Free tool
What are you paying
for attention?
Type your spend, impressions and clicks. Get CPM, CPC and CTR at once, plus what the same budget buys at your current rates.
CPM
$8.00
per 1,000 impressions
CTR
1.12%
clicks ÷ impressions
CPC
$0.71
per link click
At these rates, $1,000.00 buys about 125,000 impressions and 1,400 clicks.
Why people use it
Built for portrait Reels first. Works for TikTok and Shorts too.
Three metrics in one
CPM, CPC and CTR are linked: CPC is CPM divided by CTR times 1,000. Seeing them together shows which one to fix.
Plan the next budget
Enter a budget and see the impressions and clicks it should buy at today's rates.
Private
It runs in your browser. Nothing is saved or sent.
How it works
- 1
Copy three numbers
Amount spent, impressions and link clicks from Ads Manager or TikTok Ads.
- 2
Read the rates
CPM is the price of attention, CTR is how well the ad converts attention into clicks.
- 3
Fix the weak one
High CPM with good CTR: widen the audience. Low CTR: test new hooks and a clearer call to action.
Questions
+How do you calculate CPM?
Divide ad spend by impressions and multiply by 1,000. $500 for 62,500 impressions is a CPM of $8.
+How do CPM, CPC and CTR relate?
CPC equals CPM divided by (CTR × 1,000). At a $10 CPM and 1% CTR, each click costs $1. Raising CTR lowers CPC as much as a cheaper CPM does.
+What is a good CPM for Reels or TikTok ads?
It varies a lot by country, audience and season, and rises in Q4. Compare against your own account's history rather than a universal benchmark.
+Which CTR should I use?
Link CTR (clicks to your site) rather than all clicks, which also counts likes, profile taps and expands.