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10 Free Tools · Instant Results
Free Online Technology Calculators
Binary, hex, subnet, network & developer tools
All Categories
10+
Tools
3
Popular
10
New
100%
Free
Most Popular
🌐
Subnet Calculator
IP subnet mask, network/broadcast address, usable hosts and CIDR notation
Popular
📡
Data Transfer Calculator
File download/upload time at any internet speed with unit conversions
Popular
🛡️
Password Strength
Password entropy, strength score, crack time estimate and improvement tips
Popular
🆕
Recently Added
🌐
Subnet Calculator
New
IP subnet mask, network/broadcast address, usable hosts and CIDR notation
0x
Hexadecimal Calculator
New
Hex arithmetic and conversion between hex, decimal, binary and octal
🔤
ASCII / Unicode Converter
New
Convert text to ASCII codes, Unicode code points and UTF-8 bytes
📡
Data Transfer Calculator
New
File download/upload time at any internet speed with unit conversions
📶
Bandwidth Calculator
New
Network bandwidth requirements for concurrent users and usage patterns
🔐
Hash Generator
New
Generate MD5, SHA-1, SHA-256, SHA-512 hashes from any text input
🛡️
Password Strength
New
Password entropy, strength score, crack time estimate and improvement tips
🔌
IP Range Calculator
New
Calculate IP address range from network address and subnet mask
🔢
Number Base Converter
New
Convert between binary, octal, decimal and hexadecimal number systems
🎲
Random String Generator
New
Generate random strings for testing, tokens and security applications