How much revenue is your slow website costing you?
Every second of load time costs you visitors, orders and leads. Measure your site and see in euros what faster loading earns you.
1. Your load time
Measure your site on mobile, or enter a load time yourself.
Largest Contentful Paint on mobile
Google calls 2.5 s or faster “good”
2. Your numbers
Visitors who place an order
Including VAT
Adjust assumption
Default 10%: half of what Portent (2022) measured
Why speed is revenue
Portent measured about 20% less conversion per extra second. Our calculator deliberately uses half that: 10% per second, up to a maximum of 5 seconds. The real impact is often bigger.
higher conversion for a webshop that loads in 1 second instead of 5 seconds. Studied across 100 million page views. Portent, 2022
more leads for a B2B site that loads in 1 second instead of 5 seconds. Portent, 2022
more conversions for retail sites that made their mobile site just 0.1 seconds faster. Deloitte & Google, 2020