Quick Calculators

Percentage, discount, tip, inflation, mortgage — 9 instant everyday math tools. No sign-up, instant results.

Percentage

% of a number, change, proportion

X% × Y ÷ 100

Discount

Final price after discount

price × (1 − d%)

Tip

Gratuity & bill splitter

bill × tip%

Simple Interest

Principal × Rate × Time

P × R × T

Inflation

Purchasing power over time

FV = PV × (1−i)n

Savings Goal

Months to reach your target

monthly iteration

CAGR

Annualized return rate

(end/start)1/y − 1

Rule of 72

Years to double money

72 ÷ rate

Mortgage

Monthly payment estimator

P[r(1+r)n]÷[(1+r)n−1]

Disclaimer: All calculators are for informational purposes only. Results are estimates. Verify important calculations independently.