Website speed calculator
What does a slow website cost you? Enter today’s load time, a target and your traffic, and see what a faster site could be worth.
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Your numbers
Result
14.0%
Estimated lift in conversion rate
From 2.0% to 2.3%.
€ 4,200
Extra revenue per month
€ 50,400
Extra revenue per year
28
Extra conversions per month
Conversion rate, today and at the target
- Estimated drop in bounce rate
- 6.0%
How we calculate this
- We use a widely quoted rule of thumb: each second faster brings about 7% more conversions.
- The new conversion rate is today’s rate × (1 + 7% × seconds saved).
- The difference in conversions × order value gives the extra revenue per month, and × 12 per year.
- Bounce rate is estimated to fall by about 3% per second saved.
Rules of thumb are averages. How much speed matters for you depends on your industry, the device and how slow the site is today.
Want to know what slows your site down?
We measure Core Web Vitals and page speed and give you specific fixes in order of impact. Free, with an answer within 48 hours.