Click-Through Rate Calculator (CTR)

Direct answer

Click-through rate is the share of impressions that produced a recorded click. Divide clicks by impressions and multiply by 100. Google Ads uses this same relationship in its CTR definition.

A result of 2% means the reporting system recorded two clicks for every 100 impressions. It does not mean that 2% of people clicked: one person may receive several impressions, and some systems may count more than one click.

Worked example

Suppose an ad received 25,000 impressions and 500 clicks:

500 ÷ 25,000 × 100 = 2% CTR

The secondary result expresses the same relationship as 20 clicks per 1,000 impressions. It is not an additional performance metric; it is another way to read the same numerator and denominator.

Match the reporting scope

Clicks and impressions must cover the same campaign, placement, date range and reporting source. Combining account-level clicks with campaign-level impressions produces a mathematically valid percentage that does not describe a real campaign.

Before comparing two CTR values, check:

• whether both are based on ads, organic listings, email or another surface;
• whether the impression definitions are compatible;
• whether the devices, countries and placements are similar;
• whether invalid clicks or delayed reporting have been handled consistently.

CTR does not describe the whole funnel

CTR measures movement from an impression to a click. It does not show whether the visitor reached the landing page, completed a purchase or generated profit. A campaign can have a higher CTR and still produce weaker economics if clicks are expensive or poorly matched to the offer.

Use the CPC Calculator to connect clicks with spend. Then use the Conversion Rate Calculator with a denominator that matches the decision being made.

Common mistakes

• Dividing impressions by clicks instead of clicks by impressions.
• Forgetting to multiply the decimal result by 100.
• Treating impressions as unique people reached.
• Comparing search, display and email CTR without acknowledging different behavior.
• Applying a universal benchmark without considering channel, placement and intent.

Limits of this calculator

This tool reports a descriptive ratio. It does not predict future clicks, adjust for viewability, measure incrementality or decide whether creative is effective. If entered clicks exceed impressions, the calculator still shows the arithmetic result but flags the scenario for a data-quality review.

Assumptions

• Clicks and impressions use the same date range, campaign scope and reporting system.
• The result describes observed interaction and does not establish a universal good or bad CTR.

Sources and methodology

CalcMotive publishes the formula and assumptions so you can decide whether the estimate fits your use case. See our methodology standards.

• Clickthrough rate (CTR): Definition; Google Ads Help; accessed Jul 13, 2026