LTV to CAC Ratio Calculator

Compare contribution-based customer value with acquisition cost and payback time.

Estimated LTV:CAC ratio
10 ×
Contribution LTV $3,000.00
CAC payback 3.33 months
Monthly contribution $90.00
Inputs
Amounts are treated in the selected currency; no foreign-exchange conversion is applied.
currency / customer / month
Average recurring revenue per customer per month.
%
Gross margin percentage after service delivery costs.
% / month
Monthly customer churn percentage; simplified steady-state model.
currency / customer
Fully loaded acquisition cost per customer.
Results & Graph
Estimated LTV:CAC ratio
10 ×
Contribution LTV
$3,000.00
CAC payback
3.33 months
Monthly contribution
$90.00

Estimated LTV:CAC ratio

Graph 1 • Monthly A R P U Sensitivity Recalculates the domain equation across 50% to 150% of the primary input while holding other parameters constant.
0 × 8.1 × 16.2 × 50%: 5 × 5 50% 75%: 7.5 × 7.5 75% 100%: 10 × 10 100% 125%: 12.5 × 12.5 125% 150%: 15 × 15 150%
Graph 2 • Primary & Supporting Metric Comparison Compares the primary output alongside supporting domain benchmarks.
Estimated LTV:CAC ratio 10 × Contribution LTV $3,000.00 CAC payback 3.33 months Monthly contribution $90.00
Graph 3 • Exact Output Table & Units Displays each calculated output in its exact domain unit.
Estimated LTV:CAC ratio10 ×Contribution LTV$3,000.00CAC payback3.33 monthsMonthly contribution$90.00
Summary: At the entered monthly churn and gross margin, contribution-based LTV estimates to $3,000.00.
Summary: At the entered monthly churn and gross margin, contribution-based LTV estimates to $3,000.00.
⚠️ Steady-state approximation; actual customer lifetime and margins vary by cohort.

Formula & Mathematical Methodology: LTV to CAC Ratio Calculator

LTV ≈ monthly ARPU × gross margin ÷ monthly customer churn
payback = CAC ÷ monthly contribution.
LTV ≈ monthly ARPU × gross margin ÷ monthly customer churn; payback = CAC ÷ monthly contribution.
  • monthlyARPU: User-entered monthly a r p u (currency / customer / month).
  • grossMargin: User-entered gross margin (%).
  • churn: User-entered churn (% / month).
  • cac: User-entered cac (currency / customer).

Rounding: Calculations retain full precision; displayed values are rounded for readability.

Worked Example: Example: LTV:CAC

Compare contribution-based customer value with acquisition cost and payback time.

  1. Enter values for the period and unit shown.
  2. Use current, measured inputs wherever available.
  3. Review the result, chart, assumptions, and limitations together.
Result: LTV ≈ monthly ARPU × gross margin ÷ monthly customer churn; payback = CAC ÷ monthly contribution.

Frequently Asked Questions

How accurate is this result?

It is only as accurate as the values and assumptions entered. Check the included formula and limitations against your situation.

Does the currency selector convert exchange rates?

No. It changes the displayed denomination only; it does not convert between currencies.

Business & Marketing • SaaS Metrics Guide

How to Use the LTV to CAC Ratio Calculator: Practical Guide & Visual Analysis

Estimate customer lifetime value, acquisition payback, and LTV to CAC ratio from ARPU, gross margin, churn, and acquisition cost. Enter your own assumptions and review the formulas, example, and limitations before using the result. Whether you are researching ltv to cac ratio calculator calculator, ltv to cac ratio calculator, ltv cac ratio, this interactive tool helps you estimate customer lifetime value, acquisition payback, and LTV to CAC ratio from ARPU, gross margin, churn, and acquisition cost.

Interpreting the 3 Custom Visual Graphs & Key Outputs

As you adjust Display Currency, Monthly A R P U, Gross Margin, Churn, the calculator immediately computes Calculated estimate, Supporting metrics, Calculator-specific visual comparison and updates all three domain-specific SVG charts in real time. Instead of relying on a single static figure, you can inspect the primary domain diagram, component breakdown, and multi-point trajectory curve to see how changing your inputs shifts the final result. Use the Compare (up to 3 scenarios) button to evaluate side-by-side variations before making a decision.

Real-World Benchmark & Planning Tips (General planning estimate; rates and rules are user-entered.)

In our benchmark scenario (Example: LTV:CAC), LTV ≈ monthly ARPU × gross margin ÷ monthly customer churn; payback = CAC ÷ monthly contribution. Keep in mind that inputs are treated as estimates for the selected period. For related calculations in Business & Marketing, explore Percentage Calculator, Business Break-Even Calculator.