Google Ads ROI Calculator
Enter your budget, cost per lead and conversion rates to see customers, CAC, LTV:CAC, payback and why closed revenue lags spend.
Inputs
Results
First 90 days
Each customer returns about 6.4x what it costs to win and pays back in 7.5 months, which is in the range many SaaS teams treat as healthy.
Why use this calculator
See CAC before you scale
Know the real acquisition cost, including non-ad costs, before raising the budget.
Understand the lag
Sales cycles delay closed revenue. The first 90 days view shows how much you spend before the first deal.
Test the economics
LTV:CAC and payback show whether paid search can fund its own growth.
How to use this tool
- 1
Enter monthly ad budget, other acquisition costs and cost per lead.
- 2
Enter lead to opportunity and opportunity to closed-won rates.
- 3
Enter contract value, gross margin, customer lifetime and sales cycle.
- 4
Read CAC, LTV:CAC, payback and the first 90 days, then email the results to yourself.
Use cases
Launching paid search
Estimate whether a first budget can reach healthy unit economics.
Budget reviews
Check if raising spend is justified by LTV:CAC and payback.
Agency conversations
Hold an agency to numbers you calculated yourself.
Cash planning
See how much you spend before the first closed deal lands.
Frequently asked questions
What is a good LTV:CAC ratio?+
Many SaaS teams treat 3x or higher as healthy, with payback inside 12 months. Your own targets may differ.
Why is closed revenue delayed?+
Leads take time to become customers. The sales cycle input shows how long revenue lags spend.
What counts as other acquisition costs?+
Agency fees, landing page tools, sales time and anything else needed to win customers from this channel.
Is the output a forecast?+
No. It is a projection from your own assumptions, so replace defaults with your real numbers.
Want these numbers turned into pipeline?
Book a free 30 minute call and we will map your quickest wins across cold outbound, Google Ads and LinkedIn Ads.