Google Ads planning workflow

Google Ads calculator for CPC, CPA, ROAS and ROI checks.

Use this guide to choose the right AdMetricFlow calculator for Google Ads planning, search campaign reporting and shopping campaign performance checks. It is independent from Google and built for quick budget sense-checks.

What to calculate before increasing Google Ads spend

Before pushing more budget into search or shopping campaigns, check whether clicks are affordable, conversions are happening at an acceptable cost, and revenue is high enough to justify the spend.

  • Use CPC to understand how much each paid visit costs.
  • Use CPA to judge whether leads, trials or orders are affordable.
  • Use ROAS to compare revenue with ad spend.
  • Use ROI when product margin, fulfilment costs or agency fees matter.

Example Google Ads check

If a campaign spends 1,200, generates 1,500 clicks, 60 conversions and 4,800 revenue, you can calculate CPC, CPA and ROAS in sequence. The raw campaign may look healthy, but ROI only becomes clear once margin and other costs are included.

This is why the Google Ads dashboard should be checked alongside analytics and finance numbers rather than used alone.

Search campaign questions

  • How much can I afford to pay for a click?
  • What conversion rate do I need to hit my CPA target?
  • Is a high CPC still acceptable because buyer intent is strong?
  • Does branded search perform differently from generic search?

Shopping and ecommerce questions

  • What ROAS do I need after product margin?
  • How much revenue is required to break even?
  • Are refunds or delivery costs changing the real ROI?
  • Should budget move from low-ROAS products to stronger campaigns?

Google Ads calculator FAQ

Is this an official Google Ads tool?

No. AdMetricFlow is an independent calculator site. Use it to sense-check campaign figures, then compare results with Google Ads and your analytics data.

Which metrics matter most for Google Ads?

Most Google Ads checks start with CPC, conversion rate, CPA, ROAS and ROI. CPM and CTR are still useful, but purchase intent and conversion value usually matter most.

Can I use this for search and shopping campaigns?

Yes. The formulas work for search, shopping, performance and lead-generation campaigns as long as you enter the correct spend, click, conversion and revenue numbers.