Financial Calculators
Pure math financial calculations. No external data, no market rates — just deterministic formulas.
Compound Interest Calculator
A = P(1 + r/n)^nt — calculate investment growth over time
Mortgage Calculator
M = P[r(1+r)^n]/[(1+r)^n-1] — monthly payment calculator
Hourly to Annual Salary
Convert hourly wage × 2,080 hours
Tip Calculator
Calculate tip amount and split between people
Savings Calculator
Monthly deposits with compound interest
Inflation Calculator
Future purchasing power: FV = PV × (1 + rate)^years