About Us
keisoku is a free site built around the idea of a collection of free online calculators, letting you run everyday calculations quickly right in your browser.
Site Information
Our Purpose
Our goal is to make the calculations people use in daily life and at work — BMI, sales tax, discounts, loans, age, number of days, unit conversion and more — freely available to everyone, with no installation and no sign-up required. Each tool is independently developed and written based on publicly available formulas and official standards and statistics, with a focus on clarity and ease of use.