# Slow Website Cost Calculator

Source: https://www.lucidmedia.co.nz/tools/website-speed-impact-calculator/

Free Tool

Find out how much a slow website is costing your business.

Quick start: Every second your site takes to load, you lose customers. Find out how much a slow website is costing you.

How many visitors does your website get per month?

Check Google Analytics for your total monthly sessions

How long does your site take to load right now?

Test at [PageSpeed Insights](https://pagespeed.web.dev/) and enter the seconds shown

What's your target load time?

Google recommends under 2.5 seconds. Most fast sites load in 1-2 seconds.

What % of visitors buy or become leads?

Your current conversion rate. If unsure, use 2%.

What's each sale or lead worth?

Example: If your average order is $180, enter 180

## How Page Speed Affects Revenue

Page speed directly impacts your bottom line. **Slower sites lose visitors, reduce conversions, and hurt search rankings**. The relationship between speed and revenue is well-documented.

This calculator uses the following research-backed estimate:

Conversion Increase = Seconds Improved x ~7% per second

### The research behind it

Multiple studies support the impact of page speed on conversions:

- **Portent (2022):** The highest ecommerce conversion rates occur on pages that load in 0-2 seconds. Each additional second reduces conversions by approximately 7%.
- **Google:** As page load time goes from 1 to 3 seconds, the probability of bounce increases by 32%. From 1 to 5 seconds, it increases by 90%.
- **Deloitte:** A 0.1-second improvement in site speed resulted in retail consumers spending almost 10% more.

### Core Web Vitals

Google uses Core Web Vitals as a ranking factor. The three key metrics are **Largest Contentful Paint (LCP)** for loading speed, **Interaction to Next Paint (INP)** for responsiveness, and **Cumulative Layout Shift (CLS)** for visual stability. Improving these metrics helps both your search rankings and user experience.

### Quick wins for speed improvement

- **Compress images:** Use WebP format and proper sizing - often the single biggest improvement
- **Enable caching:** Browser caching reduces load times for returning visitors
- **Minimise JavaScript:** Remove unused scripts and defer non-critical code
- **Use a CDN:** Serve content from servers closer to your visitors

Need help improving your site speed? Our [web development team](https://www.lucidmedia.co.nz/services/web-development/) specialises in performance optimisation that delivers measurable results.

## Related Tools

[CRO Revenue Calculator](https://www.lucidmedia.co.nz/tools/conversion-rate-optimisation-impact-calculator/)

See how conversion improvements boost revenue

[Website ROI Calculator](https://www.lucidmedia.co.nz/tools/website-roi-calculator/)

Calculate the return on a new website

[SEO Profit Calculator](https://www.lucidmedia.co.nz/tools/seo-roi-calculator/)

Calculate how much SEO could earn you

## Want a Faster Website That Converts Better?

Get a free speed audit and we will identify exactly what is slowing your site down and how to fix it.

Free consultation & quote

Response within 24 hours

No obligation to proceed

[info@lucidmedia.co.nz](mailto:info@lucidmedia.co.nz) [+64 27 582 4369](tel:+64275824369)