Free Online Calculators
Fast, accurate, privacy-friendly calculators. Every result is computed instantly in your browser — no login, no tracking scripts.
Finance
Compound Interest
Project savings growth with monthly contributions.
APY Calculator
Real annual yield from a nominal rate.
Savings Goal
Monthly deposit needed to hit a target.
Simple Interest
Interest = principal × rate × time.
Salary ↔ Hourly
Convert annual salary and hourly wage.
Tip Calculator
Split a bill, compute tip and per-person.
Percentage
P% of X, markups, and discounts.
Converters
Kg to Lbs
Kilograms ↔ pounds, both directions.
Cm to Inches
Centimeters ↔ inches.
Celsius ↔ Fahrenheit
Temperature in either direction.
Km to Miles
Distance in either direction.