Free Ad Spend Calculator
This ad spend calculator works backwards from the result you want, such as leads or sales a month, to the budget it would take at your cost per click and conversion rate. It turns a guess into a figure you can question.
Your numbers
Ad spend needed
How this is calculated
Orders = target ÷ AOV; clicks = orders ÷ conversion rate; spend = clicks × CPC.
Estimates only. Your numbers stay in your browser.
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Using the ad spend calculator
Enter your target number of sales or leads, your expected cost per click, your landing page conversion rate and, for sales, your lead-to-customer rate. The calculator shows the clicks needed, the monthly spend and the implied cost per acquisition. You can compare that cost with your margin or customer value to see whether the plan makes commercial sense before any money is spent.
The output is only as good as the inputs, so use your own historical data where you have it. If you are new to a channel, run conservative and optimistic versions. Small changes in conversion rate move the budget a lot, which is often the clearest argument for improving landing pages before raising spend.
Pair it with the marketing ROI calculator to check returns.
Questions we often hear
Straight answers to the things clients ask us most. If yours isn’t here, just ask.
How do I estimate cost per click for a new campaign?
Why is my calculated ad budget so high?
Case studies & resources
Real-world results and practical reading to help you plan your next step.
Client stories
How similar work has played out for other businesses.
Helpful resources
Guides, tools and articles our team recommends on this topic.
Want a team to run this for you?
A free 30-minute session with a senior Nians strategist. You leave with a prioritised plan, whether or not you work with us.