Founders & operators
Get a fast read on unit economics or channel efficiency without waiting on a spreadsheet rebuild.
Check whether acquisition economics are healthy.
6.40x
The LTV:CAC ratio compares customer lifetime value to acquisition cost. It answers a simple question: for every dollar spent to win a customer, how many dollars of lifetime value do you earn back?
Separates efficient growth from spend that does not pay back.
Shows when to scale channels vs fix retention or pricing first.
A standard efficiency snapshot alongside payback and NRR.
Highlights which acquisition motions deserve more capital.
A falling ratio often appears before cash-flow stress.
LTV:CAC = Customer lifetime value ÷ Customer acquisition cost
Divide margin-based LTV by fully loaded CAC for the same customer definition and comparable time horizons.
Revenue LTV vs margin LTV changes the ratio dramatically.
Omitting sales salaries understates true acquisition cost.
Mismatching periods between LTV and CAC skews results.
Strong NRR lifts LTV and improves the ratio over time.
Blended ratios hide inefficient paid programs.
A high ratio with slow payback can still strain runway.
Read both together — ratio for profitability, payback for cash timing.
The LTV:CAC calculator divides lifetime value by acquisition cost so you can check whether your growth engine is economically healthy.
See if you are near, above, or below common efficiency bands.
Model CAC or LTV changes before committing budget.
Run ratios per acquisition motion.
Explain efficiency in one number.
Use alongside payback and NRR for a full picture.
Use gross-margin LTV when possible.
Use fully loaded sales & marketing CAC.
Interpret as a multiple (e.g. 3.2×).
Repeat for each major channel or ICP.
Many SaaS teams treat ~3:1 as a healthy target. Below ~1:1 usually means unprofitable acquisition. Above ~5:1 can mean you are under-investing in growth — unless capacity, brand, or market constraints justify restraint. Always pair with payback months.
Get a fast read on unit economics or channel efficiency without waiting on a spreadsheet rebuild.
Use this calculator to benchmark performance, allocate budget, and brief stakeholders with a clear, shared metric.
Standardize reporting across clients and campaigns, and turn calculations into optimization recommendations.
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