Finance calculators

Loans, investing, and the math behind everyday money decisions.

Run the numbers on mortgages, loans, credit cards, investments, and retirement — with transparent formulas and editable assumptions.

Calculators

314

Topics: All Mortgage (23) Loans (11) Investing (65) Retirement (8) Budgeting (27)

Finance

Stamp Duty Land Tax UK SDLT Calculator

Calculates UK Stamp Duty Land Tax (SDLT) for residential property purchases using the standard progressive band rates: 0...

basic

23,386 4.0 1 min

Finance

Continuous Compounding Interest Calculator

Calculates future value FV = PV·e^(rt) under continuous compounding and compares to annual compound growth. Also derives...

basic

16,936 4.3 1 min

Finance / Investing

WACC from Equity, Debt, and Tax Rate Calculator

Calculates WACC = (E/V)·r_e + (D/V)·r_d·(1−T), where E is equity value, D is debt value, V = E+D, r_e is cost of equity,...

basic

16,146 3.8 1 min

Finance / Loans

Debt Payoff Calculator

Compute how many months it will take to pay off a balance at a given monthly payment and interest rate.

basic

9,294 4.1 1 min

Finance

Days Sales Outstanding (DSO) Calculator

Calculates Days Sales Outstanding (DSO) to measure the average number of days it takes to collect payment after a sale.

basic

5,471 4.4 1 min

Finance

Macaulay Bond Duration Calculator

Calculates the Macaulay Duration and Modified Duration of a bond from coupon rate, yield to maturity, face value, and ye...

basic

5,405 4.7 1 min

Finance / Investing

Bond Convexity from Duration and YTM Calculator

Estimates bond convexity and the percentage price change from a yield shift ΔP/P ≈ −D_mod·Δy + ½·Convexity·(Δy)². Convex...

basic

2,832 4.7 1 min

Finance

Free Cash Flow to Equity (FCFE) Calculator

Calculates Free Cash Flow to Equity (FCFE) from net income, depreciation, capital expenditure, working capital changes,...

basic

395 4.4 1 min

Finance

Debt Service Coverage Ratio (DSCR) Calculator

Calculates DSCR from net operating income (NOI) and annual debt service (P&I) to assess whether a property or business c...

basic

16,790 4.3 1 min

Finance

Sum of Years Digits Asset Depreciation Calculator

Calculates depreciation expense for a specific year using the Sum of Years Digits (SYD) accelerated depreciation method....

basic

15,795 4.2 1 min

Finance / Investing

Sharpe Ratio Portfolio Performance Calculator

Calculates the Sharpe Ratio of a portfolio from its return, the risk-free rate, and its standard deviation to measure ri...

basic

12,335 4.4 1 min

Finance / Investing

IRR Approximation from NPV at Two Discount Rates Calculator

Approximates IRR using linear interpolation: IRR ≈ r₁ + NPV₁ / (NPV₁ − NPV₂) × (r₂ − r₁), given NPV at two discount rate...

basic

6,169 4.6 1 min

Finance

Inventory Turnover & Days on Hand Calculator

Calculates inventory turnover ratio and days on hand from cost of goods sold and average inventory to assess operational...

basic

5,589 5.0 1 min

Finance / Investing

Gordon Constant-Growth Model Terminal Equity Value Calculator

Calculates stock intrinsic value P = D₁/(k−g) where D₁ is the next dividend, k is required return (CAPM or assumed), and...

basic

3,354 4.4 1 min

Finance / Investing

Two-Asset Portfolio Expected Return and Variance Calculator

Calculates portfolio return E[R_p] = w₁R₁ + w₂R₂ and variance σ²_p = w₁²σ₁² + w₂²σ₂² + 2w₁w₂ρσ₁σ₂ for two assets with gi...

basic

2,892 3.9 1 min

Finance / Mortgage

Mortgage Affordability Calculator

Estimate the largest mortgage and house price you can afford from gross income, monthly debts, down payment, and a targe...

basic

1,474 4.1 1 min

Finance

Operating Cash Flow to Liabilities Calculator

Calculates the operating cash flow ratio as a measure of short-term liquidity from operating cash flow and current liabi...

basic

22,493 4.9 1 min

Finance / Investing

Simple Return on Investment Multiple Calculator

Calculates simple ROI percentage, profit/loss, and the investment multiple (MOIC) from total cost and total gain. Useful...

basic

14,365 4.3 1 min

Finance

Economic Order Quantity (EOQ) from Demand and Costs Calculator

Calculates EOQ = √(2DS/H), where D is annual demand, S is ordering cost per order, and H is annual holding cost per unit...

basic

11,775 4.8 1 min

Finance

Value at Risk (Parametric) Calculator

Calculates the parametric Value at Risk (VaR) for a portfolio from portfolio value, volatility, confidence level, and ho...

basic

8,083 4.0 1 min

Finance / Investing

Profitability Index (Benefit-Cost Ratio) Calculator

Calculates the Profitability Index (PI) or Benefit-Cost Ratio from initial investment and present value of future cash f...

basic

6,605 5.0 1 min

Finance / Investing

CAPM Required Return on Equity Calculator

Calculates the required return using CAPM: r = Rf + β(Rm − Rf). Identifies the equity risk premium, the systematic risk...

basic

5,840 4.7 1 min

Finance / Investing

529 College Savings Calculator

Project the future value of a 529 college savings plan from current balance, monthly contributions, expected return, and...

basic

3,222 4.0 1 min

Finance / Investing

Average Accounting Rate of Return (ARR) Calculator

Calculates ARR = average annual accounting profit / average book value of investment. Simple payback-related metric used...

basic

1,723 4.7 1 min

Showing 265 to 288 of 314 results

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Finance calculators

Stamp Duty Land Tax UK SDLT Calculator

Continuous Compounding Interest Calculator

WACC from Equity, Debt, and Tax Rate Calculator

Debt Payoff Calculator

Days Sales Outstanding (DSO) Calculator

Macaulay Bond Duration Calculator

Bond Convexity from Duration and YTM Calculator

Free Cash Flow to Equity (FCFE) Calculator

Debt Service Coverage Ratio (DSCR) Calculator

Sum of Years Digits Asset Depreciation Calculator

Sharpe Ratio Portfolio Performance Calculator

IRR Approximation from NPV at Two Discount Rates Calculator

Inventory Turnover & Days on Hand Calculator

Gordon Constant-Growth Model Terminal Equity Value Calculator

Two-Asset Portfolio Expected Return and Variance Calculator

Mortgage Affordability Calculator

Operating Cash Flow to Liabilities Calculator

Simple Return on Investment Multiple Calculator

Economic Order Quantity (EOQ) from Demand and Costs Calculator

Value at Risk (Parametric) Calculator

Profitability Index (Benefit-Cost Ratio) Calculator

CAPM Required Return on Equity Calculator

529 College Savings Calculator

Average Accounting Rate of Return (ARR) Calculator