Category hub
Technology Calculators
Browse 6 tools, including IP Subnet Calculator, Password Generator, Time Zone Calculator.
IP Subnet Calculator
Calculate IPv4 network, mask, broadcast and usable-host range, including /31 and /32.
Password Generator
Generate a local cryptographically random password using your selected character groups.
Time Zone Calculator
Convert a civil date/time between IANA zones while detecting daylight-saving gaps and repeated times.
Bandwidth Calculator
Estimate transfer time, distinguishing bits from bytes and decimal from binary storage units.
Base64 Encode / Decode
Encode Unicode text as Base64 or decode strict Base64 to UTF-8 text.
URL Encode / Decode
Encode or decode a URL component using UTF-8 percent encoding.
6 working tools. Each page explains its inputs, formula and assumptions.