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LTV:CAC Ratio

A healthy SaaS target is 3:1+. Free online LTV:CAC Ratio. Calculate ltv:cac ratio online — fast, accurate, mobile-friendly, no signup needed.

Ratio
6.75

Derivation

  1. ├── 01Givenltv = 675, cac = 100
  2. ├── 02Formulae.ltv / e.cac
  3. ├── 03Substitutee.675 / e.100
  4. └── 04Compute Ratio6.75
Did you know?

Ratios appear in the earliest Greek mathematics (Eudoxus, 4th century BCE) as a way to compare incommensurable lengths without a concept of irrational numbers.

§01What is

Understanding the LTV:CAC Ratio

The LTV:CAC Ratio computes Ratio from 2 inputs: ltv ($), cac ($). A healthy SaaS target is 3:1+.

Quick calculators for the math that shouldn’t need a notepad — instant, accurate, private to your browser. The LTV:CAC Ratio sits in that toolkit — it A healthy SaaS target is 3:1+. Enter your numbers above and the result updates instantly; every step of the math is shown in the Derivation panel so you can see exactly how the answer was reached.

§02The Formula

How it’s calculated

e.ltv / e.cac

Where

ltv
LTV ($)
cac
CAC ($)
§03Practical Example

Step-by-step walkthrough

Scenario

Apply the formula to a realistic set of inputs: LTV ($) = 675, CAC ($) = 100.

  1. 01Start by noting the input — LTV ($): 675.
  2. 02Start by noting the input — CAC ($): 100.
  3. 03Substitute these values into the formula: e.ltv / e.cac
  4. 04Compute Ratio: the calculator returns 6.75.
  5. 05Cross-check the answer by opening the Derivation panel above — every line of math is shown so you can follow the computation end-to-end.
§04Variants

Common LTV:CAC Ratio Problems

The formula gets rearranged depending on which variable you need. Here are the patterns you’ll run into in the real world — find the one that matches your problem and follow the worked steps.

01 · PATTERN

LTV ($) halved

ltv = 337.5 (from 675)

Keep every other input at its default and halve the ltv ($). See how ratio responds.

  1. 01New LTV ($): 337.5
  2. 02Baseline Ratio: 6.75
  3. 03New Ratio: 3.375
  4. 04Ratio decreases by 50% → use this sensitivity to plan for real-world variation.
02 · PATTERN

LTV ($) doubled

ltv = 1350 (from 675)

Keep every other input at its default and double the ltv ($). See how ratio responds.

  1. 01New LTV ($): 1350
  2. 02Baseline Ratio: 6.75
  3. 03New Ratio: 13.5
  4. 04Ratio increases by 100% → use this sensitivity to plan for real-world variation.
03 · PATTERN

CAC ($) halved

cac = 50 (from 100)

Keep every other input at its default and halve the cac ($). See how ratio responds.

  1. 01New CAC ($): 50
  2. 02Baseline Ratio: 6.75
  3. 03New Ratio: 13.5
  4. 04Ratio increases by 100% → use this sensitivity to plan for real-world variation.
04 · PATTERN

CAC ($) doubled

cac = 200 (from 100)

Keep every other input at its default and double the cac ($). See how ratio responds.

  1. 01New CAC ($): 200
  2. 02Baseline Ratio: 6.75
  3. 03New Ratio: 3.375
  4. 04Ratio decreases by 50% → use this sensitivity to plan for real-world variation.
§05FAQ

Frequently asked questions

Yes. The calculator implements the standard formula as documented and returns exact floating-point results. No approximations are used unless noted in the formula.
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