How much revenue is your website leaving on the table?
Answer three quick questions. See what a better website could be worth to your business — then fine-tune the numbers yourself.
How many people visit your website each month?
A rough number is fine — check Google Analytics if you have it.
What’s your current conversion rate?
The share of visitors who buy or submit your contact form. Not sure? Around 1% is typical for a local service business.
What’s your average job or order value?
What a typical customer is worth to you, in pounds.
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Let’s talk through the numbers on a free 30-minute call — no obligation.
Book a Free Discovery Call →What this website ROI calculator measures
This calculator estimates the extra revenue a better-performing website could generate for your business over a year. It works from three numbers you already know — your monthly visitors, your conversion rate, and your average job or order value — and shows what happens when a redesigned site brings in modestly more traffic and converts modestly more of it.
It's a directional estimate, not a forecast. It doesn't know your seasonality, your capacity, or your market. What it does well is turn a vague feeling — "my website probably isn't pulling its weight" — into a concrete number you can weigh against the cost of fixing it.
How the calculation works
No black box here. Your current monthly website revenue is:
monthly visitors × conversion rate × average job value
The calculator then applies two uplifts and runs the same sum again. The traffic uplift (15% by default) reflects what better page speed, cleaner structure, and basic SEO typically do for a local business site's visibility on Google. The conversion uplift (5% by default) reflects clearer pages, faster load times, more visible trust signals, and a contact form people actually finish.
Both defaults are conservative on purpose. Plenty of industry studies show bigger swings — slow sites alone lose roughly half their mobile visitors before the page even loads — but I'd rather show you a number you can believe than one that impresses you. Once you've unlocked your results, both assumptions become sliders, so you can test optimistic and pessimistic scenarios yourself.
How to use it
Visitors: open Google Analytics and take your average monthly users over the last three months. No analytics? Pick the preset closest to your gut feel — 500 to 1,500 a month is typical for an established local service business.
Conversion rate: divide the enquiries your website generates each month by your visitor count. Twelve enquiries from 1,200 visitors is 1%. If you've never measured it, start at 1% — that's about average for a local service site.
Job value: your average invoice. If your jobs vary wildly, use the value of the work you most want more of.
Answer the three questions, unlock your breakdown, and then do the genuinely useful bit: drag the sliders and see which lever moves your number most. For most small businesses, that one insight — is my problem traffic or conversion? — is worth more than the headline figure.
What a good conversion rate looks like for a small business
For a local service business, around 1% is typical, 2–3% is good, and 5% or more is excellent. E-commerce runs lower per visitor; high-intent trades (emergency plumbers, locksmiths) can run much higher because people searching are ready to buy.
If you're below 1%, your website is almost certainly the bottleneck rather than your traffic. Common culprits: slow loading on mobile, no clear next step on the page, a phone number hidden in a footer, or a contact form that asks for too much. These are exactly the things a conversion-focused redesign fixes — and why the conversion uplift assumption in this calculator is rarely wrong in direction, only in size.
Frequently asked questions
Are these numbers realistic, or just marketing?
The default assumptions are deliberately conservative — a 15% traffic uplift and a 5% conversion uplift. If your current site is slow, hard to use on mobile, or invisible on Google, the real gains are often larger. If your site is already strong, they'll be smaller. That's exactly why the sliders are there: plug in your own assumptions and stress-test the figure.
What if my conversion rate is already good?
Then the calculator will show a smaller uplift — which is honest, and useful. A business converting at 5% has less to gain from design changes and more to gain from traffic. Set the conversion uplift slider low and the traffic uplift higher to model that scenario.
How quickly would I actually see these results?
Not in 30 days, and anyone who promises that is guessing. Conversion improvements can show within weeks of a relaunch because they affect every existing visitor. Traffic growth from SEO typically takes three to six months to compound. The figure here is an annual run-rate once the improvements have taken hold — the prize, not a first-month guarantee.
I don't know my visitor numbers. What should I do?
Use the presets as a starting point — 500 to 1,500 monthly visitors is typical for an established local service business. Then get Google Analytics set up; it's free and it's the foundation for every good website decision. If you book a discovery call, I'll happily help you set it up.
Can I change the assumptions behind the calculation?
Yes. Once you've unlocked your results, every input becomes a live slider — visitors, conversion rate, job value, and both uplift assumptions. Drag them and watch the projection update in real time.
Want the uplift without the guesswork?
I build websites for Buckinghamshire businesses that are designed to convert — live in 7 days, with pricing published upfront. Bring your calculator results to a free discovery call and we'll sense-check them together.
Book a Free Discovery CallOr email us directly: oliver@loxvik.co.uk