Website & SEO Calculators
Six calculators to pressure-test your website and marketing maths. Use them to decide whether you need to invest, where, and how much.
How to use the calculator results
These are planning models, not forecasts or supplier quotes. Use your own average order value, close rate, margin and measured conversion data wherever possible. Change one assumption at a time and save the low, expected and high cases so the sensitivity is visible.
Start with the decision you need to make. Website-cost tools help define scope; lead-cost and advertising tools compare acquisition assumptions; the SEO ROI calculator works backwards from demand and conversion; the speed-loss and local checks identify evidence worth investigating. No calculator can guarantee traffic, rankings, advertising costs or revenue.
After acting, replace assumptions with real data from analytics, call records, form delivery and booked work. If a result looks surprisingly strong, check units, time period and whether revenue has been confused with gross profit. The website checker answers explain how to validate the technical inputs.
SEO ROI Calculator
See the monthly revenue you're leaving on the table by ranking lower than your competitors.
Calculate ROI →Website Cost Calculator
Realistic UK ballpark, not the cheapest brochure site and not London-agency overhead.
Calculate cost →Local SEO Self-Audit
15-point check on the local-SEO basics. Score yourself in 60 seconds.
Score my site →Page Speed Revenue Loss
See how much revenue your slow site is costing you per month.
Calculate loss →Lead Cost Calculator
Your true cost per lead and per customer across paid + organic.
Work it out →Google Ads Budget Calculator
Work backwards from the customers you need to the realistic ad budget.
Plan a budget →Want a personalised version?
A free growth audit gives you all of these numbers worked out against your actual site, traffic and competitors.
Get a free audit