Measure your customer retention and business health instantly.
Your Monthly Churn Rate
0%
What is SaaS Churn Rate?
Churn rate is the percentage of customers who stopped using your subscription service during a specific timeframe. For SaaS (Software as a Service) businesses, this metric is critical because it directly impacts your Monthly Recurring Revenue (MRR) and Lifetime Value (LTV).
How to Calculate Churn Rate
The standard formula for customer churn rate is:
Churn Rate = (Lost Customers / Customers at Start of Period) x 100
To find your Lost Customers, you take your starting count, add any new customers gained, and subtract the ending count.
Example Calculation
Imagine your SaaS company starts the month with 500 customers. During the month, you sign up 50 new customers. At the end of the month, you have 520 customers remaining.
Step 1: Find lost customers -> (500 + 50) – 520 = 30 lost customers.
Step 3: Convert to percentage -> 0.06 x 100 = 6% Churn Rate.
Why Churn Matters for SEO and Growth
High churn rates indicate a "leaky bucket" problem. No matter how much traffic your SEO efforts drive to your site, your business cannot scale if you lose customers as fast as you acquire them. A healthy SaaS churn rate typically falls between 3% and 5% monthly for SMB-focused products, while Enterprise SaaS usually aims for <1% monthly churn.
function calculateChurnRate() {
var start = parseFloat(document.getElementById('startCount').value);
var newCust = parseFloat(document.getElementById('newCount').value);
var end = parseFloat(document.getElementById('endCount').value);
var resultArea = document.getElementById('resultArea');
var churnPercentage = document.getElementById('churnPercentage');
var lostCustomersText = document.getElementById('lostCustomers');
if (isNaN(start) || isNaN(newCust) || isNaN(end)) {
alert("Please enter valid numbers for all fields.");
return;
}
if (start <= 0) {
alert("Starting customer count must be greater than zero.");
return;
}
// Calculation Logic
// Lost = (Start + New) – End
var lost = (start + newCust) – end;
// In some cases, people might have negative churn (growth), but usually
// we want to see if customers left.
var rate = (lost / start) * 100;
// Display Logic
resultArea.style.display = 'block';
churnPercentage.innerHTML = rate.toFixed(2) + "%";
if (lost < 0) {
lostCustomersText.style.color = "#10b981";
lostCustomersText.innerHTML = "Net Growth: You gained " + Math.abs(lost) + " more customers than you lost.";
} else {
lostCustomersText.style.color = "#ef4444";
lostCustomersText.innerHTML = "Customers Lost: " + lost;
}
// Smooth scroll to result
resultArea.scrollIntoView({ behavior: 'smooth', block: 'nearest' });
}