01 /
Actually useful
Network planning, storage calculations, encoding, and secure local transformations for real IT work.
THE TECHNICIAN'S DIGITAL WORKBENCH
Less searching.
More solving.
Fast, accurate, free utilities for the people who manage networks, servers, and everything in between. No accounts. No surprise paywalls.
THE TOOL DIRECTORY
Find your next shortcut.
16 practical utilities across networking, infrastructure, security, and developer workflows.
16 tools
Networking
IPv4 Subnet Calculator
Network address, usable hosts, wildcard, and binary mask in seconds.
Open tool NetworkingVLSM Subnet Planner
Allocate multiple differently sized networks from one parent block.
Open tool NetworkingDHCP Scope Planner
Size a DHCP pool after reserved static addresses.
Open tool NetworkingWildcard Mask Calculator
Convert CIDR notation to a Cisco-style inverse mask.
Open tool NetworkingIP in Subnet Checker
Check if an IPv4 host falls within a CIDR network.
Open tool InfrastructureRAID Capacity Calculator
Compare usable capacity for RAID 0, 1, 5, 6, and 10.
Open tool InfrastructureData Transfer Time Calculator
Estimate copy times with real-world utilization and overhead.
Open tool InfrastructureBackup Storage Estimator
Plan full and incremental backup capacity.
Open tool SecuritySecure Password Generator
Create random passwords locally using browser cryptography.
Open tool SecuritySHA-256 Hash Generator
Calculate a text SHA-256 digest entirely in your browser.
Open tool NetworkingMAC Address Formatter
Normalize and validate 48-bit MAC address notation.
Open tool Developer ToolsJSON Formatter & Validator
Pretty-print, minify, and validate JSON data.
Open tool Developer ToolsBase64 Encoder & Decoder
Encode or decode Unicode text as Base64.
Open tool Developer ToolsURL Encoder & Decoder
Escape and unescape URL parameter values.
Open tool Developer ToolsUnix Timestamp Converter
Convert UTC timestamps and Unix epoch values.
Open tool Developer ToolsCSV to JSON Converter
Convert quoted CSV records into JSON objects.
Open toolNo matching tools. Try a different search or category.
PRACTICAL REFERENCE
Know the why, not just the answer.
Short, evergreen field guides for your next network or storage project.
FIELD GUIDE 01
IPv4 Subnetting Cheat Sheet
A practical, reusable reference for CIDR notation, subnet masks, usable hosts, and planning smaller networks.
Read guide ↗FIELD GUIDE 02RAID 0 vs 1 vs 5 vs 6 vs 10
Understand theoretical disk capacity, redundancy, and key tradeoffs before selecting an array layout.
Read guide ↗FIELD GUIDE 03Planning Backup Storage and Retention
Use an understandable capacity model and recovery goals to size a backup repository before rollout.
Read guide ↗BUILT DIFFERENTEverything you need.
Everything you need.
Nothing you don't.
Every tool does real work in your browser. No signups, no trackers built into the tools, no data leaving your device for computation.
02 /
Private by design
Calculations run in browser-side JavaScript. Sensitive text is not submitted to a server by our tools.
03 /
Fast by default
A lightweight static site with no accounts, databases, or dependencies on subscription APIs.
BOOKMARK THE BENCHBuilt for the next ticket,
Built for the next ticket,
not the next subscription.
Tools you can keep coming back to. Share this page with your team.