This is a free yarn calculator. I needed to know a ball park number for the amount of yards in my inherited 2 ounce skeins of wool. Turns out I have roughly 227 yards of yarn. Knowing this will help me decide what to make out of it.
Hope it helps someone else out there. 
I am so glad this was helpful to you as well.
My wool came in 4 hanks. Visually it seemed like a lot of yarn. Apparently I need more experience with yarn of this texture and fiber.
So having this tool will help me tremendously.
https://easycrochet.com/striped-pattern-generator/
Found this stripe pattern generator this morning.
Free and easy to play with.
After I selected my colors and how many rows of color I wanted I only had to hit the refresh button to get more choices.
Oh my gosh, I love this. As a beginner, I find patterns that are over my level but I always bookmark them <3
@hereami thank you for posting this yarn calculator - over the years I have had yarn without labels, and this will be very handy 