Utility Calculators
Date, time, age, GPA, networking, conversion, and more. — 4 free tools, all running locally in your browser.
Most Popular
Age Calculator
Calculate exact age in years, months, weeks, and days globally utilizing strict localization formatting.
Conversion Calculator
Quickly convert between metric and imperial units. Use our free conversion calculator for length, weight, temperature, volume, and more.
IP Subnet Calculator
Calculate IPv4 subnetting parameters, CIDR ranges, network/broadcast addresses, wildcard masks, usable host bounds, binary bitmasks, special ranges, and VLSM plans.
Subnet Calculator
Calculate IPv4 subnets, network addresses, broadcast addresses, and usable host ranges based on IP address and CIDR block.
All Utility Calculators (4)
Utility Calculators
Everyday calculations made simple. Our utility tools cover date and time, education, networking, and unit conversions.
Date & Time
Calculate your exact age with the Age Calculator, find the difference between dates, convert time zones, and track work hours with precision.
Education
The GPA Calculator supports weighted and unweighted scales for high school and college. The Grade Calculator helps you determine what you need on your final exam.
Networking & Security
The Subnet Calculator handles IPv4 CIDR notation for network engineers. The Password Generator creates cryptographically strong passwords with customizable rules.
Conversions
Convert between units of measurement, currencies, and number systems. Our Conversion Calculator supports hundreds of unit pairs across length, weight, volume, and temperature.