Churn Rate Calculator

Use this calculator to estimate churn rate.

What this calculator does

The churn rate calculator helps measure the percentage of customers lost over a period.

It is useful for:

• SaaS analysis
• subscription tracking
• retention review
• growth planning

Formula

Churn Rate = Customers Lost ÷ Customers at Start of Period × 100

Where:

• Customers Lost = customers who cancelled or left
• Customers at Start of Period = opening customer base
• Churn Rate = percentage of customers lost

Example calculation

If:

• Customers lost = 50
• Customers at start = 1000

Then:

• Churn rate = 50 ÷ 1000 × 100
• Churn rate = 5%

What is churn rate?

Churn rate measures how quickly customers stop using your product or service.

Why churn rate matters

This calculation helps businesses:

• understand retention
• forecast growth
• assess customer satisfaction
• improve recurring revenue planning

When to use this calculator

Use this calculator when you want to:

• review customer retention
• benchmark subscription performance
• compare periods
• support SaaS planning

Common mistakes

Common mistakes include:

• using the wrong starting customer number
• mixing voluntary and involuntary churn
• comparing different period lengths
• ignoring expansion revenue context

Churn rate vs net revenue retention

These are closely related.

• Churn rate tracks customer loss
• Net revenue retention tracks revenue retained and expanded

Related calculations

You may also want to use:

• Net Revenue Retention Calculator
• SaaS MRR Calculator
• LTV Calculator

FAQs

What does this calculator do?

It helps you calculate churn rate.

Why is churn rate important?

It shows how quickly customers are being lost over time.

Is lower churn better?

Generally yes, because lower churn supports stronger long-term growth.