Free Online Calculators

A complete set of browser-based calculators for finance, health, maths, and everyday use. No sign-up. No downloads. Instant results.

Finance Calculators

Loan EMI Calculator

Monthly payment & amortization

Compound Interest

Investment growth over time

Simple Interest

Basic interest calculation

Mortgage Calculator

Home loan repayments

Tax Calculator

Income tax estimator

Discount Calculator

Sale price & savings

Tip Calculator

Restaurant tip splitter

Split Bill Calculator

Divide bills fairly

Currency Converter

Live exchange rates

Salary → Hourly

Pay rate converter

Fuel Cost Calculator

Trip fuel expenses

BMI Calculator

Body Mass Index

Calorie Calculator

TDEE & daily calorie needs

Age Calculator

Exact age in years/months/days

Due Date Calculator

Pregnancy due date

Ovulation Calculator

Fertile window estimator

Date Difference

Days between two dates

100% Private

All calculations happen in your browser. No data is sent to any server.

Instant Results

Results update as you type. No submit button, no page reload needed.

Works on Any Device

Fully responsive. Use on phone, tablet, or desktop without installing anything.