Free Online Calculators

Calculate exact age from birth date

Find the difference between two dates

Add or subtract time durations easily

Calculate percentages, changes, and ratios instantly

Calculate final price after single or double discounts

Calculate Body Mass Index from height and weight

Estimate due date and track pregnancy milestones

Calculate daily calorie needs based on activity level

Calculate speed, distance, or time from any two values

Calculate electricity costs and power consumption for your devices and appliances.

Calculate simple and compound interest over time

Calculate monthly payments and total interest for loans

Estimate monthly mortgage payments with taxes and insurance

Add or remove VAT from any amount instantly

Calculate file transfer time and required speed

Convert between length, weight, temperature, and more