Purchase Funnels

Metricuno
May 18, 2026
4 min read
Quick answer

The purchase funnel maps how visitors move from landing page to paid order. Here are the stages, the math, and the benchmarks that tell you where you're leaking revenue.

Definition
Funnel Analytics

Purchase Funnels

The sequence of stages an online shopper moves through from landing on your store to completing a paid order.

A purchase funnel is the canonical model for how visits become orders in online retail. The default shape has five or six stages — landing page, category or collection, product detail page (PDP), cart, checkout, and purchase — and each stage has a measurable pass-through rate.

The funnel is the operating frame for almost every conversion question your store will ask: where does traffic die, which step is bleeding revenue, and which experiments will move the most money. It sits inside the broader practice of funnel analytics, but the purchase funnel specifically is the retail-shaped version with well-documented benchmarks per step.

Also known as
e-commerce funnel
checkout funnel
shopping funnel

The stages aren't arbitrary — each one represents a different decision the shopper is making. Landing tests whether your offer matches the ad. Category tests merchandising. PDP tests product appeal and trust. Cart tests price and shipping clarity. Checkout tests friction and payment options.

That decision-by-decision structure is why purchase funnels are useful: a 2% site-wide conversion rate tells you nothing about what to fix. A 38% PDP-to-cart rate on a beauty SKU, paired with a 51% cart-to-checkout rate, points you straight at the product page.

Formula

Overall CVR = Landing→Category × Category→PDP × PDP→Cart × Cart→Checkout × Checkout→Purchase

Variables

Landing→Category

Landing-to-category rate

Share of landing-page sessions that view a category or collection page.

Category→PDP

Category-to-PDP rate

Share of category viewers who open at least one product detail page.

PDP→Cart

PDP-to-cart rate

Share of PDP viewers who add a product to cart.

Cart→Checkout

Cart-to-checkout rate

Share of cart viewers who begin the checkout flow.

Checkout→Purchase

Checkout-to-purchase rate

Share of checkout starts that complete payment.

Worked example

A Shopify apparel store with five funnel stages.

Landing→Category: 60%

Category→PDP: 45%

PDP→Cart: 12%

Cart→Checkout: 55%

Checkout→Purchase: 70%

Overall CVR ≈ 1.25%

Multiplying 0.60 × 0.45 × 0.12 × 0.55 × 0.70 gives roughly 1.25%. The PDP-to-cart step is the lowest absolute rate and the biggest lever — pushing it from 12% to 16% lifts the whole funnel to 1.66%, a 33% revenue uplift at constant traffic.

Benchmarks vary by vertical, traffic source, and average order value, but the shape is consistent. PDP-to-cart and checkout-to-purchase are the two stages where most stores leak the most revenue, and they're also the two where dev-light experiments (copy, badges, payment options) move the needle fastest.

Benchmark

Median stage conversion rates by vertical (Shopify-led online retail)

StageApparelBeauty & Personal CareElectronicsHome & Furniture
Landing → Category58%62%54%60%
Category → PDP44%48%40%42%
PDP → Cart11%14%7%6%
Cart → Checkout52%55%48%46%
Checkout → Purchase68%72%62%58%
Overall CVR1.0%1.6%0.4%0.4%

Read the table by column, not row. A 6% PDP-to-cart rate is a disaster in beauty but normal for furniture, where consideration cycles are longer and shoppers compare across sessions. The right benchmark is your vertical's median, segmented by device and traffic source — paid social rarely converts like organic search.

Frequently asked

Frequently asked questions

Five is the practical default for most online stores: landing, category, PDP, cart, checkout, then purchase as the terminal event. Single-product brands often collapse landing and PDP into one step, leaving four. More than six stages usually means you're tracking page views instead of decisions.

A marketing funnel covers awareness, consideration, and intent — usually pre-site. A purchase funnel starts the moment someone lands on your store and ends at the paid order. They connect, but the purchase funnel is where conversion-rate optimisation actually happens.

PDP-to-cart and checkout-to-purchase are the two biggest leak points on most stores. PDP-to-cart is usually a product-page issue — imagery, trust, price perception, stock anxiety. Checkout drop-off is usually friction — surprise shipping costs, missing payment methods, or a slow page.

Funnel analytics is the broader practice of measuring any sequential conversion path — onboarding, signup, lead gen, retention. A purchase funnel is the e-commerce-shaped instance of it, with the specific stages and benchmarks that apply to online retail.

Yes. Guest checkout typically completes at 8-12 percentage points higher than account-required checkout. If you force account creation, you'll see a checkout-to-purchase rate that lags every benchmark, and the fix is usually one toggle in Shopify settings.

Enough sessions to make the rate statistically stable — usually 1,000 sessions per stage as a rough floor. Below that, daily variance will swamp any real signal. For low-traffic stages like checkout, aggregate two to four weeks of data before drawing conclusions.

Always segment by device. Mobile typically converts 30-50% lower than desktop end-to-end, but the drop-off shape is different — mobile loses more at PDP-to-cart, desktop loses more at checkout-to-purchase. Treating them as one funnel hides both diagnoses.

Combine quantitative stage rates with session recordings and on-page events for the lowest-performing step. A 7% PDP-to-cart rate plus recordings showing repeated zoom-and-scroll on the size chart points at sizing anxiety; pair that with a hypothesis and an A/B test.

Median Shopify stores land between 1.0% and 2.0% overall. Beauty and personal care skew higher (1.5-2.5%), electronics and high-AOV furniture skew lower (0.4-0.8%). Compare against your vertical and your traffic mix, not a global average.

Yes — stage-level testing is more efficient than site-wide testing because you isolate the variable. A PDP test only affects PDP-to-cart and downstream rates, so you can measure impact on a smaller sample. Most stores run two to four concurrent tests, one per major leak point.

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