Google Ads Budget Calculator

Estimate clicks, leads, gross revenue, cost per lead, and Return on Ad Spend (ROAS) from your paid search advertising budgets.

Input Details

Monthly Ads Budget

Total amount you intend to pay Google each month

Average Cost Per Click (CPC)

The average cost charged when a user clicks your ad

Ad Conversion Rate

Percentage of ad clickers who buy or contact you

Average Customer Value

The revenue generated from a single converted customer

Results

Google Ads Performance

Estimated Monthly Net Return

$1,600

Your campaigns are projected to generate a positive return of $1,600 over your monthly ad spend.

Estimated Monthly Clicks800

Estimated Leads24

Estimated Gross Revenue$3,600

Cost Per Lead (CPL)$83.33

Return on Ad Spend (ROAS)1.80x ROAS

The Formula

Formula Overview:

1. Clicks = Monthly Budget ÷ Avg. Cost Per Click (CPC)
2. Leads = Clicks × (Conversion Rate / 100)
3. Revenue = Leads × Customer Value
4. Net Return = Revenue - Monthly Budget
5. ROAS = Revenue ÷ Monthly Budget

Example Calculation

If your monthly budget is $2,000, with an average CPC of $2.50, a 3% conversion rate, and an average customer value of $150:
Clicks: $2,000 / $2.50 = 800 clicks | Leads: 800 × 0.03 = 24 leads Revenue: 24 × $150 = $3,600 | Net Profit: $3,600 - $2,000 = $1,600 ROAS: $3,600 / $2,000 = 1.80x ROAS | CPL: $2,000 / 24 = $83.33/lead

How to Use This Calculator

Enter your planned **Monthly Budget** for Google Ads.
Enter your estimated **Average Cost per Click (CPC)**. You can get CPC ranges using Google Keyword Planner.
Enter your target website **Conversion Rate** (e.g. 2% to 5%).
Input the **Average Customer Value** (amount of immediate revenue one client generates).

When This Calculator is Useful

Use this calculator before **launching a Google Ads search campaign**, when determining how much to bid on key phrases, or when assessing client pitch parameters to check if PPC search campaigns are commercially viable.

Disclaimer Note

All results are estimates based on standard business formulas and rates. Actual project costs, ROI, and rates may vary based on market conditions, specific requirements, and contract agreements.

Frequently Asked Questions

There is no set minimum. Most small businesses start with a budget of $500 to $2,000 per month. This allows you to collect enough click and keyword data to optimize your campaigns. The key is to start small, verify that search clicks turn into profit, and then scale the budget.

CPC is the amount you pay Google every time a user clicks your advertisement. It is determined by an auction system where advertisers bid on keywords. Higher competition keywords (like "personal injury lawyer") have much higher CPCs compared to lower-intent keywords.

To improve conversion rates, ensure that your landing page matches the exact promise of your ad copy. Use clear Call-to-Actions (CTAs), keep landing pages fast, remove unnecessary form fields, display customer testimonials, and target long-tail keywords with buying intent.

Return on Ad Spend (ROAS) only measures the revenue generated relative to the direct cost of the ads. ROI (Return on Investment) is broader, taking into account other business costs such as product margins, transaction fees, and management agency hire fees.