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Customer Lifetime Value Calculator

Calculate CLV, average customer lifespan, and CLV:CAC ratio. Understand the long-term value each customer brings to your SaaS business.

CLV Inputs

Defaults to 100%. Set to your actual gross margin for a more accurate CLV.

Results

Customer Lifetime Value

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Average Customer Lifetime

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Increase CLV by reducing churn

ChurnWin identifies at-risk customers with AI, collects feedback automatically, and gives you the insights to retain more customers longer — directly improving your CLV.

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Understanding Customer Lifetime Value

What is Customer Lifetime Value?

Customer Lifetime Value (CLV, also written as CLTV or LTV) is the total revenue you can expect from a single customer over the entire duration of their relationship with your business. For SaaS companies, CLV is arguably the most important unit economic metric because it tells you how much a customer is truly "worth."

How to calculate CLV

The standard formula for SaaS CLV is:

CLV = (ARPU x Gross Margin) / Monthly Churn Rate

For example, if your ARPU is $50/month, gross margin is 80%, and monthly churn is 3%, your CLV is ($50 x 0.80) / 0.03 = $1,333. The average customer lifetime is 1 / 0.03 = 33.3 months (about 2.8 years).

Why does CLV matter?

CLV is the foundation of sustainable growth. If you don't know CLV, you can't answer fundamental questions like "How much can I spend to acquire a customer?" or "Is my business model viable?"

  • Acquisition budgeting — CLV sets the ceiling for your Customer Acquisition Cost (CAC).
  • Investor confidence — Strong CLV signals a durable, profitable business model.
  • Strategic focus — CLV shifts focus from pure acquisition to retention and expansion.

CLV:CAC ratio benchmarks

The CLV-to-CAC ratio measures how efficiently you turn acquisition spend into long-term revenue. Widely cited benchmarks from venture capital firms:

  • 5:1 or higher — Excellent. You may be under-investing in growth.
  • 3:1 — The gold standard. Healthy, sustainable unit economics.
  • 1:1 to 3:1 — Workable, but watch for margin compression.
  • Below 1:1 — Unsustainable. You're losing money on every customer.

David Skok, a well-known SaaS investor, recommends a CLV:CAC ratio of at least 3:1 and a CAC payback period of under 12 months.

How to improve CLV

  1. Reduce churn — The single biggest lever. Cutting monthly churn from 5% to 3% nearly doubles CLV.
  2. Increase ARPU — Through pricing optimization, upsells, and usage-based pricing tiers.
  3. Improve gross margin — Reduce cost of goods sold through infrastructure optimization and automation.
  4. Drive expansion revenue — Cross-sell complementary features and add-ons to existing customers.

ChurnWin helps you improve CLV by reducing churn with AI-powered risk scoring, automated feedback collection, and actionable retention insights — all connected directly to your Stripe data.