Free Calculators for Marketing, Business & Investing

Use revenue, ad spend, gross margin, and campaign days to calculate ROAS, break-even ROAS (1 ÷ the entered gross margin), daily averages, and revenue minus ad spend. Revenue minus ad spend is not full net profit. The break-even reference excludes costs not reflected in the entered margin, so treat it as an estimate—not a scale recommendation.

Enter hourly rate, hours, platform-fee percentage, and withholding percentage to estimate gross invoice value, deductions, and the remaining amount. The withholding is only the rate you enter; this tool does not prepare an invoice or determine your actual tax liability.

This two-proportion Z-test compares the entered conversion counts and rates. Its confidence score and sample-size flag are estimates under simplified assumptions; they do not account for experiment design, repeated checking, or audience differences. A conventional confidence threshold is not proof that a variant will perform better in the future.

Enter principal, annual rate, compounding frequency, time, and an optional monthly contribution to estimate future value and separate contributions from modeled growth. The calculation assumes the rate remains constant and contributions continue as entered; actual returns can differ.

Enter monthly contribution, expected annual return, and term to estimate maturity value, total contributions, and modeled growth. The formula assumes a constant return and contributions at the beginning of each month; market returns vary, so treat the output as an illustration.

The calculator annualizes monthly income and estimates annual tax, effective rate, average monthly deduction, and take-home amount for the selected category. It uses hard-coded bands and rates rather than a jurisdiction- or tax-year-aware table; changing the site-wide currency display does not convert the thresholds. Check current official rules before relying on the estimate.

Enter a target, time horizon, current savings, and expected return to estimate the monthly deposit, total modeled contributions, and modeled interest. The result assumes a steady return and is a planning illustration, not a guaranteed outcome.

Projects monthly expenses at retirement using the entered inflation rate, estimates a corpus for the chosen retirement period and return assumption, and estimates a monthly saving amount before retirement. It uses simplified constant-rate assumptions; actual inflation, investment returns, and spending may differ.

The calculator uses only the entered cost and selling prices to calculate the difference, margin, and markup. It does not model overhead, taxes, shipping, returns, or break-even volume unless those costs are included in the entered cost. A 50% markup on cost equals a 33.3% margin on price.

Enter desired monthly income, business expenses, billable hours, tax rate, paid vacation days, and a margin target to estimate an hourly rate, daily rate, and revenue target. The result uses the calculator’s built-in workday assumptions and does not account for every possible cost or tax rule.

Enter marketing spend, new customers, monthly revenue per customer, average lifespan, and monthly operating cost per customer to estimate CAC, LTV, LTV:CAC, ROI, payback, gross margin, and related metrics. LTV is calculated as monthly net revenue multiplied by the entered lifespan; the churn field is not used. Benchmarks are context-dependent, and this simplified result is not a forecast.

Enter selling price, product cost, shipping, platform-fee percentage, payment-fee percentage, and ad spend per unit. The calculator returns modeled per-unit profit, margin, markup, costs, and a positive/negative profitability status; it does not calculate break-even unit volume. Unentered costs—such as returns, fixed transaction charges, tax, or overhead—are excluded.