Digitech Glide · CLV Calculator

Customer Lifetime Value Calculator

Find out how much profit one customer brings your business over the whole relationship. Enter four numbers and this free customer lifetime value calculator does the maths as you type.

Free · No signup to use · Results update instantly

Your numbers

What a customer spends per order or invoice, on average.
How many times a typical customer buys from you in a year.
How many years a typical customer keeps buying from you.
The share of each sale left as profit after direct costs.
Customer lifetime value
$1,800
Purchase value × frequency × lifespan × margin

Every customer is worth $1,800 in profit over their lifetime.

$600Annual customer value
$6,000Lifetime revenue

At the 3:1 benchmark, you can spend up to $600 to win each customer.

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Get the free CLV Calculator (Excel)

Take the full version into your next budget meeting. Plug in your own figures and share it with your team.

  • CLV:CAC health check with a clear verdict and payback period
  • Churn-based LTV tab for subscriptions and retainers
  • What-if scenarios showing which lever grows CLV fastest

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    A free tool by Digitech Glide. Figures are estimates based on the numbers you enter.

    What Is Customer Lifetime Value (CLV)?

    Customer lifetime value (CLV) is the total profit a business earns from one customer across the whole relationship, from their first purchase to their last. You will also see it called lifetime value or LTV. CLV and LTV are the same metric, and this calculator works for both.

    For B2B businesses it is one of the most useful numbers you can know. Deals are larger, sales cycles are longer and a good client can stay for years, so the value of keeping a customer usually dwarfs the value of any single sale. Service firms often call it client lifetime value, and the client lifetime value calculation is identical: what a client spends, how often, for how long, and how much of it you keep.

    Our position: measure CLV in profit, not revenue. A customer who spends 10,000 at a 5% margin is worth less than one who spends 3,000 at 40%. Revenue-based CLV flatters the numbers and quietly encourages overspending on acquisition. That is why the customer lifetime value CLV calculator above asks for your margin.

    How to Calculate Customer Lifetime Value

    The standard customer lifetime value calculation multiplies four numbers you already have.

    CLV = Average purchase value × Purchase frequency × Customer lifespan × Profit margin

    Worked example

    A B2B supplier has an average invoice of $500. Customers order 4 times a year, stay for 3 years, and each sale carries a 30% profit margin.

    • Annual revenue per customer: $500 × 4 = $2,000
    • Lifetime revenue: $2,000 × 3 years = $6,000
    • Customer lifetime value: $6,000 × 30% = $1,800

    Each customer is worth $1,800 in profit. That is the figure the calculator shows with its starting numbers, so you can check the maths yourself.

    Where to find each number

    An average customer lifetime value calculation is only as reliable as the averages you feed it. Take them from the last 12 months of sales data:

    • Average purchase value: total revenue divided by the number of orders or invoices.
    • Purchase frequency: number of orders divided by the number of unique customers.
    • Customer lifespan: the average number of years between a customer’s first and last purchase. If your business is young, estimate it as 1 divided by your annual churn rate (the share of customers you lose each year).
    • Profit margin: revenue minus the direct cost of delivering the sale, divided by revenue. Use gross or contribution margin, not net profit after overheads.

    Customer Lifetime Value LTV Calculation for SaaS and Subscriptions

    When customers pay monthly and some cancel every month, a churn-based formula is more accurate, because lifespan comes directly from how quickly you lose customers.

    CLV = (Monthly revenue per customer × Gross margin) ÷ Monthly churn rate

    Example: a customer pays $200 a month, your gross margin is 70%, and 4% of customers cancel each month. CLV is ($200 × 70%) ÷ 4% = $3,500. A 4% monthly churn rate also tells you the average customer stays for 25 months, because 1 ÷ 0.04 = 25.

    Monthly churn rate is the number of customers who cancelled in a month divided by the number you had at the start of that month. Use at least three months of data, because a single month can swing wildly. The Excel version of this tool includes a ready-made subscription tab for this customer lifetime value LTV calculation.

    The CLV to CAC Ratio and the 3 to 1 Benchmark

    CLV on its own tells you what a customer is worth. Compare it with customer acquisition cost (CAC), meaning the total sales and marketing spend needed to win one new customer, and you know whether your growth is actually profitable.

