All calculators
Clear inputs, reliable math, and useful explanations.
Investment & time value
Compound Interest Calculator
Project long-term growth.
Inputs: Principal · contributions · rate · timeRecurring Investment Calculator
Explore regular contributions and payment timing.
Inputs: Initial capital · contribution · rate · schedulePresent Value Calculator
Discount one future amount.
Inputs: Future amount · discount rate · timeFuture Value Calculator
Project one amount forward.
Inputs: Principal · rate · timeCAGR Calculator
Annualize growth.
Inputs: Beginning · ending value · yearsEffective Annual Rate (EAR) Calculator
Compare annual compounding.
Inputs: Nominal rate · compounding frequencyPresent Value of Annuity Calculator
Discount equal payments.
Inputs: Payment · rate · payment countFuture Value of Annuity Calculator
Accumulate equal payments.
Inputs: Payment · rate · payment countCAPM Calculator
Estimate a required return from the risk-free rate, market return, and beta.
Inputs: Risk-free rate · market return · betaPortfolio Risk and Return Calculator
Estimate a two-asset portfolio's expected return and volatility from weights and correlation.
Inputs: Same-period returns and SDs · weights · correlationSharpe Ratio Calculator
Measure excess return per unit of total volatility with the Sharpe ratio.
Inputs: Same-period return · risk-free rate · SDDividend Discount Model Calculator
Estimate share value from dividend growth and required return.
Inputs: Dividend · growth · required returnOption Expiry Payoff Calculator
Compare expiry profit and loss for four option positions.
Inputs: Position · strike · premium · multiplierMortgage and Amortization Calculator
Compare monthly payments, interest and principal repayment.
Inputs: Principal · nominal rate · months · repayment methodMaximum Drawdown Calculator
Explore peak-to-trough loss, recovery and time underwater.
Inputs: Consistent-frequency value series · peaks and recoveryCorporate finance
NPV Calculator
Value future cash flows.
Inputs: Outlay · cash flows · discount rateEquivalent Annual Annuity (EAA) Calculator
Convert a project’s NPV into its equivalent annual annuity.
Inputs: Project NPV · effective annual rate · yearsIRR Calculator
Find the internal rate.
Inputs: Outlay · periodic cash flowsModified Internal Rate of Return (MIRR) Calculator
Model return with two rates.
Inputs: Cash flows · finance · reinvestment ratesPayback Period Calculator
Estimate recovery time.
Inputs: Outlay · annual cash flowsDiscounted Payback Period Calculator
Discount before finding payback.
Inputs: Outlay · cash flows · discount rateProfitability Index Calculator
Compare inflow PV with outlay.
Inputs: Outlay · cash flows · discount rateWACC Calculator
Estimate WACC from market-value financing weights, equity cost, and after-tax debt cost.
Inputs: Market values · capital costs · marginal tax rateDiscounted Cash Flow (DCF) Valuation Calculator
Value forecast FCF and terminal cash flows.
Inputs: Forecast FCF · WACC · terminal growthBreak-Even Calculator
Find break-even sales.
Inputs: Fixed costs · price · unit variable costROE / ROA Calculator
Compare returns on equity and assets.
Inputs: Net income · average assets · equityDuPont Analysis Calculator
Decompose ROE into three drivers.
Inputs: Net income · revenue · average assets/equityXIRR / XNPV Calculator
Evaluate present value and return from dated cash flows.
Inputs: Dates · signed cash flows · annual discount rateBonds & yields
Bond Price Calculator
Price a fixed-coupon bond.
Inputs: Face value · coupon · YTM · maturityBond YTM Calculator
Estimate bond yield.
Inputs: Price · coupon · face value · maturityCurrent Yield Calculator
Compare coupon and price.
Inputs: Face value · coupon · market priceBond Convexity Calculator
Estimate yield curvature.
Inputs: Face value · coupon · YTM · maturityBond Duration Calculator
Compare recovery timing and rate sensitivity.
