Why conversion rate matters
Every visitor costs something to get, whether you pay for ads or invest in content and search. Conversion rate decides how much of that effort turns into orders. A small improvement multiplies across all your traffic, which is why it often pays back faster than adding more visitors.
How the two tools fit together
The conversion rate calculator gives you the baseline: rate, order value and revenue per visitor. Take those numbers to the CRO uplift calculator, pick a realistic lift, and see the monthly and yearly value along with your payback time. If you also want the profit after fees, shipping and ad spend for each order, use the net profit calculator.