Free SaaS Metrics Calculator for MRR, Churn, LTV, and CAC
Enter a few numbers to compute MRR, churn, LTV, and CAC in seconds, and see exactly where your SaaS growth stands with a clear breakdown.
All Key Metrics At Once
Compute MRR, churn, LTV, and CAC together so you see the full growth picture, not isolated numbers.
No Spreadsheet Wrangling
Skip formula errors and broken templates. Enter a few inputs and get accurate results instantly.
Investor Ready Numbers
Walk into any board meeting or investor call knowing exactly where your growth metrics stand.
The saas metrics calculator turns your revenue and customer data into the core numbers that measure a subscription business. Enter figures like monthly revenue, customer counts, and churn, and the tool computes MRR, ARR, churn rate, lifetime value, and customer acquisition cost. Founders and marketers get a fast, consistent read on growth and retention health without building spreadsheets, so they can spot problems and make decisions from accurate metrics.
What the SaaS metrics calculator measures
The calculator computes the metrics that define subscription performance. In plain terms, it sums recurring revenue into MRR and ARR, divides lost customers or revenue by the starting base to find churn rate, and estimates lifetime value from average revenue and retention. It also compares acquisition spend against new customers to produce CAC, then relates LTV to CAC so you can judge whether growth is efficient. Instead of juggling formulas by hand, you enter a few inputs and receive a clear snapshot of how your SaaS business is really performing.
How to improve your SaaS metrics
Once you see the numbers, the levers become clear. Reduce churn by improving onboarding and support, since retention lifts both MRR and lifetime value at the same time. Grow MRR through expansion revenue such as upsells and higher-tier plans, which often costs less than new acquisition. Lower CAC by focusing spend on channels with the best payback, and lengthen customer lifespan to widen the LTV to CAC ratio. Recheck the metrics each month so you can tell whether a change actually moved retention, revenue, or acquisition efficiency. Comparing this month against the last few reveals whether your efforts are compounding or a single metric is quietly slipping.
Benchmarks and when to use it
Use the calculator during monthly reviews, board updates, and fundraising prep, whenever you need trustworthy numbers rather than estimates. A common health benchmark is an LTV to CAC ratio around three to one, with CAC payback ideally under a year, though targets vary by stage and market. Watch churn closely, since even small monthly churn compounds into large revenue loss over a year. Running the same inputs consistently lets you track trends over time and catch a weakening metric before it threatens your growth. Sharing the same definitions across your team also prevents confusion when finance, sales, and product each report their own numbers.
Frequently Asked Questions
What metrics does the SaaS Metrics Calculator compute?
It calculates monthly recurring revenue, churn rate, customer lifetime value, and customer acquisition cost from a handful of inputs, and shows how the numbers relate so you can spot weak points fast.
What inputs do I need to get started?
Basic figures you likely already track: revenue, customer counts, cancellations for the period, and sales and marketing spend. Enter those and the calculator handles every formula for you in seconds.
Is the SaaS Metrics Calculator free?
Yes, it is free after creating a Brainito account. Run it monthly through 2026 to track how MRR, churn, LTV, and CAC move as you grow, and compare periods to see whether changes are working.
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