Math and Finance Tools

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

Date Calculator

Calculate date differences or add and subtract days, weeks, months, and years instantly.
Millions, Billions & Trillion Converter

Convert large numbers into K, M, B, and T formats instantly or convert abbreviations back to raw numbers.
Percentage Calculator

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

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

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