Utilities

Tools for IT professionals

Free, practical utilities and calculators for system administrators, developers and infrastructure engineers.

All toolsSystemNetworkDeveloperConverters
rwx

Linux Permission Calculator

Build chmod octal and symbolic permissions.

CIDR

CIDR Calculator

Calculate IPv4 network, broadcast and usable hosts.

{ }

JSON Formatter

Validate and pretty-print JSON data locally in your browser.

UTC

Epoch Converter

Convert Unix timestamps into readable local dates.

*/

Cron Generator

Generate cron expressions from a simple schedule.

YML

YAML Validator

Validate and format YAML files.

64

Base64 Encoder

Encode and decode Base64 strings.

#

Hash Generator

Generate common hashes for text.

IP

IP Calculator

Calculate IPv4 network details.

LVM

Storage Calculator

Estimate usable storage and RAID capacity.

RX

Regex Tester

Test regular expressions quickly.

VM

VM Sizing

Estimate basic VM resources for workloads.