Small business and investing
Evaluate project cash flows, returns, pricing margins and break-even volume from your own assumptions.
ROI Calculator
Compare the total amount returned with the amount invested.
NPV Calculator
Discount annual cash benefits to today and compare them with the initial investment.
IRR Calculator
Find the annual rate that makes a conventional project’s net present value zero.
Payback Period Calculator
Find when annual cash benefits recover an initial investment.
Margin and Markup Calculator
Convert between unit cost, selling price, gross margin and markup.
Break-Even Calculator
Find how many units of one product or service cover fixed and variable costs.
Customer Acquisition Cost Calculator
What it costs to win a customer, blended across all new customers and for paid channels alone, with the months to earn it back.
Customer Lifetime Value Calculator
What a customer is worth over their lifetime, from monthly margin and churn, discounted and undiscounted, with the ratio to acquisition cost.
Churn Rate Calculator
Customer churn for a month, quarter or year, the compounded annual rate, the expected customer lifetime, and gross and net revenue churn.
Burn Rate and Runway Calculator
Gross and net monthly burn, how many months the cash lasts at today’s burn, and when it runs out or breaks even if revenue and costs grow.
Inventory Turnover Calculator
How many times inventory sells through in a period, the days it sits on the shelf, and the cash conversion cycle once collection and payment days are added.
Economic Order Quantity Calculator
The order size that keeps ordering and holding costs lowest, with orders a year, days between them, the annual cost and a reorder point.
Freelance Hourly Rate Calculator
The hourly rate a freelancer needs to reach a target income after unbilled time, business costs, benefits and money set aside for tax.
Gross Profit Calculator
Gross profit, gross margin and markup from a period’s revenue and cost of goods sold, then net profit and the revenue needed to cover overheads.
Contribution Margin Calculator
What each unit sold contributes to fixed costs and profit, the contribution margin ratio, and the units needed to break even or reach a profit target.
Depreciation Calculator
A year-by-year book depreciation schedule by straight line, declining balance, sum of the years’ digits or units of production.
Working Capital Calculator
Working capital and the current ratio from current assets and liabilities, operating working capital, and how many days of revenue it represents.
Current Ratio Calculator
The current, quick and cash ratios from a balance sheet: how many times over short-term liabilities are covered, counting ever more liquid assets.
EBITDA Calculator
Earnings before interest, taxes, depreciation and amortization, built up from net income, with EBIT and both margins. A non-GAAP measure, and labelled as one.
P/E Ratio Calculator
The price-to-earnings ratio from a share price and earnings per share, or EPS worked out from net income, preferred dividends and shares, with the earnings yield and PEG.
ROE Calculator
Return on equity and return on assets from the income statement and balance sheet, with the three-factor DuPont breakdown into margin, asset turnover and leverage.
WACC Calculator
The weighted average cost of capital from the values and costs of equity, debt and preferred stock, with debt taken after tax, and the weight of each source.
CAPM Calculator
The expected return on an investment by the capital asset pricing model, from a risk-free rate, the investment’s beta and the market return or risk premium you choose.
Price Elasticity Calculator
The price elasticity of demand between two prices and quantities by the midpoint method, whether demand is elastic or inelastic, and what the change did to revenue.
Cash Conversion Cycle Calculator
How many days cash is tied up between paying for stock and collecting from customers: days inventory outstanding plus days sales outstanding, less days payables outstanding.
Employee Turnover Calculator
The share of the workforce that left in a period, from separations and headcount at the start and end, split into voluntary and other leavers, with a yearly equivalent.
Debt to Equity Calculator
A company’s debt-to-equity ratio from its balance sheet, with the debt ratio, the equity multiplier and the long-term debt version beside it.
Lot Cost Per Item Calculator
The landed cost of each sellable item in a bulk lot or pallet, the profit at your selling price, and the most you can bid for a target margin.
A business decision can look attractive under one measure and weak under another. ROI compares the gain with the original amount but ignores time; payback shows when cash is recovered but ignores everything after that point; NPV tests a forecast against a required return; and IRR finds the rate at which that same forecast breaks even in present-value terms. Margin, markup and break-even answer a different but connected question: whether the price of one product leaves enough contribution to cover fixed costs. These calculators keep every cost, price, rate and cash-flow estimate visible. They supply no market assumptions, tax treatment or recommendation, and they deliberately restrict project timelines to an initial outlay followed by non-negative annual benefits so a single IRR remains meaningful.