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Google Ads Cost Calculator

Estimate monthly Google Ads budgets, expected clicks, impressions, and conversions based on industry average CPC, CTR, and target CPA.

Google Ads Campaign Parameters

Projected Clicks1,200$98.68 / day budget
Projected Conversions42$71.43 effective CPA
Search Impressions30,000Based on 4.0% CTR
Effective CPM$100.00Cost per 1k search impressions

Google Ads Budget & Traffic Formula

Clicks = Budget / CPC; Impressions = Clicks / CTR; Conversions = Clicks × Conversion Rate; CPA = Budget / Conversions
  • Estimated Clicks: Total user visits generated by dividing monthly media budget by average cost per click (CPC).
  • Search Impressions: Gross search appearances needed to generate clicks based on expected click-through rate (CTR).
  • Projected Conversions: Expected purchases, signups, or phone leads based on landing page conversion rate (CVR).
  • Effective CPA: True acquisition cost per converted customer from Google Ads.

Step-by-Step Worked Example

Scenario: Local service contractor running a $3,000/mo Google Search campaign

Calculation Steps:

  1. Calculate estimated clicks: $3,000 / $2.50 = 1,200 clicks
  2. Calculate impressions: 1,200 / 0.04 = 30,000 search impressions
  3. Calculate conversions: 1,200 × 0.035 = 42 booked customer leads
  4. Calculate effective CPA: $3,000 / 42 = $71.43 per lead
Result: The contractor generates 1,200 clicks, 30,000 search impressions, and 42 customer leads at $71.43 CPA with a $98.63 daily budget.

How to Use This Calculator

  1. 1Enter your monthly Google Ads advertising budget in USD.
  2. 2Input the target or benchmark Cost Per Click (CPC) for your business keywords.
  3. 3Adjust expected Click-Through Rate (CTR) and landing page Conversion Rate (CVR).
  4. 4Review daily spend pace, projected conversion volume, and effective CPA.

Assumptions & Limitations

  • Assumes consistent auction competition throughout the 30.4-day average monthly billing period.
  • Quality Score and ad rank factors directly influence actual CPC in real-time auctions.
  • Excludes third-party PPC management agency fees unless added to overall budget.

Frequently Asked Questions

What is the average CPC on Google Ads in the US?

Across all industries, the average Google Search CPC in the US is between $2.00 and $4.00. Competitive sectors like legal, insurance, and enterprise software can exceed $15 to $50+ per click.

How do I calculate my recommended daily Google Ads budget?

Divide your total monthly target budget by 30.4 (the average number of days in a month). Google may spend up to 2x your daily budget on high-traffic days, but will not exceed your monthly cap.

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