CTR Calculator: Calculate Click-Through Rate
Calculate CTR, compare engagement on a consistent basis, and explain what the percentage does and does not prove.
Works across your stack
Supported AI platforms
7 supported clients. Connector requirements are shown separately below.
+2 Your result
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Enter your numbers to calculate a comparable efficiency metric.
Add the CTR calculator skill to your AI client
Set up the Adspirer "CTR Calculator" skill for me. If you can run commands: npx adspirer-skills add ctr-calculator If not: fetch https://www.adspirer.com/skills/ctr-calculator.md and follow it. Then read the skill and ask me what you need to get started.
Paste it into Claude, ChatGPT, Cursor, Codex, Gemini, or any agent — it works out how to install itself.
Or install it yourself
npx adspirer-skills add ctr-calculator Writes SKILL.md to .claude/skills/ in the current project. The bundled references, scripts, and assets ship with the ZIP. Download ZIP →
Upload the ZIP in Claude → Settings → Skills. The bundle preserves every reference, script, and asset.
In ChatGPT, open Plugins → Skills → Create → Upload from your computer. ChatGPT scans the skill before making it available. Availability and upload permissions depend on your workspace plan and admin settings.
npx adspirer-skills add ctr-calculator --agent cursor Writes the skill to .cursor/rules/ in the current workspace, so Cursor loads it on every session.
npx adspirer-skills add ctr-calculator --agent codex Appends the skill to AGENTS.md, which Codex reads on every session — so it persists instead of living in one conversation. The append is idempotent; re-running it will not duplicate the block.
npx adspirer-skills add ctr-calculator --agent gemini Appends the skill to .gemini/GEMINI.md, which the Gemini CLI reads on every session. Connect Adspirer as an MCP server first so the live ad-account steps can run.
npx adspirer-skills add ctr-calculator --agent windsurf Writes the skill to .windsurf/rules/ in the current workspace, so Windsurf loads it on every session.
npx adspirer-skills add ctr-calculator --agent other Writes SKILL.md to adspirer-skills/ in the current folder — point any agent at that file. No shell? Fetch the raw file with curl -fsSL https://www.adspirer.com/skills/ctr-calculator.md, which prints the skill instead of installing it.
Starter prompt
Client setup guide →Use the CTR Calculator skill. I’m working on [campaign or account] and want to understand [goal or problem] for [date range]. Check that Adspirer is connected, start by looking without changing anything, and explain the story in plain language. Show me the evidence and ask before making any live change.Where it helps
When to use the CTR calculator skill
A checked click-through rate with consistent click definitions and a fair explanation of engagement without pretending CTR proves business value.
Use case 1
A report is missing CTR
Clicks and impressions are present and need to become one clearly documented percentage.
Use case 2
Creative variants need comparison
The team wants to compare engagement while controlling for placement, audience, format, and objective.
Use case 3
An aggregate rate looks suspicious
Displayed row percentages were averaged and need to be rebuilt from total clicks and impressions.
See it in a campaign
CTR calculator examples
The numbers, account, and recommendation will be yours. These show the kind of story the skill helps you work through.
Simple campaign calculation
A campaign records 2,400 clicks from 120,000 impressions.
The skill calculates 2.00% and explains the rate without reaching for an unsupported universal benchmark.
Creative comparison
One ad has 80 clicks from 4,000 impressions and another has 210 from 7,000.
The skill shows 2.0% versus 3.0% while asking whether placement and downstream outcomes are comparable.
Keep reading: Google Ads setup docs ·Claude ad management ·PPC reporting tools guide
Keep building the workflow
Agent skills related to CTR calculator
CPC Calculator
Calculate CPC, compare traffic costs fairly, and explain why a cheaper click is not automatically a better business result.
Client-Ready Monthly Report
Produce a client-ready monthly report: performance vs goals, what changed and why, wins and learnings, next month's plan — clear, honest, and defensible.
Codex Skills for Paid Media
Choose a practical Codex skill pack for paid media and run it with the right context, connectors, and approval boundaries.
Before you install
Frequently asked questions
What is the CTR calculator skill?
It is an Agent Skill — a folder of instructions your AI assistant loads when you ask it to do this job. It follows the open Agent Skills specification, so the same package works across different assistants. Calculate CTR, compare engagement on a consistent basis, and explain what the percentage does and does not prove. Unlike a prompt you paste in, the skill carries its own procedure, checks, and stop conditions, so the assistant works the same way every time you run it.
Which AI assistants can run it?
Claude, Claude Code, ChatGPT, Codex, Cursor, Gemini and Windsurf. Download the ZIP and upload it in assistants that accept skill folders, or point the assistant at the raw SKILL.md file. The install card above has the exact step for each one.
What do I need to connect before I run it?
Adspirer is required, because the skill reads live account data rather than guessing. Google Analytics 4 is optional and only add value when the job calls for them. The skill confirms the connection before it touches a real account, and tells you plainly if something is missing.
Do I need an Adspirer account, and is there a free tier?
The skill itself is free to download and MIT-licensed. To let it read or change real ad accounts you need Adspirer connected: the free tier includes 15 tool calls a month, Plus is $49/mo for 150, Pro is $99/mo for 600, and Max is $199/mo for 3,000. You can install the skill and read what it does before signing up for anything.
Can it change my campaigns without asking?
No. Any new campaign Adspirer creates is created paused, enabling a paused or live campaign needs your confirmation, and destructive actions are gated behind an explicit confirmation flag. Spend, publishing, and live changes wait for your approval every time — installing a skill or a connector is not itself approval to act.
How do I get the best results from it?
Give it the specifics it asks for up front — the account or campaign, the date range, the goal, and what "good" looks like for this business. Let the first pass run read-only so you can check the evidence before anything changes. The starter prompt above is a working template; edit the bracketed parts and paste it in.
How is this different from just asking the assistant directly?
A plain prompt gets you a plausible answer from whatever the model already knows. This skill makes the assistant pull real numbers from your accounts and analytics, follow a fixed procedure, show its evidence, and stop at the points where a person should decide. That is the difference between a confident guess and a ctr calculator you can act on.
Ready to run it against real campaigns? Connect Google, Meta, Amazon, LinkedIn, TikTok, or ChatGPT Ads to your assistant on the free tier — nothing spends or publishes without your approval. Create a free Adspirer account →