Compound Interest

Growth with recurring contributions and compounding frequency.

CAGR

Convert between annualized rate and final amount.

Mortgage Payment

Monthly payment and amortization overview.

Loan Compare

Compare annuity and equal principal repayment.

DCA

Periodic investing with expected annual return.

ROI + Annualized

Calculate total ROI and annualized return.

Break-even

Break-even quantity and revenue.

Inflation-adjusted Return

Nominal return vs purchasing-power return.

Fee Drag

Impact of ongoing fees on final value.

After-tax Return

Flat tax model for after-tax projection.

FX Converter

Manual rate-based currency conversion.

Savings Goal

Required periodic contribution to hit target value.

Standard Calculator

Safe arithmetic expression calculator.

Percentage Change

Change percentage or derive value from percentage.

Discount / Markup

Apply discount or markup to base price.

VAT / GST

Add or remove indirect tax from amount.

Date Interval

Count days and weeks between two dates.

Business Day Count

Count weekdays between two dates.

Unit Converter

Length / Weight / Temperature conversion.

Tip & Split

Calculate tip, total bill, and per-person share.

NPV

Discounted cashflow valuation.

IRR

IRR solved via Newton + bisection fallback.

XIRR

IRR with irregular dated cashflows.

Payback Period

Time to recover initial outlay from cashflows.

Bond YTM

Yield to maturity for fixed coupon bond.

Duration & Convexity

Bond sensitivity metrics under yield assumptions.

Margin Liquidation

Estimate liquidation price under leverage.

Position Sizing + Kelly

Risk-based position size and Kelly fraction.