Diagnostic & Reference Tools
Browser-based tools built for actual field work. No sign-up, no login, no nonsense. Bookmark the ones you use.
OBD2 Code Lookup
Search 200+ OBD2 fault codes by code number. Get plain-English explanations, common causes, and recommended fixes — plus links to relevant repair articles.
PC Upgrade Path Finder
Type in your laptop or desktop model and get exact upgrade recommendations — RAM, SSD, and Wi-Fi card — with compatibility notes and current pricing.
IP Subnet Calculator
Enter an IP address and CIDR notation or subnet mask. Get network address, broadcast address, usable host range, and host count instantly.
Wire Gauge Calculator
Input amperage, wire run distance, and voltage (12V / 24V / 120V / 240V). Get recommended AWG, voltage drop percentage, and safety warnings.
Barcode Identifier
Paste or type a barcode value and identify its symbology: Code 128, Code 39, UPC-A, EAN-13, QR, DataMatrix, and more. Useful for scanner configuration work.
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If there's a reference tool you wish existed — something you'd actually use in the field — let me know. I build these because I use them myself.
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