About DatesCalculator.com

DatesCalculator.com is a free date-math calculator site. Every tool runs in your browser, there's no account, no sign-up, and your dates never get sent anywhere.

DatesCalculator.com is veteran-owned and operated. That background is also why the site includes a Military Service Calculator, built for the kind of date math that matters most during a military career and the transition out of one.

Why this site exists

Most date calculators online are either bolted onto a much bigger, unrelated business (a scheduling app, a legal software company, a news publisher) or built thin, with just enough functionality to rank for a search term. This site is neither. It's built and maintained by one person, with the actual edge cases, leap years, business-day exclusions, month-length differences, handled correctly rather than glossed over.

How the tools work

Every calculator on this site runs entirely client-side, in JavaScript, right in your browser. Nothing you type into a calculator gets sent to a server. Formulas and conventions (like how business days are counted, or how federal holidays are determined) are checked against real, current sources before publishing, see the site's contact page if you spot something that looks wrong.

Cedrick Reese

Ready Utilities was founded by Cedrick Reese, a retired veteran and web developer who enjoys building free, user-friendly online tools that simplify everyday tasks. His journey began in the early 2000s with affiliate marketing and niche site development, which grew into a passion for creating practical digital utilities and calculators. After retiring, he earned a Computer Systems Technician certificate from UEI College, completed Electro-Mechanical Technologies at Tulsa Welding School, and finished the Carpentry program at Florida State College at Jacksonville. Today, he combines his technical background and craftsmanship by building furniture using traditional woodworking methods, gardening, and developing helpful online tools for users worldwide.