SaaS Metrics Calculator
Calculate MRR, ARR, LTV, CAC ratio, churn revenue, and months to recover CAC — with health benchmarks for each metric.
How it Works
- 1.Enter the number of paying customers and average monthly revenue per customer.
- 2.Enter your monthly churn rate as a percentage (e.g. 2.5 for 2.5%).
- 3.Enter your Customer Acquisition Cost (CAC) — total sales & marketing spend divided by new customers acquired.
- 4.Click Calculate to see MRR, ARR, LTV, LTV:CAC ratio, months to recover CAC, and monthly/annual churn revenue.
Formulas used:
- MRR = Customers × Avg Monthly Revenue
- ARR = MRR × 12
- LTV = Avg Monthly Revenue ÷ Monthly Churn Rate
- LTV:CAC = LTV ÷ CAC
- Months to Recover CAC = CAC ÷ Avg Monthly Revenue
- Monthly Churn Revenue = MRR × Churn Rate
Who Uses the SaaS Metrics Calculator?
Every SaaS founder needs to understand their unit economics — but few have a quick tool to calculate them all in one place. These numbers drive fundraising conversations, pricing decisions, sales team hiring, and product roadmap priorities.
Founders Preparing for Fundraising
Investors will ask about your MRR, ARR, churn rate, and LTV:CAC ratio in the first 5 minutes. Know your numbers cold before every investor meeting — and understand the benchmarks.
SaaS Teams Running Monthly Reviews
Use the calculator in your monthly board or team review to quickly compute updated metrics as you add customers, change pricing, or invest in new acquisition channels.
Founders Deciding on Sales Hires
Before hiring your first sales rep ($100K+ OTE), you need a clear picture of your CAC, months to recover, and LTV:CAC. This calculator shows you if the unit economics support a sales investment.
Investors & Advisors
Quickly compute key SaaS metrics for portfolio companies or pitch evaluations. Paste in numbers from a data room or pitch deck and get a structured health check in seconds.
Frequently Asked Questions
What is MRR and how is it calculated?
MRR (Monthly Recurring Revenue) is the normalised, predictable revenue a SaaS generates each month from active subscriptions. MRR = Number of paying customers × Average monthly revenue per customer. It excludes one-time fees, setup charges, and annual subscriptions should be divided by 12 to get the monthly equivalent.
What is a good LTV:CAC ratio for SaaS?
A LTV:CAC ratio of 3:1 or higher is the standard SaaS benchmark. This means a customer generates 3x the revenue it cost to acquire them. A ratio below 1:1 means you are losing money on every customer. 5:1 or higher may indicate you are under-investing in growth. Most VC-backed SaaS companies target 3-5x.
How do I calculate Customer Acquisition Cost (CAC)?
CAC = Total sales and marketing spend in a period ÷ Number of new customers acquired in that period. Include all costs: ad spend, sales team salaries, marketing tools, and agency fees. Blended CAC includes all customers. Paid CAC includes only customers acquired via paid channels.
What is the difference between LTV and CLTV?
LTV (Lifetime Value) and CLTV (Customer Lifetime Value) are the same metric. They represent the total revenue a business can expect from a single customer over the entire duration of the relationship. The basic formula is: ARPU ÷ Monthly Churn Rate (for a simple gross revenue LTV).
What is a good SaaS churn rate?
For B2B SaaS, a monthly churn rate below 2% is healthy. Best-in-class B2B SaaS companies achieve 0.5–1% monthly churn. B2C SaaS typically sees 3–7% monthly churn. Higher ACV (enterprise) products should target lower churn. Below 5% annual churn is considered excellent for enterprise SaaS.
What does "months to recover CAC" mean?
Months to recover CAC (also called CAC Payback Period) is how long it takes for a customer's monthly revenue to cover what it cost to acquire them. Formula: CAC ÷ Monthly ARPU. Under 12 months is healthy for most SaaS. Under 6 months is exceptional. Over 18 months may indicate a growth capital problem.