Simple Conversion Rate Calculator
Divides conversions by visitors and multiplies by 100, then grades it: under 1 percent is low, 1 to 3 average, 3 to 5 good, 5 or more excellent.
Conversão (%)
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Conversion rate
CR (Conversion Rate) = conversions / visitors × 100%. Say you got 45 sales out of 1,500 visitors: that's a 3% CR. For context, e-commerce averages 2-3% (mobile usually sits around 1.5%, desktop runs higher) and B2B SaaS lands in the 1-3% range. It helps to keep macro conversions (a purchase, a paid signup) separate from micro conversions (a newsletter sign-up, an add to cart), since both tell you something about the funnel. And when CR is low, fixing the page tends to do more than pouring in extra traffic.
Applications
Think e-commerce on Shopify/WooCommerce, SaaS sign-up flows, lead capture, and reading the marketing funnel end to end. It's the metric behind CRO (Conversion Rate Optimization) work, where you lean on heatmaps (Hotjar), A/B tests, a simpler checkout, faster pages and copy experiments. Most teams track it as events in Google Analytics 4.
FAQ
Should I scale traffic with low CR? Not yet. Fix the funnel first. Double your traffic on a 0.5% CR and you're still nowhere near benchmark.
Macro or micro conversion, which should I optimise? Macro is what brings in revenue, while micro tells you whether the funnel is healthy. Watch both, but hang your OKRs on the macro number.
How big a sample for A/B tests? That comes down to your baseline CR and the effect size you're chasing, but it's usually hundreds of conversions per variant. Run the numbers through a calculator before you call a winner.
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Calculate the average shear rate in an extrusion screw channel, γ̇ = (π·D·N) ÷ H, from the barrel diameter D (m), screw speed N (rev/s) and channel depth H (m). Shear rate is the velocity gradient the molten polymer experiences between the moving screw surface and the fixed barrel, and it is central to plastics processing for a key reason: molten polymers are NON-Newtonian pseudoplastic fluids whose viscosity DECREASES as shear rate rises (shear thinning). Knowing the shear rate lets you estimate the material's real viscosity in the machine (via the power law) and thus pressure, power and viscous heating. Very high shear can degrade the polymer (chain scission by shear and heat); too low leaves melting incomplete. Each polymer has a suitable range. This screw-channel shear rate differs from the (much higher) die shear rate at the exit restriction. It is a basic processing-rheology calculation. Enter the diameter, speed and channel depth.
The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.