Social Media KPIs & Metrics: The Definitive Framework
Every social media metric defined, with formulas, benchmarks, platform guidance, and professional context.
Maintained by SocialDay · 20 metrics defined · Updated annually
Social media metrics are not all created equal. This framework organises them by strategic purpose so professionals can select the KPIs that align with their specific objectives, rather than reporting everything and saying nothing.
The SocialDay principle: KPIs should be chosen before a campaign begins, not selected retrospectively to make results look good. The metrics you report should connect directly to the business objectives you set out to achieve.
Awareness
How many people are you reaching?
Engagement
Is your content resonating?
Conversion
Is social driving action?
Retention
Are you building loyalty?
Awareness & Reach
Awareness metrics measure how many people are seeing your content and how broadly your brand is known. These are top-of-funnel metrics, most relevant when brand visibility and recognition are key objectives.
Reach
The total number of unique users who have seen a specific piece of content or campaign within a defined time period. Each individual is counted once regardless of how many times they saw the content.
Formula
Count of unique users exposed
Benchmark Context
Varies enormously by account size, industry, and platform. Track trends over time rather than absolute numbers.
Impressions
The total number of times a piece of content has been displayed, regardless of whether it was clicked or engaged with. One user can generate multiple impressions.
Reach vs Impressions
Reach = unique people. Impressions = total displays. If impressions are significantly higher than reach, your content is being seen multiple times by the same people.
When to Use
Impressions matter for brand awareness campaigns where repeated exposure drives recall. High impressions with low reach = low new-audience growth.
Share of Voice
SOV
The percentage of all social media mentions within your industry or category that relates to your brand, compared to competitors. SOV is a competitive intelligence metric that shows brand dominance in social conversations.
Formula
Brand Mentions / Total Industry Mentions x 100
Tracking Method
Requires a social listening tool (Brandwatch, Meltwater, Mention, Sprout Social). Define your industry keyword set carefully.
Benchmark
SOV above market share (excess SOV) correlates with long-term market share growth. Track monthly vs. competitors.
Video Views
The number of times a video has been viewed. Definition of a 'view' varies by platform. View counts in isolation are a vanity metric; pair with average watch time and completion rate for meaningful insight.
Platform View Definitions
Facebook/Instagram: 3+ seconds. TikTok organic: any play. LinkedIn: 2+ seconds in viewport. YouTube: 30+ seconds or full video.
Better Paired With
Video Completion Rate, Average Watch Time, and Reach together give a true picture of video effectiveness.
Engagement & Interaction
Engagement metrics measure whether your content is resonating with your audience. Strong engagement signals content quality to platform algorithms and indicates an actively invested community.
Engagement Rate
ER
The percentage of people who engaged with content relative to those who saw it (reach-based) or total followers. More meaningful than raw engagement numbers because it normalises for audience size.
Formulas
ER by Reach: Engagements / Reach x 100. ER by Followers: Engagements / Followers x 100
Industry Benchmarks
Instagram: 1-5% by followers is considered good. LinkedIn: 2-5%. TikTok: often higher at 5-9%. Varies significantly by industry and account size.
Pro Note
Always declare which formula you are using when reporting. ER by reach tends to be higher than ER by followers. Consistency matters most.
Comments
The number of written responses to content. Comments are the highest-quality form of engagement, requiring deliberate effort and signalling genuine interest. They carry more algorithmic weight than passive actions like likes on most platforms.
Algorithmic Value
High on most platforms. LinkedIn and Facebook algorithms weight comments particularly heavily as signals of quality content.
Quality vs Quantity
10 thoughtful comments from target customers are worth more than 100 generic one-word reactions from outside the audience.
Community Signal
Rising comment rates over time indicate a growing, engaged community, a strong sign of social media strategy health.
Saves
The number of times users have saved content to revisit later. Saves are a high-intent engagement signal indicating the user found content valuable enough to return to. On Instagram, saves carry significant algorithmic weight.
Best Content Types
Tutorials, how-to guides, tips, resources, checklists, and reference content typically achieve the highest save rates.
