Free Google Ads cost calculator

There's no fixed price: you set a monthly budget and pay for each click. Across all industries, search ads averaged $5.42 a click in 2026 (LocaliQ 2026 Search Advertising Benchmarks), so a $3,000 budget buys roughly 550 clicks. What matters is how many of those clicks become sales, which is what this calculator works out.

Work back from the sales you want: budget = sales wanted × ad cost per sale. With $5 clicks, 8% of visitors becoming leads, half of those a good fit, half following through and 30% buying, a sale takes about $833 of ads, so 10 sales a month needs about $8,300. Spend only while each sale's profit after delivery covers that cost.

Net ROI = profit ÷ everything you spent × 100, where profit = revenue − cost to deliver − ad spend − fees. For example, $14,400 of revenue − $2,880 to deliver − $4,000 of ads − $500 of fees = $7,020 profit on $7,380 of costs: a 95% return.

Return on ad spend (ROAS) is revenue ÷ ad spend, so $14,400 from $4,000 of ads is $3.60 for every $1. ROI counts profit after every cost, including delivery and fees. A campaign can show a healthy ROAS and still lose money, so check both.

Across all industries in 2026: $5.42 per click, a 6.64% click-through rate, an 8.18% conversion rate and $66.69 per lead, according to the LocaliQ 2026 Search Advertising Benchmarks (Google and Microsoft search campaigns). Your industry can be far above or below these.

Your break-even cost per click: the share of clicks that end in a sale × the profit per sale before ads, adjusted for fees. With 0.6% of clicks buying and $2,400 profit per sale before ads, that's $14.40 a click, or $12.80 once $500 of monthly fees is counted. Above that, every click loses money.

Yes, completely free, with no sign-up and no email. It runs in your browser and nothing you enter is sent anywhere.