Creative and auction reviews need CTR from clicks and impressions.
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CTR Calculator
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CTR Calculator
Structured inputs and readable results — copy URLs, scan limits, and review findings without digging through JSON.
CTR = (clicks ÷ impressions) × 100.
Results
WaitingResults appear here
Fill the form and run the tool — outputs are structured cards, not a raw JSON dump.
Use CTR Calculator three ways
The free CTR Calculator on this page works in your browser. The same workflow is available via REST API for apps and via MCP for Cursor, Claude, and other agents — one API key, one plan, one quota. This tool is part of the marketing-apis module under Marketing Tools.
- Free in browserUse CTR Calculator here — no account required.
- REST APICall from your server with
X-Api-Key. - MCP for agentsConnect Cursor or Claude to ToolYour MCP with the same key.
- 1. Get an API keySign in and open Dashboard → API Keys (works for REST and MCP).
- 2. Call or connectUse the REST API from your server, or paste the MCP URL into your agent config.
- 3. Same qualityOutput matches the free web tool across all three surfaces.
What is CTR Calculator?
Creative and auction reviews need CTR from clicks and impressions. ToolYour CTR Calculator returns CTR = (clicks / impressions) × 100. It does not score creative quality. Same route via REST and MCP (POST /api/v1/marketing-apis/ctr-calculator).
What are common questions about CTR Calculator?
Required fields?
Clicks and impressions; impressions must be > 0.
Is this available via API and MCP?
Yes — same route via REST and MCP on one API key at 1 credit per call.
What counts as a good CTR benchmark?
Benchmarks vary widely by industry, placement, and format. This tool returns the calculated rate only — compare against your own historical baseline rather than a universal number.
What are the key features of CTR Calculator?
Percent output
How do you use CTR Calculator?
Enter clicks and impressions
Compare to benchmarks carefully
Why this tool exists
Click-through rate comparisons across creatives or placements need a consistent (clicks ÷ impressions) × 100 calculation, especially when reporting exports round differently. CTR Calculator exists to keep that one number honest and formula-visible across a team.
Problems it solves
Creative reviews often compare CTR across ad sets pulled at different times or from different dashboards, where small rounding differences compound into a misleading 'winner'. A shared calculator with the formula shown removes that source of confusion.
Common use cases
- Agency creative review: comparing CTR across two ad variants before deciding which to scale.
- In-house marketer: checking CTR on an email campaign's link clicks against impressions/opens.
- Agent/MCP: an agent computing CTR as one field in a weighted creative-performance report.
- QA before spend: validating a CTR assumption used in a media plan before it's approved.
Honest scope
This computes (clicks ÷ impressions) × 100 from numbers you provide — impressions must be greater than zero. It does not score creative quality, does not know what a 'good' CTR looks like for your industry or placement, and industry benchmarks vary too much to bake into a fixed threshold.
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