SaaS Metrics Calculator

How to Use the SaaS Metrics Calculator

Enter your monthly recurring revenue (MRR), total customer count, new customers this month, churned customers, and your customer acquisition cost (CAC). Optionally override the ARPU if it differs from MRR divided by customers. The calculator instantly computes all essential SaaS metrics including ARR, churn rate, LTV, LTV:CAC ratio, CAC payback period, and quick ratio.

These metrics are the language of SaaS businesses. Whether you are preparing for a board meeting, fundraising, or simply tracking your business health, understanding these numbers is essential. Investors look at these metrics first when evaluating SaaS companies, and tracking them over time reveals trends that inform strategic decisions.

Understanding Key SaaS Metrics

MRR (Monthly Recurring Revenue) is the heartbeat of any subscription business. ARR (Annual Recurring Revenue) is simply MRR times 12 and is the standard metric for enterprise SaaS. Churn rate measures the percentage of customers lost per month. LTV (Customer Lifetime Value) estimates total revenue from an average customer. CAC (Customer Acquisition Cost) is the cost to acquire one customer.

The LTV:CAC Ratio

The LTV:CAC ratio is arguably the most important efficiency metric in SaaS. A ratio of 3:1 means every dollar spent on acquisition generates three dollars of lifetime revenue. Below 1:1, you are losing money on each customer. Above 5:1 may indicate you are not investing enough in growth. The sweet spot for most venture-backed SaaS companies is 3:1 to 5:1.

The SaaS Quick Ratio

The quick ratio measures growth efficiency: new MRR divided by lost MRR. A ratio above 4x is excellent, meaning for every dollar lost to churn, you add four dollars from new customers. This metric helps you understand whether growth is sustainable or if churn is undermining your acquisition efforts.

Benchmarks for SaaS Health

Top-performing SaaS companies achieve monthly churn below 2%, LTV:CAC above 3x, CAC payback under 12 months, and net revenue retention above 100%. Early-stage companies may not hit all benchmarks, but tracking improvement over time is what matters most. Focus on the metrics you can improve and set quarterly targets.

Frequently Asked Questions

What is MRR and how is it calculated?

MRR is the total monthly subscription revenue. Sum all paying customers' monthly fees. For annual plans, divide by 12.

What is a good churn rate for SaaS?

3-5% monthly for SMB SaaS, under 1% for enterprise. Annual churn below 10% is excellent.

How is LTV calculated?

LTV = ARPU / monthly churn rate. With $100 ARPU and 5% churn, LTV = $100 / 0.05 = $2,000.

What is a good LTV:CAC ratio?

3:1 or higher. Below 1:1 means losing money per customer. Above 5:1 may indicate underinvestment in growth.

What is the SaaS quick ratio?

New MRR divided by lost MRR. Above 4x is healthy growth. Below 2x suggests churn is undermining acquisition.