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Business & Accounting

Cost per Click (CPC) Calculator

Calculate cost per click (CPC), click-through rate (CTR) and effective CPM from ad spend, clicks and impressions.

Your inputs

Results

Cost per click

$1.50

Click-through rate
2%
Effective CPM
$30.00

✓Exact calculation — rounded only for display

What this calculator does

CPC is the average price paid for each ad click. CTR shows how often impressions turn into clicks.

Formula and method

CPC = spend ÷ clicks; CTR = clicks ÷ impressions; eCPM = spend ÷ impressions × 1000

Worked example

Calculated by this tool with its default inputs:

Inputs

  • Total spend: 1200 (any currency)
  • Clicks: 800
  • Impressions (optional): 40000

Results

  • Cost per click: 1.5
  • Click-through rate: 2%
  • Effective CPM: 30

How to read the results

High CTR with high CPC may still be efficient if those clicks convert well.

Assumptions and limitations

  • Platforms may count clicks differently (e.g. link clicks vs all clicks).

Financial results are estimates based on the inputs and assumptions shown. They are not financial advice; confirm figures with your lender, provider or a qualified adviser before making decisions.

Questions

Is lower CPC always better?

Only if the clicks are equally likely to convert.

Methodology and verification

Result type
Exact mathematical calculation (rounded only for display)
Formula version
1.0
Automated verification
2 reference and validation test cases, checked against independently computed values. The site cannot be built if any of them fail.
Editorial review
Awaiting human editorial review. The explanation was drafted with AI assistance; the formula and examples are verified by the automated tests above.

Privacy

Everything you enter is calculated in this browser and is not sent to Numerith or anyone else. Inputs are added to a share link only if you choose to include them. Privacy policy