---
title: "LTV to CAC Ratio Calculator - Free calculator | FirstSales"
description: "The LTV:CAC Ratio Calculator calculates the critical ratio of customer lifetime value to acquisition cost. Benchmark against the 3:1 ideal for sustain"
canonical: "https://firstsales.io/tools/ltv-cac-ratio-calculator/"
---

100% Free • No SignupSales Calculatorscalculator

# LTV to CAC Ratio Calculator

Calculate your LTV:CAC ratio and benchmark against the ideal 3:1 threshold for sustainable growth. Works instantly without signup.

Instant Results

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LTV to CAC Ratio Calculator

Calculate LTV:CAC Ratio

Average Revenue Per User (ARPU)

$

Monthly revenue per customer

Customer Acquisition Cost (CAC)

$

Sales + marketing per customer

Gross Margin (%)

%

Typically 80%+ for SaaS

Monthly Churn Rate (%)

%

Used to calculate customer lifetime

📊 Key Formulas

LTV = ARPU × Gross Margin % × Customer Lifetime

LTV:CAC Ratio = LTV ÷ CAC

Payback Period = CAC ÷ (ARPU × Gross Margin %)

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## Key Features

Ratio calculation

Payback period

Unit economics

Benchmarking

Improvement scenarios

## Use Cases

1

Unit economics analysis

2

Investor reporting

3

Growth planning

4

Budget optimization

Tool Info

Typecalculator

Free

Yes

Signup

Not Required

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## About LTV to CAC Ratio Calculator

The LTV:CAC Ratio Calculator calculates the critical ratio of customer lifetime value to acquisition cost. Benchmark against the 3:1 ideal for sustainable growth.

## Automate Your Sales Calculators

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## FAQs

Your questions answered

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### General

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