BYTETOOLS

Calculators

Percentage, discount, GST, VAT, EMI, BMI, age, area, binary and scientific calculators plus a universal unit converter — instant and accurate.

Percentage Calculator

Calculate what X% of a number is, what percent one number is of another, and percentage increase or decrease between two values — instantly and free.

Discount Calculator

Work out the final sale price and money saved from any discount percentage, including stacked double discounts like an extra 10% off an already reduced price.

GST Calculator

Add GST to a net amount or extract GST from an inclusive price. Preset 5%, 12%, 18% and 28% slabs plus custom rates, with net, tax and gross shown instantly.

VAT Calculator

Add VAT to a net price or extract VAT from a gross amount. Preset 5%, 10%, 20% and 23% rates plus custom, showing net, VAT and gross values instantly.

EMI Calculator

Calculate your monthly EMI for home, car or personal loans from loan amount, interest rate and tenure — with total interest and a full amortization schedule.

BMI Calculator

Calculate your Body Mass Index from height and weight in metric (cm/kg) or imperial (ft-in/lbs) units and see your WHO category with a color-coded badge.

Age Calculator

Find your exact age in years, months and days from your date of birth, plus totals in weeks, days and hours and a countdown to your next birthday.

Binary Calculator

Do arithmetic and bitwise math on binary, decimal, hex and octal numbers — add, subtract, multiply, divide, AND, OR, XOR and shifts, with results in all bases.

Scientific Calculator

Free online scientific calculator with sin, cos, tan in degrees or radians, log, ln, powers, roots, π, e, parentheses, memory keys and keyboard support.

Unit Converter

Convert between units of length, weight, temperature, area, volume, speed, time and data storage instantly, with a swap button and common conversion tables.

Area Calculator

Calculate the area of a rectangle, triangle, circle, trapezoid or ellipse from simple measurements, with the formula shown and results in m², ft² and more.