Planning tool

Google Ads Cost and Profit Calculator

Estimate what Google Ads could cost and return using your own numbers: clicks, leads, new clients, and net profit. Then see whether moving budget between campaigns could bring in more clients without spending more.

Last updated

Enter your numbers

Step 1. Ad spend

Use your account data, or Keyword Planner if this is a new campaign.

Step 2. Search demand

Optional. Add this if you want to see when your budget is bigger than the search demand in your market.

Use Keyword Planner with your service area selected, and focus on commercial terms only. Leave it at 0 to skip.

A planning assumption, not a benchmark. Even strong campaigns rarely capture all the available clicks.

Step 3. Lead conversion

The percent of clicks that turn into leads.

The percent of leads that become paying clients. Phone leads and form leads often close at different rates.

Step 4. What a new client is worth

Use collected revenue, not booked revenue. Use the first engagement, not lifetime value.

Leave this at 100% if you only want to model revenue. If you skip margin, profit will look better than it really is.

When This Tool Is Useful

These are a few good times to use it. Paid-search questions are easier to answer with your own numbers than with a benchmark.

  • Before you start running ads. Check whether the math works with your average sale and close rate, before you spend a month finding out.
  • An agency or freelancer wants a bigger budget. Check whether budget is the limit, or whether local search volume runs out first.
  • Leads are cheap but the account still loses money. The break-even numbers help you see whether the problem is cost per click, the landing page, or the sales process.
  • Deciding what to turn off. The allocation view shows which campaigns earn more profit per dollar, and what shifting budget could do without raising spend.
  • A campaign looks good but is not scaling. Impression share helps show whether more budget can buy more, or whether ad rank is the limit.
  • Setting a target cost per lead. Work backward from what a new client is worth, instead of copying an industry average.

How This Calculator Works

From Budget to Clients

Clicks and leads do not matter on their own. The math only works if they turn into paying clients, and every step narrows the pool.

Clicks = budget ÷ average CPC, capped by the searches that exist
Leads = clicks × landing page conversion rate
New clients = leads × close rate

This is the part most calculators skip. If your budget is bigger than the local search demand, extra spend has nothing left to buy, and this tool shows that instead of making up more clicks.

How the Break-Even Numbers Help

Each number helps you see where the problem is when the math does not work.

Max profitable cost per client = client value × gross margin
Max profitable CPC = client value × gross margin × close rate × conversion rate

If your cost per click is above the max, the traffic costs too much. If conversion rate is below break-even, the problem is usually the landing page or the keyword intent. If close rate is below break-even, the issue is usually sales, follow-up, or lead quality.

Why a Converting Campaign Can Still Lose Budget

With a fixed budget, the question is not just whether a campaign converts. It is whether the next dollar would earn more here or in another campaign. A campaign can look successful and still deserve less budget: if another one earns more profit per dollar and still has room to spend, the next dollar belongs there. The main exception is a campaign that has already used up the available search volume, and that is what impression share measures.

Spend ceiling = current spend × (impr. share + lost to budget) ÷ impr. share

Only impression share lost to budget counts as real headroom. Those are auctions you can already compete in when the budget holds out. If you are losing auctions to rank, more budget alone will not fix it.

The sample campaigns above are examples, but the logic is the same. If one campaign earns $7.40 per dollar and still has room to spend, while another earns $1.10, the next dollar usually belongs in the stronger one. Same $1,000 budget, about $612 more profit a month.

What This Tool Assumes

  • The default values are placeholders for modeling. They are not industry averages or recommended targets.
  • The model assumes added spend performs close to your recent efficiency, adjusted by the rising-cost factor you set. In real accounts, extra clicks often cost more than average ones.
  • Impression share numbers come from your Google Ads account. Lost impression share from budget is only available at the campaign level, and the three share values should add up to 100% there. The tool warns you if they do not.
  • Brand campaigns are excluded from scale recommendations by default, because many of those searchers were already looking for you.
  • Close rates vary by lead type. Phone leads and form leads often behave differently, so use your own numbers.
  • Nothing you enter is saved or sent.

If the Numbers Work, the Setup Matters

This tool shows whether the math can work. Making it work is the hard part: keyword pruning, landing pages, bid strategy, and the tracking that keeps the numbers honest. We run Google Ads for businesses from service practices to e-commerce.

Review my account How we manage Google Ads