Utilities
Free online utilities — BMI calculator, date calculator, color extractor, contrast checker, markdown previewer, and more. This category contains 8 free tools, all running in your browser with no sign-up: BMI & Health Calculator, Date Calculator, Image Color Extractor, Color Contrast Checker, Password Strength Checker, Markdown Previewer, Sentiment Analyzer, World Clock. Each tool page explains what the tool does, how it works, common use cases, and tips for getting the best results, and most include a step-by-step guide as well. If you are not sure where to start, the most popular tool in this category is BMI & Health Calculator. You can also explore the other categories from the full tool directory or return to the homepage for an overview of everything AI Tools offers.