Guides and articles to help you use our tools better.
Featured
October 25, 2026 · Directory
Browse every tool on UtilityLab — 220+ free, private, browser-based utilities for finance, health, text, images, and more.
Read more →Featured
October 25, 2026 · Guide
A complete guide to 220+ free online tools for finance, health, text, images, PDFs, AI, construction, and converters. All browser-based, private, and free.
Read more →October 25, 2026 · About
Learn why UtilityLab was built, what we offer, and how we keep our tools free, fast, and private for everyone.
Read more →October 25, 2026 · Finance
Learn the formula behind mortgage payments and how down payment and interest rate affect what you pay each month.
Read more →October 25, 2026 · Health
Understanding body mass index and its limitations. Learn when to trust BMI and when to look at other measures.
Read more →October 25, 2026 · Security
Learn what makes a password strong, common mistakes to avoid, and how to generate secure passwords for free.
Read more →October 27, 2026 · Image Tools
Reduce file size while keeping your images sharp. Learn how lossy and lossless compression work.
Read more →October 25, 2026 · Developer
A simple guide to the most popular data format on the web. Learn what JSON looks like and why it matters.
Read more →October 25, 2026 · Health
Calculate your daily calorie needs based on your body and lifestyle. Includes BMR and TDEE explained.
Read more →October 25, 2026 · Image Tools
Turn scanned documents and screenshots into editable text. Learn how OCR works and how to use it for free.
Read more →October 25, 2026 · Finance
A simple framework for managing your money. Learn how to divide your income into needs, wants, and savings.
Read more →October 25, 2026 · Image Tools
Make your iPhone photos compatible with everything. Learn why iPhones use HEIC and how to convert them.
Read more →October 25, 2026 · Developer
The small detail that affects SEO and user experience. Learn how to create clean slugs for your website.
Read more →October 25, 2026 · Finance
Make smarter borrowing decisions with a few simple numbers. Learn how to compare loans and understand total interest.
Read more →October 25, 2026 · Math
A simple formula for a common calculation. Learn how to calculate percentage increase with real examples.
Read more →October 25, 2026 · Everyday
A simple guide to tipping in the US and beyond. Learn how much to leave in different situations.
Read more →October 25, 2026 · Everyday
Save money and avoid misleading deals. Learn how to calculate discounts and spot fake sales tactics.
Read more →October 25, 2026 · Utility
A simple guide to QR codes for business and personal use. Learn how to create and scan QR codes.
Read more →October 25, 2026 · Converters
Simple formulas for everyday conversions. Learn how to convert between metric and imperial units.
Read more →October 25, 2026 · Security
Random passwords are stronger than anything you can create. Learn why and how to use a generator.
Read more →October 25, 2026 · Text Tools
Why word count matters and how to track it easily. Tips for hitting your target length.
Read more →October 27, 2026 · Construction
Learn how to calculate concrete volume and bags for slabs, footings, and columns. Includes a free concrete calculator.
Read more →October 27, 2026 · AI
Learn what AI sentiment analysis is, how it works, and how to use it for free in your browser.
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