📗 Everything from the textbook, actually usable.
Financial ratios, break-even and depreciation, time value of money, valuation, cost of capital, and the probability/statistics an accountant or financier actually uses.
Liquidity Ratios
Current Ratio, Quick Ratio, and Working Capital.
Profitability Ratios
Gross/Net/Operating Margin, ROA, and ROE.
Leverage Ratios
Debt-to-Equity, Debt Ratio, and Interest Coverage.
Efficiency Ratios
Inventory Turnover, AR Turnover, DSO, and Asset Turnover.
Break-Even Calculator
Contribution margin, break-even units and sales $.
Depreciation Calculator
Straight-line, double-declining balance, or units of production.
Time Value of Money
Present Value, Future Value, and Annuity PV/FV in one tool.
NPV & IRR Calculator
Should you take the project? Net Present Value and Internal Rate of Return.
Payback Period Calculator
Simple and discounted payback period from a cash flow schedule.
Bond Valuation Calculator
What a bond is actually worth, given its coupon and yield to maturity.
WACC Calculator
Weighted Average Cost of Capital — blending equity and debt cost.
CAPM Calculator
Cost of equity from the Capital Asset Pricing Model.
DuPont Analysis
Break ROE into margin, turnover, and leverage — see what's really driving it.
EPS & P/E Calculator
Earnings per share, and the price-to-earnings ratio.
Probability Calculator
P(A and B), P(A or B), and complements.
Expected Value Calculator
The probability-weighted average of a set of outcomes.
Standard Deviation Calculator
Volatility/risk from a data set — sample or population.
Combinations & Permutations
C(n,r) and P(n,r) — order matters or it doesn't.