How to use this calculator
- Enter ad clicks, ad impressions.
- Choose a display currency, then select Calculate. Results also update after a brief pause while you edit.
- Read the result with the assumptions below. Export details or save a second scenario to compare your choices.
Formula and method
Assumptions and limitations
Use figures for the same entity, currency and reporting period. The denominator must be positive. This ratio is descriptive and has no universal pass/fail threshold.
Worked example
With ad clicks = 2000, ad impressions = 100000, ctr is approximately 2%.
What the result means
CTR measures clicks per impression; repeat exposure and measurement definitions affect comparisons.
Common questions
How should I interpret ctr?
CTR measures clicks per impression; repeat exposure and measurement definitions affect comparisons.
What should I check before using this result?
Use figures for the same entity, currency and reporting period. The denominator must be positive. This ratio is descriptive and has no universal pass/fail threshold.
Methodology and transparency
Calculation specification reviewed on 2026-10-14. Mathematical implementation is tested against independent reference fixtures. This does not imply review by a licensed financial professional. Read the testing and precision policy.