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Google Ads Budget Calculator & Cost Estimator

Calculate the monthly and average daily Google Ads budget needed for a target conversion volume using expected average CPC and conversion rate assumptions.

Target Conversions, CPC and Conversion Rate

This is a planning model, not an auction forecast. Use CPC and conversion-rate assumptions from comparable traffic, then replace them with actual campaign data as it becomes available.

Required Clicks-
Estimated Monthly Ad Spend-
Average Daily Budget-
Typical Daily Spending Limit for Most Campaigns-
Implied CPA-
Estimated Impressions at Entered CTR-
Clicks per Conversion-
Planning Note-

Example: 100 Monthly Conversions

Target conversions: 100

Expected average CPC: $2.50

Expected conversion rate: 4.00%

Required clicks: 2,500

Estimated monthly spend: $6,250

Average daily budget: $205.59

Typical daily spending limit: $411.18

Implied CPA: $62.50

Expected CTR: 5.00%

Estimated impressions: 50,000

The sample inputs match the calculator defaults, so you can reproduce the example before replacing assumptions with your own campaign data.

Google Ads Budget Calculator Formulas

Required Clicks = Target Conversions / Conversion Rate as a DecimalEstimated Monthly Spend = Required Clicks x Expected Average CPCAverage Daily Budget = Estimated Monthly Spend / 30.4Implied CPA = Estimated Monthly Spend / Target ConversionsEstimated Impressions = Required Clicks / CTR as a Decimal

Input Checklist

One conversion action: Define the purchase, lead, booked call or other conversion before setting a monthly target.Comparable CPC: Use average CPC from similar keywords, campaign types, locations and devices when possible.Comparable conversion rate: Do not mix a high-intent branded conversion rate with a non-brand traffic plan.CTR is optional: It affects only the impression scenario, not the budget calculation when CPC is already known.

Add This Google Ads Budget Calculator to Your Website

Embed this free Google Ads cost and budget estimator on a PPC, agency or marketing resource page. The ?embed=1 view keeps the calculator focused and supports responsive iframe resizing.

Embedding requirement: Keep the SolveIndex attribution and source link visible and unchanged.
  
Marketing - Google Ads & PPC
Understand Google Ads budget rules before scaling spend
Read the detailed guide for average daily budgets, 30.4-day monthly planning, spending limits, Limited by budget status, Performance Planner and funnel-based budget scenarios.
Read the Google Ads Budget guideBrowse all guides
Google Ads Budget Calculator Frequently Asked Questions
It divides your target conversions by the expected conversion rate to estimate required clicks, then multiplies those clicks by expected average CPC. The result is a planning estimate, not an auction forecast.
Google Ads uses 30.4 as the average number of days in a month when relating average daily budgets to monthly spending limits. The calculator uses the same convention for the daily budget result.
Yes. For most campaigns, Google states daily spend can reach up to two times the average daily budget, while the monthly spending limit is generally 30.4 times the average daily budget.
Google Ads does not have one universal minimum spending commitment across the platform. Practical budget needs depend on campaign type, CPC, conversion economics, targeting and the amount of data required to reach your objective. Some campaign types can have specific budget guidance or floors.
Use it as a transparent starting scenario. Compare it with historical performance, budget simulations, account-specific Google Ads planning tools, conversion lag, cash constraints and real campaign results before making a material budget change.
Use the metric that matches the stage of the paid-search funnel you are planning.
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Google Ads Budget Calculator Disclaimer: Results are scenario estimates based on your target conversions, expected CPC, conversion rate and optional CTR. Google Ads auctions, bidding strategies, demand, eligibility, tracking, conversion lag and budget pacing can change actual spend and performance. Use account-specific data and professional judgment for material budget decisions.