CAC (Customer Acquisition Cost)
Divides total marketing and sales spend by the number of new customers won in the same period, giving the average cost of acquiring one customer.
CAC (R$)
—
Simple CAC: Customer Acquisition Cost
CAC = marketing spend / new customers. Say you put R$ 10,000 into winning 50 new customers; that works out to a CAC of R$ 200. The fully-loaded version folds in sales salaries and tools on top of media. Blended CAC splits the whole spend across every customer, and per-channel CAC pulls each source apart so you can see them one at a time.
Applications and benchmarks
It is a backbone number for unit economics, and it shows up in SaaS pitch decks, board reports and decisions about where the growth budget goes. In Brazil the usual ranges run like this: B2B SaaS SMB R$ 500-2k, mid-market R$ 5-20k, enterprise R$ 50k+, and e-commerce R$ 50-150. A healthy CAC payback stays under 12 months. Stretch past that and your cash is tied up in the customer too long before it ever turns a profit.
FAQ
What is the difference between CAC and CPA? CPA tends to look only at paid media per conversion. CAC casts a wider net, taking in sales, tools and salaries too.
What is the LTV/CAC ratio? People often treat anything above 3 as healthy. Drop below 1 and every customer is costing you more than they bring in.
Should I include organic in CAC? Blended CAC takes in everything, organic included. Channel CAC keeps paid and organic apart so you can judge how efficient each source really is.
Related Tools
Simple Conversion Rate Calculator
Divides conversions by visitors and multiplies by 100, then grades it: under 1 percent is low, 1 to 3 average, 3 to 5 good, 5 or more excellent.
Simple Interest Calculator
Compute simple interest with J = C × i × t. Auto-adjusts time unit (days, months, years).
MEI DAS Tax Calculator (Brazil)
2024 fixed monthly slip by activity in Brazil's microentrepreneur regime: R$72.60 commerce, R$76.60 service, R$77.60 both, plus the R$81,000 cap check.
Peak Shear Stress in a Bonded Lap Joint (Volkersen)
Computes the peak shear stress in the adhesive layer of a single lap joint using the Volkersen model, which treats the adherends as elastic membranes in tension and the adhesive in pure shear: τ_max = τ_avg·(λ/2)·coth(λ/2), with τ_avg = F/(b·L) and λ = L·√(2·G_a/(E·t·t_a)). Because the adherends stretch unevenly along the overlap, the adhesive does not work uniformly: load piles up at both ends while the middle stays almost unloaded, so the peak stress can be several times the average — 3.35 times in the default example. Hence the model most useful and counter-intuitive conclusion: lengthening the overlap pays less and less, because the extra length carries no load; doubling L from 25 to 50 mm halves the AVERAGE stress but cuts the PEAK stress by only 0.25 %, and it is the peak that breaks the joint. The model assumes a balanced joint, with both adherends of the same material and thickness — that is where the 2 inside the root comes from — and since adherend and adhesive thickness enter only as a product, thickening the adherend buys exactly what thickening the glue line does. Far more is gained by thickening the adhesive or choosing a less rigid one, which is what lowers λ. Enter the load, the overlap width and length, the adherend thickness and modulus, and the adhesive thickness and shear modulus.
CAC (Customer Acquisition Cost) Calculator
Compute CAC = (marketing + sales costs) / customers acquired. Compares to LTV to validate business health (LTV/CAC ≥ 3).
LTV:CAC Ratio
Divide customer lifetime value by acquisition cost and read the verdict: below 1 you lose money, 3 or more is healthy, above 5 hints at underinvestment.
The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.