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CAC Calculator

Calculate your customer acquisition cost.

Growing your businessStep 3 of 7

Best for: Use it to judge marketing efficiency, set acquisition budgets, or compare channels.

Complete guide
See benchmark ranges Why this result happened View assumptions
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Result

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Customer acquisition cost (CAC): ₹5,000
Standard formula Private — runs in your browser, no account

What to do next

Part of the 🚀 Grow a Business pathNext: LTV CalculatorCAC only makes sense next to lifetime value.Benefit: See if each customer is worth more than they cost. · Impact: High - the core SaaS health check.
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More about this result
Result quality
Type
Industry Standard
Method
Industry-standard method
Confidence
High

Uses the standard formula and conventions the industry relies on.

What this means

CAC is your cost per new customer. It only makes sense next to lifetime value (LTV): a healthy business earns several times its CAC back per customer (LTV:CAC of 3:1 is a common benchmark).

What impacts this result most?
  1. 1.
    Sales & marketing spendHigh impact

    More spend per customer raises CAC.

  2. 2.
    New customersHigh impact

    More customers for the same spend lowers CAC.

How to improve this result
  • Improve conversion to win more customers per dollar
  • Shift budget to cheaper channels
  • Lift retention to improve LTV:CAC
3 Important insights
  • Margin (on price) and markup (on cost) are not the same.
  • Your break-even depends on fixed vs variable costs.
  • A small price increase moves profit more than a small cost cut.

Most startups fail not from weak sales but from CAC quietly outrunning lifetime value. — U.S. SEC (investor.gov)

People usually ask next
Is this above average? Compare LTV Calculator

Challenge: Can you get LTV:CAC above 3:1?Try it →

Worth a revisit later — your costs and margins change.

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How it's calculated & sources
The CAC Calculator uses the standard formula for this calculation. It runs entirely in your browser, so your inputs are never uploaded. Figures are educational estimates, not professional advice — verify important decisions with a qualified expert. Last reviewed June 2026.
Key assumptions
  • Includes all acquisition costs
  • Customers counted in the same period as spend

Free & no sign-up · runs entirely in your browser. Results are estimates for general information, not professional advice — verify important decisions with a qualified expert. Last reviewed June 2026.

How it works

CAC = total sales & marketing spend ÷ new customers acquired in the same period.

Frequently asked questions

Why does CAC matter?+

Compared with lifetime value (LTV), it tells you whether your growth is profitable. Aim for LTV:CAC of 3:1 or better.

Continue your journey

Where people usually head next.

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Estimate a startup's valuation using a revenue multiple.
🔥
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Calculate gross and net burn and your runway in months.
🛫
Runway Calculator
See how many months of runway your cash gives you.
💎
LTV Calculator
Calculate customer lifetime value from ARPU, margin and lifespan.

Complete guide

Quick answers

Short, sourced answers to the questions people (and AI assistants) ask most.

What is CAC?
A CAC (Customer Acquisition Cost) calculator shows how much you spend, on average, to win one new customer — the core efficiency metric for marketing and sales.
Why does CAC matter?
It only makes sense next to lifetime value; together they show if growth is profitable.
How is CAC calculated?
It divides everything you spent on sales and marketing in a period by the number of new customers gained in that period. Formula: CAC = total sales & marketing spend ÷ new customers acquired.
What is a good cac?
Aim for LTV:CAC of at least 3:1
What are common cac mistakes?
Counting only ad spend \u2014 include salaries, tools and content.
When should you use the CAC Calculator?
Use it to judge marketing efficiency, set acquisition budgets, or compare channels.

What is the CAC Calculator?

A CAC (Customer Acquisition Cost) calculator shows how much you spend, on average, to win one new customer — the core efficiency metric for marketing and sales.

How the CAC Calculator works

It divides everything you spent on sales and marketing in a period by the number of new customers gained in that period.

CAC = total sales & marketing spend ÷ new customers acquired
  • spend — All sales + marketing cost in the period
  • new customers — Customers gained in the same period
  1. Enter your customer acquisition cost (cac) — the average amount spent on sales and marketing to win one new customer.
  2. Enter your ad spend — the total money put into paid advertising over a period.
  3. Enter your lifetime value (ltv) — the total profit you expect from a customer over the whole relationship.
  4. Read the result, then change any input to compare scenarios instantly — the CAC Calculator recalculates as you type.

Understanding the inputs

What each value means, why it matters, and a typical range — so you can fill in the calculator with confidence.

Customer Acquisition Cost (CAC)

The average amount spent on sales and marketing to win one new customer.

Why it matters:
It only makes sense next to lifetime value; together they show if growth is profitable.
Typical range:
A healthy LTV:CAC ratio is around 3 to 1.
How it affects results:
  • Higher: More expensive growth that can erode profit.
  • Lower: More efficient growth.

Common mistake: Counting only ad spend and ignoring salaries, tools and content.

