---
title: "Customer Churn Rate Calculator | MCC Solutions"
description: "Enter customers at the start of a period and customers lost to get churn, retention and average lifetime. Free and private."
url: "https://mcc-solutionsnj.com/bookkeeping/customer-churn-rate-calculator"
---

Free tool

# Customer churn rate calculator

See what share of customers you lose in a period.

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Keeping your own books? Tallyfinch does invoices, bank import and reports on your computer. [See Tallyfinch](/bookkeeping/mcc-books-downloadable-bookkeeping-software)

Customers at start of period

Customers lost during the period

Prefer to talk it through? [Take the free books check](/bookkeeping/health-check) or [contact us](/contact).

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## Put this tool on your own site

Free to use. Paste this where you want it to appear. It runs in the visitor's browser, so nothing they enter is sent to us.

[See every calculator you can embed](/embed)

How it works

## How it works

**Churn rate = customers lost divided by customers at the start of the period.** Retention is 100% minus churn. Average lifetime is 1 divided by the churn rate, in the same time periods.

FAQ

## About this calculator

**Should new customers be counted?**

Not in the churn rate. Use the customers you had at the start and how many of them left.

**What period should I use?**

Monthly is common for subscriptions. Use the same period for churn and the lifetime result.

**What is a good churn rate?**

It depends on the business and customer type, so compare with your own history and similar businesses.

**Is anything saved?**

No. The math runs in your browser and nothing you enter is sent to us.

**Is this tax or financial advice?**

No. It is a calculator for general information. Check the numbers against your own records, and ask an accountant before you act on them.

Related: [ltv and cac calculator](/bookkeeping/ltv-and-cac-calculator), [net profit margin calculator](/bookkeeping/net-profit-margin-calculator). See [all free tools](/free-tools). More free tools: [Debt-to-equity ratio calculator](/bookkeeping/debt-to-equity-ratio-calculator), [Receivables turnover calculator](/bookkeeping/accounts-receivable-turnover-calculator), [Operating margin calculator](/bookkeeping/operating-margin-calculator), or [see all free tools](/free-tools).

Free

### Month-End Close Checklist (PDF)

The five-day close, one page to print. Enter your email and we send a link to confirm it is yours, then the download. We may email you about new toolkits, and every email has an unsubscribe link.

General information, not tax or legal advice. [How we write and check our tools](/editorial-standards).

Do it yourself

### Monthly KPI Dashboard Workbook

Type in each month's revenue, costs, receivables and cash, then pick a month and see the KPIs and charts that matter, with change from last month and the same month last year.

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Tallyfinch

### Books you keep on your own computer

Tallyfinch does invoices, bills, bank import, reconciliation and the main reports, in a file you own. $99 once, then $5 a month for updates; the app keeps working if you stop the plan. It does not do payroll or sales tax filing. The free download records up to 60 entries.

[See Tallyfinch](/bookkeeping/mcc-books-downloadable-bookkeeping-software) [Download it free](/tools/pro/trial/mccBooks) [Compare the three apps](/software)

## Want your books and numbers handled?

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