Know your social numbers in seconds
Free calculators for engagement rate, ad costs and audience growth. Built for creators, marketers and agencies who report on social every week.
Example values. Click any card to run your own numbers.
Everything you need for your next report
From a single post to a full paid campaign, get the metric you need without opening a spreadsheet.
Pick a category
Every calculator works on desktop and mobile, with results you can copy or share.
Ad Cost Metrics
Work out click rate, CPM, CPC and return on ad spend for paid social campaigns.
- CTR Calculator
- CPM Calculator
- CPC Calculator
- ROAS Calculator
- Conversion Rate Calculator
- CPA Calculator
- Break-Even ROAS Calculator
Audience Growth
Project follower growth and see what each new follower costs you.
- Cost Per Follower Calculator
- Follower Growth Calculator
- Follower Goal Calculator
- Follower Churn Rate Calculator
Most popular calculators
The tools social media teams open most often.
Engagement Rate Calculator
Enter your follower count and the reactions on a post to get its engagement rate.
Video View Rate Calculator
Enter views and impressions to see what share of viewers actually watched your video.
CTR Calculator
Enter clicks and impressions to get your click-through rate.
CPM Calculator
Enter spend and impressions to get the cost for every 1,000 impressions.
CPC Calculator
Enter spend and clicks to get your average cost per click.
ROAS Calculator
Enter ad revenue and ad spend to get your return on ad spend.
Why marketers use FollowMaths
Simple tools that get out of your way.
Results update while you type, so you can test scenarios in seconds.
Your numbers stay in your browser. Nothing you enter is stored or sent to us.
No account, no trial, no limits. Share a result with a single link.
Ready to grow your audience?
Use the numbers to plan your next move, then reach more people with Mextera’s social media growth services.