, (58+ mph), may be wise to stay under 400 pitches. Faster pitching puts a much higher demand on the body. If you are a younger pitcher or under 58 mph, you should not have issues with going slightly over the 400 pitch limit per week.