Here are 10 points on how to calculate CPM in social media marketing

1. Define your campaign goals and target audience.  This will help you determine what success looks like for your campaign and how much you're willing to spend to reach your target audience.

2. Track your impressions. An impression is counted each time your ad is shown, regardless of whether someone clicks on it or not. Most social media platforms will provide you with impression data for your campaigns.

3. Track your total campaign cost. This includes the amount you're spending on your ad buy, as well as any other costs associated with your campaign, such as creative development.

4. Calculate CPM using the formula:  CPM = (Total Campaign Cost / Impressions) x 1000. This will give you the cost per thousand impressions of your ad.

5. Understand that a lower CPM is generally better. This means that you're reaching more people for your advertising budget. However, it's important to consider other factors, such as the quality of the impressions you're getting.

6. Consider industry benchmarks for CPM in your niche.  This will give you a sense of what a typical CPM looks like for your industry. You can find industry benchmarks through research reports or by talking to other social media marketers.

7. Analyze your CPM alongside other social media metrics.  Don't look at CPM in isolation. Consider other metrics, such as click-through rate (CTR) and conversion rate, to get a better sense of how your campaign is performing.

8. Optimize your campaigns to improve your CPM.  There are a number of things you can do to improve your CPM, such as refining your target audience, improving your ad creative, and testing different ad formats.

9. A/B test different ad formats and targeting options. A/B testing allows you to see which versions of your ad perform better. This can help you improve your CPM and overall campaign performance.

10. Continuously monitor and adjust your social media marketing strategy. Social media is constantly evolving, so it's important to keep an eye on your results and make adjustments as needed. By monitoring your CPM and other key metrics, you can ensure that your social media marketing campaigns are on track to meet your goals