Google Ads & Marketing Budget Calculator

Plan an ad budget from a sales goal (conversions ÷ conversion rate × cost per click), or set an overall marketing budget as a share of revenue.

How to use

1Choose goal-based (ads) or revenue-based (overall marketing).
2Enter your goal, conversion rate and CPC — or your revenue and the percentage to invest.

How it's calculated

Clicks needed = conversions ÷ conversion rate. Monthly budget = clicks × CPC; daily ≈ monthly ÷ 30.4. Revenue-based: budget = revenue × percentage (commonly 5–12% for established businesses, more for fast growth).

Frequently asked questions

What CPC should I plan with?

Use Google Keyword Planner's top-of-page bid estimates for your keywords. Average CPCs range from under $1 to over $50 depending on industry.

How much should a business spend on marketing?

Surveys of CMOs commonly report about 7–12% of revenue; startups chasing growth often spend more.

Why does Google spend more than my daily budget some days?

Google Ads can spend up to twice the daily budget on a given day, but won't exceed about 30.4× the daily budget in a month.