Free tools and calculators

Free tools for marketers and analysts. Calculate what your campaigns are actually costing, validate your UTM setup before it corrupts your data, and see what you are trading away by using a heavier analytics tool.

No account required. Everything runs in your browser.

Calculators

Conversion rate calculator: Calculate your conversion rate, the traffic you need to hit a goal, and what a small improvement is actually worth in extra conversions per month.

Ad cost calculator: Enter your campaign numbers once and calculate your CPC, CPM and CPA alongside derived metrics like click-through rate and conversion rate.

Cookie banner traffic loss calculator: Estimate how many visitors are invisible to Google Analytics because of consent banner declines, and what that does to your reported numbers.

URL tools

UTM builder: Generate correctly formatted UTM-tagged URLs for your campaigns without doing it by hand.

UTM checker: Paste a tagged URL to validate it, spot naming inconsistencies and get a clean corrected version ready to copy.

Comparisons

Script size comparison: Google Analytics loads 135KB of JavaScript for every new visitor. Plausible loads 2.5KB and needs no cookie banner on top.