ITCALCTOOLS.COM
// FREE IT TOOLS & CALCULATORS — 50+ TOOLS FOR TECH PROFESSIONALS
// STORAGE
// NETWORKING
SUBNET CALCULATOR
IP/CIDR full subnet breakdown
BANDWIDTH CALCULATOR
Bandwidth for users/devices
NETWORK SPEED CONVERTER
bps Kbps Mbps Gbps converter
CIDR REFERENCE TABLE
All CIDR /0–/32 prefixes
PING ESTIMATOR
Latency by distance & medium
PORT NUMBER REFERENCE
TCP/UDP port lookup
MAC ADDRESS LOOKUP
OUI vendor from MAC address
DNS RECORD TYPES
A AAAA MX CNAME TXT reference
VLSM CALCULATOR
Variable Length Subnet Masking
IP CLASS FINDER
Identify IP class & type
// SECURITY
PASSWORD GENERATOR
Cryptographically secure passwords
PASSWORD STRENGTH CHECKER
Entropy & crack time analysis
HASH GENERATOR
SHA-256 SHA-512 SHA-1 hashing
JWT DECODER
Decode & inspect JWT tokens
CAESAR CIPHER
Encode/decode Caesar cipher
PASSWORD ENTROPY CALC
Bits of entropy calculator
SSL EXPIRY CHECKER
Days until SSL cert expires
RANDOM TOKEN GENERATOR
UUID hex token API key gen
// DEVELOPER
BASE CONVERTER
Binary Octal Decimal Hex
ASCII / UNICODE LOOKUP
Char codes & Unicode values
URL ENCODER / DECODER
Encode & decode URLs
UNIX TIMESTAMP CONVERTER
Epoch ↔ human readable date
COLOR CODE CONVERTER
HEX RGB HSL CMYK converter
JSON FORMATTER
Validate prettify minify JSON
REGEX TESTER
Test regular expressions live
CSS SPECIFICITY CALC
Calculate CSS selector weight
HTTP HEADER REFERENCE
Common HTTP headers explained
HTTP STATUS CODES
All HTTP response codes
CRON EXPRESSION HELPER
Build & explain cron schedules
TEXT CASE CONVERTER
UPPER lower Title camelCase
LOREM IPSUM GENERATOR
Placeholder text generator
// HARDWARE
// SERVER & CLOUD