Business & Marketing Calculators

Business calculators give founders, operators, analysts, and investors the quantitative tools to make informed decisions about company health, growth, and value. From the earliest back-of-the-napkin unit economics for a startup idea to the complex discounted cash flow models used in M&A valuations, every business decision ultimately comes down to numbers.

Understanding your business metrics is not optional in today's data-driven environment. Investors, lenders, and strategic partners expect founders and executives to know their customer acquisition cost (CAC), lifetime value (LTV), churn rate, burn rate, and runway down to the decimal. These are not academic concepts — they are the vital signs of a company, and monitoring them continuously is the difference between course-correcting in time and discovering a crisis too late.

This calculator category covers five core domains: startup metrics (burn rate, runway, MRR, ARR), marketing analytics (CAC, ROAS, conversion rates), company valuation (DCF, revenue multiples, comparable companies), profitability analysis (break-even, contribution margin, COGS), and HR finance (salary benchmarking, commission structures, employee cost).

SaaS and subscription businesses have a particularly rich set of metrics. The LTV/CAC ratio is the foundational measure of business model health: a ratio above 3:1 indicates a sustainable customer acquisition engine, while below 1:1 means you are paying more to acquire customers than they will ever generate in revenue. Understanding how to calculate and improve each component is essential for any recurring-revenue business.

Unit economics describes the direct revenues and costs associated with a single unit of business — typically one customer. Healthy unit economics is the prerequisite for scalability: if acquiring one customer costs more than that customer generates over their lifetime, spending more on marketing will accelerate losses, not create value.

Customer Acquisition Cost (CAC) includes all sales and marketing expenses — salaries, ad spend, software, commissions, and overhead — divided by the number of new customers acquired in the same period. Blended CAC mixes paid and organic acquisition; paid CAC isolates only customers from paid channels.

Customer Lifetime Value (LTV) projects the total gross profit a customer generates over their relationship with the company. For SaaS businesses, LTV = ARPU × Gross Margin ÷ Churn Rate, where ARPU is average revenue per user per month.

For early-stage startups, burn rate and runway are existential metrics. Gross burn is total monthly cash outflow; net burn is gross burn minus monthly revenue. A company with $200,000 in monthly expenses and $50,000 in revenue has a gross burn of $200,000 and a net burn of $150,000.

Runway is the number of months until the company runs out of cash: Runway = Cash Balance ÷ Net Monthly Burn. A startup with $1.5 million in the bank and a $150,000 monthly net burn has 10 months of runway. Investors typically expect startups to begin their next fundraising process at least 6 months before running out of money.

Burn multiple — net burn divided by net new ARR added in the same period — measures capital efficiency. A burn multiple below 1.5× is excellent; above 2× suggests the company is burning too much cash relative to the growth it is generating.

Business valuation is both art and science. The most common methods are: (1) Revenue multiples — appropriate for high-growth companies that are not yet profitable; (2) EBITDA multiples — common for profitable SMBs and mature businesses; (3) Discounted Cash Flow (DCF) — values the company based on the present value of projected future cash flows; and (4) Comparable company analysis (comps) — benchmarks the company against similar publicly traded companies.

SaaS companies are typically valued at 5–15× ARR depending on growth rate and profitability. E-commerce businesses trade at 1–3× revenue. Service businesses often trade at 3–6× EBITDA. These multiples contract significantly when interest rates rise, as they did in 2022–2024, because the discount rate used in DCF models increases, reducing present values.

Break-even analysis identifies the sales volume at which total revenue equals total costs — the point where the business stops losing money and starts making it. It requires distinguishing fixed costs (rent, salaries, subscriptions — costs that do not change with volume) from variable costs (COGS, transaction fees — costs that scale with each unit sold).

Contribution margin is the revenue remaining after subtracting variable costs. It represents the revenue that "contributes" to covering fixed costs and, once fixed costs are covered, generates profit. A higher contribution margin means fewer units need to be sold to reach break-even.

Gross margin, contribution margin, operating margin, EBITDA margin, and net profit margin form a hierarchy of profitability metrics, each including more cost categories than the last. Understanding which margin is most relevant depends on the business model and the decision being made.