ToolNest logoToolNest.

Free SaaS Churn Rate Calculator

Last updated: 2026-10-08

Quick answer: Churn is the leak in your subscription bucket: the share of customers — or revenue — that disappears each period. This free SaaS churn rate calculator computes both customer (logo) churn and revenue churn: enter starting customers and losses (or derive losses from start, new, and end counts), or plug in MRR movements to get gross churn, net churn, and net revenue retention (NRR), plus a correctly annualized rate and a plain-English health verdict against SaaS benchmarks. Everything runs in your browser; your metrics never leave your device.

Churn is the leak in your subscription bucket: the share of customers — or revenue — that disappears each period. This free SaaS churn rate calculator computes both customer (logo) churn and revenue churn: enter starting customers and losses (or derive losses from start, new, and end counts), or plug in MRR movements to get gross churn, net churn, and net revenue retention (NRR), plus a correctly annualized rate and a plain-English health verdict against SaaS benchmarks. Everything runs in your browser; your metrics never leave your device.

Don't know "lost"? Fill in the two optional fields and it's derived: lost = start + new − end.
Guidance only — healthy benchmarks vary by segment and price point. Define your rules (trials in or out, downgrades as churn) and apply them consistently.

✓ Free forever  ·  ✓ No signup  ·  ✓ Runs in your browser — your data never leaves your device.

How to Use the SaaS Churn Rate Calculator

  1. Pick the Customer churn tab for logo churn, or the Revenue churn tab for MRR-based churn.
  2. Customer mode: enter customers at the start of the period and customers lost — or fill in end-of-period and new-customer counts and the tool derives lost as start + new − end.
  3. Choose the period length (monthly, quarterly, annual) so the rate can be annualized correctly.
  4. Revenue mode: enter starting MRR plus churned, downgraded, and expansion MRR.
  5. Click Calculate Churn: you get the churn rate, retention, annualized churn (or gross/net churn and NRR), plus a benchmark verdict.

Why Use Our SaaS Churn Rate Calculator?

Common Use Cases

SaaS Churn Rate Calculator vs Alternatives

If your billing already feeds an analytics platform, trust its dashboards — they're built on your real subscription events. For a quick check, a board slide, or due-diligence prep without wiring up another subscription, this page gives you logo churn, revenue churn, and NRR in seconds, free.

Frequently Asked Questions

How do you calculate churn rate?
Churn rate = customers lost during the period ÷ customers at the start of the period × 100. Example: 1,000 customers at the start of January, 40 cancel during the month → 40 ÷ 1,000 = 4% monthly churn. If you don't have the 'lost' number, derive it: lost = start + new − end (e.g. 1,000 start + 80 new − 1,040 end = 40 lost). The calculator above does both.
What is a good churn rate for a SaaS company?
Industry surveys commonly cite these monthly logo-churn bands: under 2% is excellent (typical of enterprise SaaS with annual contracts), 2–5% is typical for SMB SaaS, 5–10% is high and worth investigating, and above 10% is a leaky bucket. Context matters: low-price self-serve products churn faster than high-touch enterprise ones, so compare against your own segment and trend, not just the band.
What is the difference between customer churn and revenue churn?
Customer (logo) churn counts accounts: what share of customers left. Revenue churn weights them by dollars: what share of MRR left. They diverge when customers vary in size — losing ten $10/month hobbyists barely registers in revenue churn, while losing one $10,000/month account screams. B2B teams should treat revenue churn (and NRR) as the primary number.
How do you convert monthly churn to annual churn?
Not by multiplying by 12 — monthly churn compounds. The correct formula is annual churn = 1 − (1 − monthly churn)¹². At 3% monthly, the naive ×12 says 36% annual; the real number is about 31%. At 5% monthly, ×12 says 60% but the truth is about 46%. The calculator annualizes correctly for monthly, quarterly, and annual inputs.
What is net revenue retention (NRR) and what is a good NRR?
NRR = (starting MRR − churned − downgraded + expansion) ÷ starting MRR × 100. It answers: did existing customers grow or shrink this period, ignoring new logos. Above 100% means expansion outpaces losses — the holy grail, typical of best-in-class SaaS (often 110–130%). 90–100% is acceptable; below 90% means the base is shrinking and acquisition is just refilling the bucket.
Should free trials count in churn?
Only if you define it that way and stay consistent. Most teams exclude trials from paid churn (trial conversion is a separate funnel metric) and measure churn on paying customers only. Whatever you choose — trials in or out, downgrades as churn or not — document it and apply it every period, or your trend line is meaningless.
What is negative churn?
Negative net revenue churn: expansion revenue (upsells, upgrades, seats added) exceeds the revenue lost to cancellations and downgrades, so net churn drops below zero and NRR rises above 100%. It's the strongest signal of product-market fit in SaaS — the existing base grows even with zero new customers.

Related Tools

  • Startup Runway Calculator — Free startup runway calculator: enter cash, monthly burn, and revenue to get net burn rate...
  • Percentage Calculator — Free percentage calculator: find X% of Y, what percent one number is of another, and perce...
  • Invoice Generator — Free invoice generator: build professional invoices with line items, tax and discounts, th...