Gear ratios

[Crazycrafter]

I'm a bike builder, I would like to chat with someone that is familiar with gear ratios and tire sizes and how they inner relate with one another.

 

[Sharky]

There are several online apps that calculate inches, taking into consideration wheel sizes.
Bike calc is the one I use

 

[Teamfixed]

Or Sheldon Brown has every known gear chart known plus a few more probably.
https://www.sheldonbrown.com/gear-calc.html

 

[Teamfixed]

Bike calc looks interesting though... with cadence/speed/ratio/tyre size calculations.