Inputs: Face · coupon · yield · maturityClean & Dirty Bond Price Calculator
Turn a clean quote into settlement amount.
Inputs: Clean quote · face · coupon · datesCallable Bond Yield Calculator
Compare maturity and call yields.
Inputs: Price · coupon · maturity · callsBond Holding-Period Return Calculator
Combine coupons, price changes and reinvestment gains.
Inputs: Clean/dirty amounts · settlement dates · coupons receivedStatistics & Data Analysis
Mean & Standard Deviation Calculator
Separate mean return from dispersion.
Inputs: Return series (%) · consistent frequencyZ-score Calculator
Locate a return relative to its mean.
Inputs: Observation · mean · standard deviationStatistical Distributions & Critical Values Calculator
Explore normal, t, χ² and F tails and critical values.
Inputs: Distribution · degrees of freedom · value or quantile probabilityMean Confidence Interval Calculator
Estimate a mean interval using Student’s t.
Inputs: Sample or summaries · confidence levelStudent’s t-test Calculator
Compare mean differences, uncertainty and test direction.
Inputs: Samples or summaries · null mean · alternative and αOne-way ANOVA Calculator
Separate between/within variation and the overall test.
Inputs: Independent groups · classical / Welch · αChi-square Test Calculator
Compare observed/expected counts and categorical association.
Inputs: Counts · specified proportions or contingency table · αPearson Correlation Calculator
Inspect linear co-movement in paired returns.
Inputs: Paired X / Y returns (%)Simple Linear Regression Calculator
Fit the relationship between paired returns.
Inputs: Paired market / stock returns (%)Regression Inference & Diagnostics Calculator
Connect OLS coefficients, inference and residuals.
Inputs: Paired X / Y · confidence level · conventional OLSMacroeconomics
PCE Inflation Calculator
Calculate MoM and YoY from comparable PCE indexes.
Inputs: Current index · previous month · year-earlier monthReal Interest Rate & Fisher Calculator
Compare exact inflation-adjusted interest, the Fisher approximation and their percentage-point gap over the same period.
Inputs: Nominal interest (%) · same-period inflation (%)Inflation & Purchasing Power Calculator
Separate the future nominal cost of the same basket from the future purchasing power of a fixed nominal amount.
Inputs: Amount (TWD) · annual inflation (%) · yearsReal GDP Growth Calculator
Calculate growth and the absolute change between two real GDP observations with consistent units and price basis, without annualizing or converting periods.
Inputs: Previous / current real GDP · consistent price basisGDP Deflator Calculator
Derive the price index from nominal and real GDP and optionally compare it with the previous index.
Inputs: Nominal / real GDP · previous index (optional)Exchange Rate Appreciation / Depreciation Calculator
Track explicit USD/TWD quote directions and distinguish quote changes from reciprocal currency-value changes.
Inputs: Two exchange rates · home currency · quote directionCPI Inflation Calculator
Compare two observations of one CPI series, distinguishing month-on-month, year-on-year and custom-period price changes.
Inputs: Two CPI levels · comparison months · same seriesPPI Inflation Calculator
Calculate change within one producer-price series and distinguish producer receipts from consumer prices.
Inputs: Two PPI levels · comparison months · same seriesUnemployment & Labor Force Calculator
Classify people under Taiwan or US survey definitions, then calculate unemployment, labor force participation and employment-population ratios.
Inputs: Employed · unemployed · outside labor force · population scopeGDP Expenditure Calculator
Separate consumption, fixed investment, inventory change, government and net exports; understand domestic production and inventories across years.
Inputs: Consumption · fixed investment · inventories · government · net exportsYield Curve & Term Spread Calculator
Compare maturity nodes with matched date, issuer, currency and yield conventions; calculate 10Y−2Y in percentage points and basis points.
Inputs: 2 / 5 / 10 / 30-year yields · comparable basisReal Exchange Rate & PPP Calculator
Use matched baskets and an explicit quotation to calculate illustrative PPP, relative prices and deviation.
Inputs: Comparable TW / US basket prices · nominal exchange rate · quote direction