Universal Tools Directory
Explore our suite of professional calculators for finance, health, and more.
Technology
Cron Job Scheduler
Build and validate five-field cron expressions. Read a plain-language schedule explanation and preview upcoming runs with the visual crontab builder.
Bandwidth Calculator
Estimate file transfer time from file size and connection speed. Convert bandwidth units, including Mbps and bytes, to compare download scenarios.
Binary Converter
Convert text and numbers between binary, decimal, and hexadecimal modes. Explore binary-to-text conversion and supported number-base conversions.
IP Subnet Calculator
Calculate network addresses and host ranges from an IP address and CIDR prefix. View IPv4 subnet masks, wildcard masks, and supported IPv6 ranges.
Password Generator
Generate random passwords in your browser with your chosen length, letters, numbers, and symbols. Create a fresh set and copy the password you choose.
QR Code Generator
Create a custom QR code with your logo and colors, then download PNG or SVG. Generate codes for links, text, Wi-Fi, email, or SMS without an account.
Barcode Generator
Create barcode labels for products and inventory. Choose a supported format, customize label fields, and download or print your barcode artwork.