Strategy Tip
Content created to be 'saved for later' should clearly signal its utility in the opening line or hook.
Shares
The number of times a post has been shared by users to their own audience via repost, retweet, reshare, or forwarding. Shares extend organic reach beyond the original audience and are a strong signal of content value.
Organic Amplification
Each share extends your reach to a new audience at zero additional cost. High share rates are one of the strongest indicators of truly resonant content.
Dark Shares
A significant proportion of sharing occurs via private messages (dark social) and is not captured in platform share counts.
Video Completion Rate
VCR
The percentage of viewers who watched a video through to the end (or to a defined completion point, e.g. 75%). Completion rate is a strong indicator of content quality and hook effectiveness.
Formula
Complete Views / Total Views x 100
Benchmarks
For short-form (under 30s), aim for 50%+. For 60-second videos, 30%+ is strong. Anything under 20% warrants hook review.
Conversion & Business Outcomes
Conversion metrics connect social media activity to tangible business results. These are the metrics that matter most to senior stakeholders and are essential for demonstrating the commercial value of social media.
Click-Through Rate
CTR
The percentage of people who clicked a link or CTA within content, relative to the total who saw it. CTR measures how effectively content drives action, bridging the gap between awareness and outcome.
Formula
Clicks / Impressions x 100
Benchmarks
Paid social CTR benchmarks: Facebook avg ~0.9%, LinkedIn ~0.4-0.6%, Instagram ~0.5-1%. Industry and creative quality affect these significantly.
Improving CTR
Strong CTAs, compelling hooks, visual contrast, and clear value propositions in the first line of copy all positively influence click-through rates.
Conversion Rate
The percentage of social media users who complete a desired action (purchase, sign-up, download, enquiry) out of the total who clicked through from social media.
Formula
Conversions / Total Clicks x 100
Attribution Note
Accurate conversion tracking requires UTM parameters and conversion tracking pixels (Meta Pixel, LinkedIn Insight Tag). Without these, social-driven conversions are invisible.
Benchmarks
E-commerce social conversion rates typically range from 1-3%. B2B may be lower. Always compare to your own historical baseline.
Social Media ROI
Return on Investment from social media activity, the financial value generated relative to the cost (staff, tools, paid media, agency fees). Increasingly expected by boards and senior leadership.
Formula
(Revenue - Cost) / Cost x 100
Attribution Challenge
Social media often contributes to conversions attributed to other channels. Multi-touch attribution models help capture social's true contribution.
Reporting Tip
Report both direct ROI (last-click) and modelled contribution. Present both to stakeholders with clear methodology.
Website Traffic from Social
The volume of visitors arriving at a website from social media channels, tracked via Google Analytics 4 or equivalent. This metric links social media activity to website behaviour.
Tracking Setup
Use UTM parameters on all social links (utm_source, utm_medium, utm_campaign) to enable accurate channel attribution in GA4.
Quality Signals
Track alongside bounce rate (or engagement rate in GA4), pages per session, and session duration to assess traffic quality, not just volume.
Dark Social Warning
Private sharing (WhatsApp, DMs, email) shows as 'direct' in analytics. True social-driven traffic is often 20-40% higher than platform attribution suggests.
Paid Social Performance
Paid social metrics measure the efficiency and effectiveness of social advertising spend. These metrics determine how well budgets are being used and guide ongoing optimisation decisions.
Cost Per Click
CPC
The average amount spent for each click on a paid social ad. CPC is a key efficiency metric for traffic and conversion-focused campaigns. Lower CPC generally indicates better performance, but must be evaluated alongside conversion rate.
Formula
Total Ad Spend / Total Clicks
Benchmarks
Meta: £0.30-£0.80 average. LinkedIn: £3-£8 (higher due to professional audience value). TikTok: £0.20-£0.50. Varies greatly by industry.
Reducing CPC
Improve creative relevance, audience targeting accuracy, and landing page quality score. A/B test ad formats and copy consistently.
Cost Per Mille
CPM
The cost per 1,000 impressions of a paid social ad. CPM is the primary efficiency metric for awareness-focused campaigns where the goal is broad reach rather than direct clicks or conversions.
