CRO ROI calculator: work out your conversion optimisation potential

Calculating CRO ROI: what does conversion optimisation actually deliver?

This calculator shows you the revenue potential of systematic conversion rate optimisation. Based on data from more than 200 CRO projects, we calculate your individual ROI, depending on traffic, conversion rate, average order value and your industry average.

How does the calculation work?

The calculator is based on real data from more than 200 CRO projects in the DACH region. The expected uplift is adjusted dynamically to your current conversion rate:

• Low conversion rate (0.1 to 1.0%): High potential of up to 25 percent uplift. Shops converting below 1 percent typically have fundamental UX problems that can be fixed quickly.
• Medium conversion rate (1.0 to 3.0%): Realistic potential of 15 to 20 percent uplift. Here the biggest levers are usually PDP clarity, mobile UX and CTA tests.
• High conversion rate (over 3.0%): Conservative potential of 10 to 15 percent uplift. The higher the starting point, the harder every further improvement becomes, but there is potential here too.

The calculation applies a 90 percent safety factor to set realistic expectations. We do not show you the theoretical maximum, but what we have actually achieved in comparable projects.

What influences CRO ROI?

Not every shop has the same potential. Factors that heavily influence ROI: traffic volume (more traffic means faster tests), seasonal swings (Christmas versus the summer lull), industry average (fashion converts differently from B2B), mobile share (often the biggest lever) and existing UX problems (obvious bugs versus subtle improvements).

The most common mistakes in ROI calculations

Many shop owners overestimate short-term ROI and underestimate the long-term effect. A test that produces 5 percent more revenue in 30 days sounds modest. But calculated across 12 months, with compounding from rolled-out winners and stacked improvements, 5 percent quickly becomes 30 to 50 percent more annual revenue. The calculator shows you both perspectives: the 30-day quick win and the 12-month total effect.

Last updated: August 2026