FINBIZTOOLS
CTR Calculator
Calculate click-through rate (CTR) from the number of clicks and impressions an ad, email or listing received. Enter both figures for the same period to see the CTR percentage.
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Changes the currency symbol and number format only. Amounts are not converted.
How to use the CTR Calculator
- Enter the number of clicks.
- Enter the number of impressions for the same period and scope.
- Select Calculate to see the click-through rate.
Use the currency selector above the inputs to change the symbol. It changes the display only and does not convert amounts.
What is CTR?
Click-through rate (CTR) measures how often people who see an ad, email or search listing go on to click it, expressed as a percentage of impressions.
CTR is a common early signal of how relevant or compelling an ad or headline is, though it does not by itself measure whether those clicks led to a valuable outcome — see the Conversion Rate Calculator for that.
How the calculation works
CTR formula
CTR (%) = Clicks ÷ Impressions × 100
- Clicks is the number of clicks recorded for the period.
- Impressions is the number of times the ad, email or listing was shown in that same period.
Use the same date range and the same campaign, ad set or listing scope for both figures, or the resulting CTR will not be meaningful.
CTR calculation example
500 clicks from 50,000 impressions:
| Clicks | 500 |
|---|---|
| Impressions | 50000 |
| Clicks | 500 |
|---|---|
| Impressions | 50000 |
| Click-through rate (CTR) | 1% |
Amounts are shown without a currency symbol because the calculation involves no money; the figures apply the same way regardless of currency.
Assumptions and limitations
Assumptions
- Clicks and impressions are single totals for the same period and the same campaign, ad set or listing.
- Clicks are assumed not to exceed impressions, the normal case for click tracking; if your reporting shows otherwise, the chart breakdown is not shown, though the CTR is still calculated.
Limitations and why results can differ
- CTR alone does not indicate the quality of traffic after the click; a high CTR with a low conversion rate can mean the ad attracted clicks that were not genuinely interested.
- It does not account for how impressions are counted or de-duplicated, which can vary between ad platforms and affect comparability.
Frequently asked questions
What is considered a good CTR?
This varies widely by platform, ad format, industry and audience, so no single number applies everywhere. This calculator reports your entered figures without judging them.
Can CTR be used for emails or search listings, not just ads?
Yes. The same formula applies to any impressions-and-clicks scenario, including email links and organic or paid search listings.
Why would clicks exceed impressions?
This should not normally happen, but tracking discrepancies between platforms occasionally produce it. The calculator still computes CTR in that case, but does not show the clicks-versus-impressions chart, since the split would not be meaningful.
How is CTR different from conversion rate?
CTR measures clicks as a share of impressions. Conversion rate measures a further action (such as a purchase or signup) as a share of visitors or clicks. See the Conversion Rate Calculator.
Methodology
Clicks (0 to 1,000,000,000,000) and impressions (0.01 to 1,000,000,000,000, so a division by exactly zero is rejected) are validated directly. CTR = clicks ÷ impressions × 100, computed with no intermediate rounding before display rounding.
The calculation runs in your browser and inputs are not sent to a server.
Last reviewed:
Disclaimer
Results are calculated estimates based on the figures you enter. They are not accounting, pricing, tax or legal advice. Verify important business and pricing decisions with your own records and a qualified professional. Read the full Disclaimer.
Explore this topic
This tool is part of Digital Marketing Metrics.
A common order: check click-through and conversion rates, then measure return on ad spend.
- CTR Calculator (this page)
- Conversion Rate Calculator
- ROAS Calculator