Formula
Ad Spend / Impressions x 1,000
Benchmarks
Meta: £3-£10 average. LinkedIn: £15-£40. TikTok: £3-£8. Audience specificity and auction competition drive CPM.
CPM vs CPC
Use CPM for awareness objectives. Use CPC for traffic or conversion objectives. Mixing them leads to misaligned optimisation decisions.
Return on Ad Spend
ROAS
The revenue generated for every pound (or dollar) spent on paid social advertising. ROAS is the primary commercial efficiency metric for e-commerce and direct-response paid social campaigns.
Formula
Revenue from Ads / Ad Spend (e.g. £4,000 revenue / £1,000 spend = 4x ROAS)
Target ROAS
Minimum viable ROAS depends on product margins. A 3x ROAS on a product with 40% margin is profitable. A 3x ROAS on 20% margin may not be.
Frequency
The average number of times a specific user has been shown a specific ad within a campaign period. High frequency leads to ad fatigue, declining click-through rates, rising CPCs, and negative audience sentiment.
Formula
Impressions / Reach
Refresh Signals
When frequency exceeds 3-4 within a week and CTR is declining, refresh creative. On LinkedIn where audiences are smaller, fatigue can set in at lower frequencies.
Audience & Community Health
Audience metrics measure the size, quality, and growth rate of your social media following. Used carefully, they reflect the health of your community-building efforts.
Follower Growth Rate
The percentage rate at which a social media account is gaining or losing followers over a defined period. More meaningful than total follower count because it accounts for starting size and enables trend analysis.
Formula
((New Followers - Lost Followers) / Starting Followers) x 100
Benchmark
For established accounts, 1-3% monthly growth is healthy. New or growing accounts may achieve higher rates. Negative growth requires immediate investigation.
Context Matters
Total follower count is a vanity metric in isolation. A highly engaged audience of 5,000 is more valuable than 50,000 unengaged followers.
Audience Demographics
The breakdown of a social media audience by age, gender, location, job title (LinkedIn), interests, and other characteristics. Critical for assessing whether a strategy is reaching the intended target audience.
Where to Find
Native analytics on each platform: Instagram Insights, Facebook Audience Insights, LinkedIn Analytics, TikTok Analytics.
Why It Matters
High engagement from the wrong demographics is still the wrong result. Regularly audit whether your growing audience matches your target customer profile.
Strategy Use
Use demographic data to inform content topics, tone of voice, and paid audience targeting. Shifts in demographics should trigger a content strategy review.
Brand Reputation & Sentiment
Reputation metrics measure how your audience feels about your brand, not just whether they are seeing or engaging with your content. Increasingly important as social media matures into a primary customer experience channel.
Sentiment Score
A measure of the overall emotional tone of social media mentions and comments about a brand, classified as positive, negative, or neutral. Monitoring sentiment over time surfaces brand health trends and early crisis signals.
Measurement
Requires a social listening tool: Brandwatch, Sprout Social, Talkwalker, Meltwater, Mention. Native platform tools do not provide robust sentiment analysis.
Reporting
Report as a percentage split (e.g. 72% positive, 18% neutral, 10% negative) and track the trend line. Sudden spikes in negative sentiment require immediate response.
Context
Sentiment is contextual. A spike in negative mentions during a price change is different from sustained negative sentiment across a product category. Always investigate the cause.
Professional Principles: Choosing Your KPIs
- Always choose KPIs before the campaign begins, not after, when you can cherry-pick metrics that look good
- Select no more than 3-5 primary KPIs per campaign or reporting period to maintain strategic focus
- Every KPI should connect directly to a stated business objective. If you cannot explain the connection, don't report the metric
- Context matters more than absolute numbers. Year-on-year and period-on-period trends are more insightful than single data points
- Separate vanity metrics (follower count, total likes) from actionable metrics (engagement rate, conversion rate) in stakeholder reports
- Include qualitative context alongside quantitative data. Community sentiment, notable conversations, and competitive intelligence complete the picture
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