Wool conversion

My pattern is in worsted weight skeins. How many 100 gram balls do I need, please?

Welcome to KH!
What is the name of your pattern? If it comes in different sizes, which size are you making?

It’s a Mary Maxim. Worsted weight yarn. Needs 7 skeins. Thanks

There are several Mary Maxim worsted weight yarns.
https://www.marymaxim.com/yarn.html?brand=8&yarn_weight=1450
Do you know which yarn the pattern recommends? Is there a pattern name?

It’s an Aran hooded jacket. Pattern # 99399-400-1N

So maybe this pattern:
https://www.marymaxim.com/aran-hooded-jacket.html

It looks like it comes in either Aran Irish Twist or Aran Irish Tweed yarns. Both are 113gms and 205 yards/skein. If you need 7 skeins that’s 1435yds total.