Conversion rate is the share of users who complete a defined action divided by the total who had the opportunity to. The 'opportunity' is usually a page visit, but it can also be ad clicks, email opens, or any well-defined funnel step.
Conversion Rate = (Conversions / Visitors) × 100
Why it matters
Conversion rate compounds with every upstream metric. Doubling it cuts your effective CAC in half and doubles your effective ROAS at the same ad cost. It's the cheapest growth lever most stores have because it operates on already-paid traffic.
Typical ranges
- DTC ecommerce: 1.5% – 3.5% is normal; 4%+ is great
- Lead-gen landing pages: 5% – 25% depending on offer + traffic source
- B2B SaaS trial signup: 2% – 5% is typical for cold ad traffic
- Branded search traffic converts 5–10× higher than cold prospecting
Levers
- Page speed — every 100ms of load time is a measurable conversion-rate hit
- Trust signals near the CTA: reviews, return policy, payment security
- Friction reduction: guest checkout, fewer form fields, persistent cart
- Match between ad message and landing-page hero — mismatched promise tanks conversion