function calculateEngagement() {
// 1. Get input values
var likes = parseFloat(document.getElementById('merc_likes').value);
var comments = parseFloat(document.getElementById('merc_comments').value);
var shares = parseFloat(document.getElementById('merc_shares').value);
var followers = parseFloat(document.getElementById('merc_followers').value);
// 2. Validate inputs (handle empty or NaN)
if (isNaN(likes)) likes = 0;
if (isNaN(comments)) comments = 0;
if (isNaN(shares)) shares = 0;
// Validation: Followers must be greater than 0
if (isNaN(followers) || followers <= 0) {
alert("Please enter a valid follower count greater than 0.");
return;
}
// 3. Perform Calculations
var totalInteractions = likes + comments + shares;
var engagementRate = (totalInteractions / followers) * 100;
// 4. Determine Verdict (Benchmarks based on industry standards)
var verdictText = "";
if (engagementRate = 1 && engagementRate = 3.5 && engagementRate < 6) {
verdictText = "High Engagement (Excellent)";
} else {
verdictText = "Viral Level Engagement!";
}
// 5. Update the UI
document.getElementById('merc_total_interactions').innerHTML = totalInteractions.toLocaleString();
document.getElementById('merc_final_rate').innerHTML = engagementRate.toFixed(2) + "%";
document.getElementById('merc_verdict').innerHTML = verdictText;
// Show result box
document.getElementById('merc_result').style.display = 'block';
}
Understanding Monthly Engagement Rate
The Monthly Engagement Rate is a critical Key Performance Indicator (KPI) for social media managers, influencers, and digital marketers. Unlike simple vanity metrics like "Total Followers," the engagement rate measures how actively involved your audience is with your content over a specific month.
High engagement signals that your content resonates with your audience, which algorithms on platforms like Instagram, LinkedIn, TikTok, and Facebook prioritize over passive follower counts. Whether you are tracking performance for a personal brand or a corporate account, knowing this percentage helps validate your content strategy.
How the Formula Works
This calculator uses the standard formula for calculating engagement relative to audience size (Follower Count). The formula determines the percentage of your followers who interacted with your content during the month.
Total Likes: The sum of all likes received on posts published within the month.
Total Comments: The sum of all comments. Comments are often weighted heavier than likes in some internal assessments as they require more effort.
Total Shares & Saves: These are high-value interactions indicating your content was worth redistributing or keeping for later.
Followers: Your total audience size at the time of calculation.
What is a Good Engagement Rate?
Benchmarks vary significantly by industry and platform, but general standards for Instagram and Facebook are as follows:
Less than 1%: Generally considered low. This may indicate ghost followers or content that isn't resonating.
1% to 3.5%: This is the industry average. It represents a healthy, active account.
3.5% to 6%: Considered a high engagement rate. Your audience is very loyal.
Above 6%: Exceptional. Usually seen in viral accounts or micro-influencers with very tight-knit communities.
Why Calculate Monthly Instead of Per Post?
While per-post engagement helps you analyze specific content pieces, the Monthly Engagement Rate provides a macro view of your account's health. It answers the question: "Is my account growing in influence over time?" By tracking this metric month-over-month, you can identify seasonal trends, the impact of campaign shifts, and overall brand sentiment.
Tips to Improve Your Rate
If your calculator results are lower than expected, consider these strategies:
Call to Action (CTA): Explicitly ask questions in your captions to encourage comments.
Post Timing: Analyze your insights to post when your followers are most active.
Interact Back: Replying to comments within the first hour can boost the post's visibility.
Diversify Formats: Use Reels, Stories, and Carousels to reach different segments of your audience.