Social media KPIs: what to measure and how to read your monthly report

Scheduling makes sure your posts go out, but it does not tell you whether they were useful. That is the job of social media KPIs: a few numbers you read each month to know what reaches your audience and what goes unnoticed. This guide explains the core indicators in plain language, how to calculate engagement rate, and how to turn numbers into decisions for your next plan. It complements our page on how to schedule posts on all your networks, because measurement is what makes scheduling improve from month to month.

Last updated: November 2026.

What are performance indicators and why do you need them?

A key performance indicator (KPI) is a number you choose in advance to measure progress towards a specific goal. The core idea is that the indicator follows the goal, not the other way round. A restaurant Page that wants more bookings does not measure success by follower count, and a consultant looking for clients on LinkedIn does not care much about likes.

Before opening any report, write your goal in one sentence: “I want people in my city to know about my new shop” or “I want more enquiry messages about my services”. Then choose two or three indicators that serve that sentence, and ignore the rest.

The core social media indicators

Indicator	What it measures	When it matters most
Reach	The number of different people who saw the post	When your goal is brand awareness
Impressions	The number of times the post was shown, even to the same person more than once	To see whether people come back to the same content
Interactions	Likes, comments, shares and saves	To measure whether the post moved people
Engagement rate	Interactions relative to reach or to followers	To compare posts or periods fairly
Posting consistency	The number of posts per week	To check that your plan is actually being carried out
Incoming messages and comments	The number of conversations your audience started	When your goal is sales or enquiries

Note that reach and impressions differ: a post that reached 1,000 people may have 1,500 impressions because some saw it twice. Reach is the number closest to the question “how many people saw my message?”.

How is engagement rate calculated?

Engagement rate is the indicator that allows a fair comparison, because a post that reached 5,000 people will usually get more interactions than one that reached 500 without necessarily being better. There are two common ways to calculate it:

• By reach: (total interactions ÷ reach) × 100. This measures the quality of the post among the people who actually saw it.
• By followers: (total interactions ÷ follower count) × 100. Useful for comparing your account with others of the same size.

Example: a post reached 2,000 people and got 80 likes, 12 comments and 8 shares. Total interactions are 100, so the engagement rate by reach is (100 ÷ 2,000) × 100 = 5%.

An important caveat: different tools do not calculate engagement the same way; some add saves or clicks and some do not. So compare your numbers within the same tool over time, and do not compare your rate with a figure from an article whose method you do not know.

A worked example: two months of a small shop

Take a clothing shop’s account on Instagram and Facebook. The figures below are an illustrative example we made up, not real data, but they resemble an ordinary monthly report:

Indicator	Month 1	Month 2
Number of posts	12	16
Reach	12,000	15,000
Total interactions	360	375
Engagement rate by reach	3%	2.5%
Average interactions per post	30	about 23

At first glance the second month looks better, because reach went up. A careful reading says something else: the four extra posts brought more reach, while each post’s share of interactions fell. Quantity went up and quality dropped a little.

The logical decision is not to go straight back to 12 posts, but to open the weakest posts and find what they have in common. If most of them turn out to be product photos with no story and no question, the next step is to keep the posting pace while improving that type of post, then compare again in month three.

Which social media KPIs fit your goal?

• Brand awareness: reach, follower growth and reach per network.
• Building relationships: engagement rate, number of comments, saves and shares.
• Sales or bookings: private messages and enquiries, and orders where customers said they found you on social media.
• Reputation: average rating on Google and Facebook, and the number of reviews you have not answered yet.

The last three indicators do not all appear in reach reports; they live in the conversations themselves. That is why KPIs are closely tied to social media monitoring: the numbers tell you what happened, the comments and messages tell you why.

Indicators worth watching on each network

The core indicators are roughly the same everywhere, but each platform’s nature makes some numbers matter more than others.

Instagram

Watch saves and shares more than likes: someone who saves your post plans to come back to it, and someone who shares it introduces you to others. Compare Reels with photos and carousels within your own account, because every audience has its preferred format.

Facebook

Comments, shares and private messages reveal real interest, especially for local businesses whose audience asks about prices, addresses and opening hours. A post with few likes can bring more enquiries than a popular one.

LinkedIn

On LinkedIn, a comment is worth more than a like, because it opens a discussion with people who may become clients or partners. Watch who comments, not just how many: one comment from a decision-maker in your field can be worth dozens of likes.

Read your monthly report in 20 minutes

1. Compare with the previous period: did reach and engagement rise or fall compared with last month? The trend matters more than the absolute number.
2. Open the three best posts: what do they have in common? The format, the topic, the time, the dialect?
3. Open the three weakest: was the topic weak, the image unclear, or was it posted when your audience is less active?
4. Check consistency: did you actually publish what you planned each week? Sometimes lower numbers simply mean you posted less.
5. Write down one decision: such as “one extra Reel a week” or “try evenings instead of mornings”, and apply it next month.

How often should you review your KPIs?

You do not need to open reports every day: daily numbers swing a lot and can push you into hasty decisions. A simple rhythm of three reviews is enough for most small businesses:

• Every week (5 minutes): make sure scheduled posts actually went out and none failed, and that no comments or messages were left unanswered.
• Every month (20 minutes): read the report with the steps above and leave with one decision for the next month.
• Every three months: review the goal itself. Is brand awareness still your priority, or is it time to focus on enquiries and sales? If the goal changes, the indicators change with it.

A practical tip: do not judge a post in the first hours after publishing. Wait a few days before ranking it among the strongest or weakest, because some posts keep reaching new people after the day they go out.

The performance report in Postilik

In plans that include analytics, Postilik brings your accounts’ performance into one report for 7, 30 or 90 days: reach, impressions, interactions, engagement rate, and the number of published and scheduled posts, compared with the previous period. The report shows reach by network, top posts and week-by-week consistency, and it can be printed to share with a partner or client.

In the posts list, you see each post with its status, reach and likes, and filter by network, period or status: scheduled, published, draft or failed. The Solo plan focuses on writing and scheduling for a single network and does not include analytics.

Common measurement mistakes

• Chasing followers: follower count is pleasant to look at, but it does not mean anyone sees your posts or buys from you.
• Judging a single post: one weak post does not prove the topic failed. Judge a group of posts of the same type.
• Changing everything at once: if you change the time, format and style in the same month, you will not know which change made the difference.
• Ignoring seasons: Ramadan, summer and back-to-school change audience behaviour. Compare Ramadan with last Ramadan, not with the month before.
• Mixing numbers from different tools: if you read reach in the app one time and in another tool the next, the gap may come from the calculation, not the performance. Pick one source and stick to it.
• Forgetting negative comments: rising engagement is not always good news; it may come from a wave of complaints. Read the comments themselves and deal calmly with abusive ones; our guide on how to hide comments on Facebook and Instagram explains how to do it without deleting them.

From measurement to scheduling

Indicators are worthless if they stay in the report. Every decision should show up in next month’s calendar: a new posting time on Facebook, an extra format on LinkedIn, or fewer, better posts. And to save time on execution, read our guide to social media automation.

If you present these numbers to a client, follow our monthly client report template to turn them into a summary and an action plan.