Calculators, converters, generators, and more — fast, private, no sign-up. Your data never leaves your browser.
Free financial calculators — compound interest, mortgage, loan, investment, and more.
Health calculators — BMI, calorie, body fat, ideal weight, and more.
Developer utilities — JSON formatter, Base64, UUID, regex tester, and more.
Text utilities — word counter, case converter, diff checker, and more.
Image utilities — resizer, compressor, format converter, and more. All processed in your browser.
CSS generators — color picker, gradient, box shadow, flexbox playground, and more.
SEO tools — meta tag generator, Open Graph preview, robots.txt, schema markup, and more.
Math calculators and unit converters — percentage, unit conversion, date calculator, and more.
Security tools — password generator, hash generator, encryption, and more.
QR code and barcode generators and readers.
Social media tools — character counter, image resizer, thumbnail downloader, and more.
Everyday tools — timer, typing test, dice roller, invoice generator, and more.
Learn every favicon format, size, and dark mode trick you need. Step-by-step guide to generating a complete favicon package for all browsers and devices.
Mar 6, 2026
Learn how pregnancy due dates are calculated using Naegele's Rule, what to expect each trimester, and when your due date might change. Includes weekly milestones.
Mar 4, 2026
Master percentage calculations with step-by-step examples for discounts, growth rates, and ratios. Covers common mistakes, real-life math, and spreadsheet formulas.
Mar 4, 2026