    CLV:CAC ratio = CLV ÷ CAC. The widely used benchmark is 3:1, where every customer returns three times what it cost to win them. Here is how to read your ratio:

    • Below 1:1. You lose money on every new customer. Stop scaling spend until this is fixed.
    • 1:1 to 3:1. Profitable on paper, but thin once salaries and overheads are covered. Tighten targeting or raise CLV.
    • 3:1 to 5:1. Healthy. Acquisition spend is paying back well.
    • Above 5:1. Strong, and often a sign you are under-investing in growth and leaving market share to competitors.

    Using the worked example, a $1,800 CLV means you can spend up to $600 to win a customer and still hit 3:1. If your cost per customer from paid ads is creeping past that line, the fix is rarely a bigger budget. Look at conversion rates first. Our guide on turning high traffic into leads covers where most of that leakage happens.

    A quick honest caveat: 3:1 is a rule of thumb, not a law. A business that earns back its CAC within a few months can run a lower ratio safely, while one with a long payback period needs more headroom.

    How to Increase Your Customer Lifetime Value

    CLV has four levers. Pull any one of them and every customer becomes more valuable.

    1. Raise average purchase value

    Package services into tiers, bundle related products, offer annual pre-payment in exchange for a better rate, and suggest the natural next item at checkout or renewal.

    2. Increase purchase frequency

    Send reorder and renewal reminders by email and WhatsApp before customers run out, set up replenishment schedules, and reward repeat orders rather than first orders.

    3. Extend customer lifespan

    Onboard new customers properly, run regular account reviews, and fix support response times. Keeping a customer costs far less than replacing one.

    4. Protect your profit margin

    Price on the value you deliver rather than on cost, reduce delivery waste, and discount less often. A few margin points lift CLV without winning a single extra sale.

    Because CLV multiplies its four levers, small gains compound. Improve each one by 10% and CLV grows by about 46%, not 40%. The what-if tab in the free Excel calculator shows which lever moves your own numbers fastest.

    If the harder problem is acquisition cost rather than CLV, a search channel that does not charge you per click changes the maths. See how our SEO services and client case studies have lowered the cost of winning customers.

    Common Mistakes in Customer Lifetime Value Calculation

    • Using revenue instead of profit. It inflates CLV and makes expensive acquisition look affordable.
    • Averaging every customer together. Your best segment may be worth five times your worst. Calculate CLV by channel, product line or customer size where you can.
    • Guessing lifespan. If you do not have years of history, derive it from churn instead of picking a hopeful number.
    • Comparing against a partial CAC. Include ad spend, sales salaries, tools and agency fees, or the ratio will look healthier than it is.
    • Treating CLV as fixed. Prices, retention and margins change. Recalculate every quarter and track the trend.

    Turn a Higher CLV into Profitable Growth

    Knowing your customer lifetime value is step one. Digitech Glide helps businesses lower acquisition costs and raise the value of every customer, through SEO, performance marketing and conversion-focused websites built around your numbers. Want to check your website while you are here? Try our free SEO Website Grader.

    Book a Free Strategy Call

    Frequently Asked Questions

    There is no universal figure, because CLV depends on your price point, margin and industry. What matters is CLV compared with what it costs to win a customer. Aim for a CLV at least three times your customer acquisition cost.

    Yes. CLV (customer lifetime value) and LTV (lifetime value) are two names for the same metric. Subscription businesses tend to say LTV and other businesses tend to say CLV, but the meaning is identical.

    Multiply average purchase value by purchase frequency per year, customer lifespan in years and profit margin. For example, $500 × 4 × 3 × 30% = $1,800 in lifetime profit per customer.

    Use (monthly revenue per customer × gross margin) ÷ monthly churn rate. A customer paying $200 a month at a 70% gross margin with 4% monthly churn has a CLV of $3,500.

    3:1 is the common benchmark, meaning each customer returns three times what they cost to acquire. Below 1:1 you lose money on every customer, and above 5:1 you may be under-investing in growth.

    Profit. Revenue-based CLV overstates what a customer is worth and can push you to overspend on acquisition. Use gross or contribution margin in the calculation.

    Yes. The customer lifetime value calculator online on this page is completely free with no signup. The Excel version is free too. You simply share your email and WhatsApp number to download it.

    Every quarter, and after any price change, product launch or shift in retention. The trend over time tells you far more than a single snapshot.