Math and Finance

Fast online calculators and converters for math, finance, and everyday numbers.

10 free tools

Calculate Heat Index, WBGT, and Thermal Work Limit (TWL) to assess heat stress and safety limits for daily life, sports, and industrial work.

Free online percentage calculator to instantly calculate percentage increases, decreases, discounts, ratios, margins, and growth values.

Free online scientific calculator with trigonometric functions, logarithms, exponents, powers, and advanced mathematical calculations.

Free online calculator for fast, accurate, and secure arithmetic calculations including addition, subtraction, multiplication, and division.

Calculate date differences or add and subtract days, weeks, months, and years instantly.

Convert large numbers into K, M, B, T, Lakh, and Crore formats instantly — including the Indian numbering system.

Calculate monthly EMI, total payment, and total interest for any loan. View a full amortization schedule broken down month by month.

Find an exact age in years, months and days from a date of birth, plus total days lived and the countdown to the next birthday.

Calculate body mass index from height and weight in metric or imperial units, see your category and the healthy weight range for your height.

Convert length, weight, temperature, volume, area, speed, time and data units instantly, with every conversion for your value in one table.