Google Ads Budget Calculator

Work backwards from your lead or revenue targets to find the Google Ads budget you actually need. Three calculation modes to suit different planning approaches.

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Google Ads Budget Calculator | How Much Should I Spend on Google Ads? | Codesky

Google Ads Budget Calculator

Work backwards from your target — enter the number of leads or revenue you want, and find out the budget required to get there.

Your Lead Goals
Not sure? Use the benchmarks below or start with £2.50
£
0.5%3%20%
Budget Required
£2,500
estimated monthly ad spend
Clicks needed667
Cost per lead£125
Daily spend required£83
Your Revenue Goals
£
£
£
0.5%3%20%
1%25%100%
Budget Required
£3,333
estimated monthly ad spend
Customers needed20
Leads needed80
Clicks needed2,667
Cost per acquisition£167
Assess Your Current Budget
£
£
0.5%3%20%
1%25%100%
£
What Your Budget Is Delivering
Clicks per month400
Leads per month12
Customers per month3
Revenue generated£1,500
Revenue per £1 spent£1.50
Budget assessmentNeeds review
Typical UK Benchmarks by Sector
Local Services
£1.50–£4
CVR: 3–6%
Legal
£5–£20
CVR: 2–4%
Financial
£6–£25
CVR: 1–3%
Healthcare
£2–£8
CVR: 3–7%
E-commerce
£0.50–£3
CVR: 1–4%
B2B SaaS
£5–£30
CVR: 1–2%

Getting the most from your Google Ads budget takes more than the right numbers — it takes proper campaign structure, targeted keywords, and ongoing optimisation. That's what we do.

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Projections are estimates based on your inputs. Actual results vary based on campaign quality, competition, landing page performance, and other factors.

How the Budget Calculator Works

Most businesses approach Google Ads budgeting the wrong way round. They pick a number they are comfortable spending and hope it is enough. This calculator flips that approach by starting with what you actually want to achieve.

Choose from three modes: set a leads goal and the tool calculates the budget required to hit it, set a revenue goal and work backwards through your conversion funnel, or enter your current spend to see whether it is realistic given your targets and market costs.

The result is a budget grounded in your real numbers, not guesswork. If you want help turning that budget into a campaign that delivers, our PPC team can build it for you.

Need Help Setting Your Google Ads Budget?

No hard sell, no commitment required. Just a straightforward conversation about your business and how we can help.