CPC Calculator

Written byOleh Soloninupdated 25 September 2026

Spend

Clicks

Impressions

Needed for CPM and CTR.

Result

CPC$66.67
CPM2,000
CTR, %3
Clicks450
Spend$30,000.00
Clicks for the budget450

Three metrics from three numbers

Cost per click from spend and clicks, plus CPM and CTR derived from the same three numbers.

Cost per click is the basic unit of buying traffic: spend divided by clicks. You need it to estimate how many visitors a budget buys and to compare one channel against another.

Spend, clicks and impressions are all connected, so with the three of them you get CPC, CPM and CTR at once. That is handy because platforms report differently — some in cost per click, some in cost per thousand impressions.

How to use

Take spend and clicks for one period from the platform's report.
Add impressions if you have them: the same three numbers also give you CPM and CTR.
Decide what spend covers — media only, or unrecoverable tax and agency fees too — and keep the same definition in every comparison.
Compare the figure against your cost per lead. A click is not a product; what matters is what a conversion costs.

One budget, different click counts

Each row is a run of this calculator at a spend of 30,000 and 15,000 impressions, with only the clicks changing. CPM stays put: a thousand impressions costs 2,000 whether anyone clicked or not.

That is the whole difference between the two buying models. Paying per impression, you pay for every thousand impressions and the cost of a click follows from how well the creative earns clicks; paying per click, you pay only for clicks, and the platform carries the risk of a weak click-through rate. The price of a click at auction is still not fixed.

Runs of this calculator at a spend of 30,000 and 15,000 impressions.
Clicks	CTR	CPC	CPM
150	1%	200	2,000
300	2%	100	2,000
450	3%	66.67	2,000
600	4%	50	2,000
900	6%	33.33	2,000

What this calculator shows

Cost per click and how many clicks the budget buys
CPM — what a thousand impressions cost at this spend
Campaign CTR when impressions are known

What to keep in mind

Spend is whatever you enter. To match the platform's report, use its definition; to judge your own costs, include tax you cannot reclaim. What matters is one method across every comparison.
CPC here is a campaign average; individual keywords can differ several times over.

FAQs

How do I bring the cost per click down?

Raise CTR and quality score, cut irrelevant queries with negatives, tighten geography and schedule. Lowering the bid drops the position and with it the CTR, so check its effect on the data.

How are CPC and CPM related?

CPC equals CPM divided by CTR and by ten. At a CPM of 2,000 and a CTR of three percent a click costs 66.67. On impression-priced inventory, CTR sets the price of traffic outright.

What is a normal CPC?

One at which a lead stays within the acquisition cost you can afford: CPC divided by the site's conversion rate gives the cost of a lead, and that is what you hold against margin. Industry figures shift by platform, region and month, so use current statistics from your own platform.

Should tax be included in spend?

Use whatever actually leaves your account. If you reclaim the tax, calculate net; if not, gross — otherwise the payback looks better than it is.

How are CPC, CPM and CTR tied together?

CPC equals CPM divided by a thousand and then by CTR as a fraction. At a CPM of 2,000 and a CTR of 3 percent that is 2,000 ÷ 1,000 ÷ 0.03 = 66.67. Which means doubling click-through at the same CPM halves the cost of a click.

Why does the calculator ask for impressions if CPC does not need them?

CPC itself does not — spend and clicks are enough. The impressions feed the other two lines of the answer: without them the calculator prints “no impressions” in place of CPM and CTR.

Worked example

One week of spend

Input: 30,000 spend, 450 clicks, 15,000 impressions

Output: CPC 66.67, CPM 2,000, CTR 3 percent

Note: Sixty-seven per click only means something next to conversion rate. At three percent conversion each lead costs 2,222 — and that is the figure you compare with margin.

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