ix2v Tools is a collection of free, single-purpose calculators and converters. Every tool is a static page with a small piece of plain JavaScript, so the math happens on your device: nothing you type is sent to a server, there is no account to create, and the pages keep working offline once loaded.
The tools cover the small questions that come up over and over - how many gallons of paint a room needs, what a 30-year mortgage payment looks like at a given rate, how much federal tax comes out of a paycheck, how many days are left until a date, how to turn a cup of flour into grams. Each page explains the formula it uses and shows a worked example so you can check the result yourself.
US conventions are used throughout: customary units first, 2025 federal tax brackets, 30-year fixed mortgages, and American date formats. Financial, legal and health results are estimates for informational purposes only and are not professional advice.
Advertising: this site may show ads served by Google AdSense to cover hosting costs. Ads never influence the calculations. A Chinese edition of the site is available at tools.ix2v.top.