Definition
Conversion rate is the percentage of visitors to a page, ad, or campaign who complete a defined goal — sign up, purchase, lead form, download — out of the total who arrived.
Conversion rate is the most important number on a landing page or campaign. Traffic gets you the chance; conversion rate decides what you do with it. Doubling conversion rate is functionally identical to doubling traffic, at zero additional cost.
The number is meaningful only against a defined goal. "Conversion" without a goal is meaningless — every page converts something. The goal must be specific (a paid signup, a purchase, a qualified lead form) and the rate computed against the right denominator (unique visitors, not sessions; the relevant traffic source, not all sources lumped together).
Origin
The metric formalised in direct-response advertising of the mid-20th century, where mail-order companies tracked sales-per-thousand-mailed. The web inherited the metric and made it instant.
How it works
- Define the conversion event precisely (e.g. "submitted lead form with valid email").
- Pick the denominator (unique visitors? sessions? a specific traffic source?).
- Instrument tracking — analytics, server-side events, or both.
- Establish a baseline — current rate over a representative period.
- Identify friction in the funnel; A/B test the highest-leverage steps.
- Iterate. Conversion rate is a long game, not a single test.
When to use it
Use when
- On every revenue-driving page — homepage, landing pages, signup, checkout.
- As the headline KPI for paid campaigns and email programs.
- After every major redesign or copy change.
Skip when
- Without a specific goal. Generic "conversion rate" across mixed traffic is noise.
- On vanity events (page views, impressions) — those are not conversions.
Key metrics
- The conversion rate itself, segmented by source, audience, and device.
- Cost per conversion (paid traffic).
- Drop-off rate at each funnel step (where conversion is leaking).
- A/B test win rate over time (signal of improvement velocity).
Examples
- Conversion rate doubled after we removed three optional form fields.
- A 1% improvement in conversion at scale beats a 50% lift in traffic.
- Mobile converts at 1.8%, desktop at 4.6% — the gap was the entire optimisation backlog.
In practice at Makreate
Every Makreate website, ad, and landing page is graded on conversion rate, not vanity metrics like sessions or impressions. A recent retail client had a 0.9% checkout completion rate. We segmented the funnel: 28% drop on first form step, 41% on payment, 15% on shipping selection. We fixed the worst step first (forced account creation), then payment friction, then shipping. Six weeks later: 2.4% completion. Same traffic, same products — engineered for the conversion.
Advertising →Common mistakes
- Optimising the headline before fixing form friction.
- Comparing rates across mixed traffic. Branded search converts 5–10× cold ads; aggregate is meaningless.
- Calling tests early. Statistical significance matters.
- Optimising for top-of-funnel conversion at the cost of downstream quality (more leads, fewer customers).
- Forgetting mobile. Mobile conversion lags desktop by 50–70% on most sites; that's where the leverage is.
Frequently asked
What's a good conversion rate?
It depends on the offer. SaaS free trial: 2–5%. E-commerce: 1–3%. B2B lead form: 5–15% on landing pages, 1–3% on broad pages. Compare to your own baseline, not to industry medians.
How do I improve conversion rate?
Find the biggest friction step in the funnel and fix it. Test the next biggest. Don't optimise headline-first if forms are leaking.
Conversion rate or absolute conversions?
Both. Rate tells you efficiency; absolute volume tells you impact. Optimising rate while traffic collapses is a hollow win.