Ad Spend

The total money put into paid advertising over a period.

Why it matters:
With revenue and margin it tells you whether advertising is actually profitable.
Typical range:
Set by budget and target return on ad spend.
How it affects results:
  • Higher: More reach but more money at risk if campaigns underperform.
  • Lower: Less reach but lower risk.

Common mistake: Judging ad spend without tracking the revenue and margin it produces.

Lifetime Value (LTV)

The total profit you expect from a customer over the whole relationship.

Why it matters:
It sets how much you can afford to spend to acquire and keep a customer.
Typical range:
Aim for LTV at least 3x your CAC.
How it affects results:
  • Higher: More room to invest in growth.
  • Lower: Less room to spend on acquisition.

Common mistake: Using revenue instead of gross profit, which overstates LTV.

Component definitions

The parts that drive this result and what each one contributes.

  • Sales & marketing spend — Everything spent to acquire customers.
  • New customers — Customers gained in the period.

Benchmark reference

What counts as poor, average or excellent for this metric.

Customer Acquisition Cost

AverageEvaluate vs LTV

Source: Standard unit-economics guidance · Updated June 2026

Typical values

Customer Acquisition Cost:
Aim for LTV:CAC of at least 3:1

Common interpretation errors

  • Judging CAC without LTV beside it
  • Counting only ad spend, not salaries and tools

What impacts results most

  1. 1.
    Sales & marketing spend (High impact)More spend per customer raises CAC.
  2. 2.
    New customers (High impact)More customers for the same spend lowers CAC.

Key assumptions

  • Includes all acquisition costs
  • Customers counted in the same period as spend

What's a typical value?

CAC only makes sense next to lifetime value: a healthy business runs an LTV:CAC around 3:1 and recovers CAC (payback) in under ~12 months for SaaS. A ratio above ~5:1 can mean you're under-investing in growth.

LTV : CAC ratio and the common 3:1 rule of thumb

$3,000$3,0001 : 1Below the 3:1 rule of thumb
$6,000$3,0002 : 1Below the 3:1 rule of thumb
$9,000$3,0003 : 1Healthy (3:1 – 5:1)
$12,000$3,0004 : 1Healthy (3:1 – 5:1)
$15,000$3,0005 : 1Strong — consider spending more to grow

Worked example

Inputs: Sales & marketing spend $500,000; new customers 250 Calculation: CAC = spend ÷ new customers Result: $2,000 per customer What it means: Only meaningful next to LTV — aim for LTV:CAC of at least 3:1.

Key terms

LTV:
Lifetime value \u2014 total gross profit expected from a customer.
Payback:
Months of margin needed to recover the CAC.

Common mistakes to avoid

  • Counting only ad spend \u2014 include salaries, tools and content.
  • Judging CAC without LTV next to it.
  • Mixing 'new' and 'blended' CAC.

Compared to alternatives

CAC vs LTV

CAC is what a customer costs to win; LTV is the profit they bring over time.

CACLTV
MeasuresAcquisition costLifetime gross profit
HealthyRecovered in <12 monthsAt least 3x CAC
LeverChannel efficiencyRetention / ARPU

Bottom line: Neither means much alone - track the LTV:CAC ratio (aim 3:1+).

CAC calculator·LTV calculator

Related concepts

How CAC connects to the concepts around it.

LTV:
The total profit expected from a customer over time.
LTV:CAC:
Lifetime value divided by acquisition cost.
Conversion Rate:
The percentage of visitors who take the desired action.
ROAS:
Revenue earned for every unit spent on advertising.
ROI:
Percentage gain or loss on an investment versus its cost.

Marketing ROI learning path

A sensible order to learn these concepts.

CPCCTRConversion RateROASCACLTV

Reviewed sources & methodology

Methodology: Industry Standard · Last reviewed June 2026.

Keywords: cac, acquisition, marketing, saas.

This is an educational estimate, not financial advice. Rates, rules and figures change — verify the latest with the provider or a qualified advisor before you decide.

Reviewed by the Free Tools Galaxy editorial team · Updated June 2026 · Calculated privately in your browser.

Frequently asked questions

Is the CAC Calculator free to use?+

Yes. Every tool on Free Tools Galaxy is 100% free, runs in your browser and requires no signup.

How accurate is the CAC Calculator?+

CAC Calculator uses the standard cac formula in double-precision arithmetic, so the same inputs always produce the same result and you can verify any figure by hand. It is an educational estimate — real-world outcomes depend on your actual rates, rules and assumptions.

Do you store my inputs?+

No. The CAC Calculator runs entirely in your browser. Nothing is uploaded or saved to a server.

Can I use the CAC Calculator on mobile?+

Yes — the interface is fully responsive and works on phones, tablets and desktops.

What are common mistakes to avoid?+

The most frequent mistake is mixing units. Double-check your inputs use a single, consistent unit before clicking Calculate.

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Calculate your customer acquisition cost.

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