CableForge: Low Voltage Tools

CableForge is the all-in-one field toolkit for low-voltage and structured-cabling technicians. 22 pro tools for data, network, security, AV, fiber, and power — every reference table and calculator you reach for on a job, in one fast, offline app.

Built by trade, for trade. No clutter, no logins, no internet required — just the numbers you need, on the truck or in the ceiling.

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WHAT'S INSIDE — 22 TOOLS
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DATA CABLING
• T568A / T568B RJ45 pinouts — color-accurate wiring for jacks, plugs & patch panels
• Cat cable specs — Cat5e, Cat6, Cat6A, Cat7, Cat8 bandwidth & distance
• Run-length limits — copper, HDMI & AV distances at a glance

NETWORK & PoE
• IP subnet calculator — CIDR, subnet mask, network, broadcast & usable hosts
• PoE reference — 802.3af / at / bt power classes
• PoE loss calculator — voltage at the device over any gauge and run

SECURITY & SURVEILLANCE
• Camera storage calculator — size an NVR by cameras, bitrate & retention
• Camera lens & pixel density — field of view, angle & DORI (detect/observe/recognize/identify)
• Alarm zones & EOL — supervised loops and end-of-line resistor values
• Access control — maglocks vs strikes, REX, Wiegand & OSDP wiring

AUDIO / VIDEO
• Speaker impedance — series / parallel loads
• 70V / 100V constant-voltage — distributed audio tap budgets
• Projector throw — mounting distance from throw ratio & screen size
• Coax & HD-over-coax — RG59 / RG6 distances for TVI/CVI/AHD

VOICE & TELECOM
• 25-pair color code — telco binder group order

FIBER
• Fiber color code — 12-strand order & fiber types
• Fiber loss budget — optical loss vs link budget

POWER
• Voltage drop calculator — DC device runs, AWG-aware
• Battery standby — backup runtime & sizing for alarm/access panels

INSTALL & PATHWAYS
• Conduit fill — EMT fill % against NEC limits
• Bend radius & pull tension — cable-safe install limits

SOUND MASKING
• Design guide — levels, spacing & tuning

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WHY CABLEFORGE
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• 100% offline — works in basements, ceilings, and dead zones
• Fast, dark, high-contrast UI built for the job site
• No account, no sign-up, no data collection
• One low-voltage app instead of ten single-purpose calculators

WHO IT'S FOR
Structured cabling installers, low-voltage electricians, CCTV & security integrators, network cable techs, AV installers, fiber technicians, fire/life-safety and access-control pros, and apprentices studying the trade.

Reference values follow TIA-568, TIA-598, IEEE 802.3 and NEC where applicable. Always verify against the AHJ, manufacturer specs and current code.

Free to use with ads. Upgrade to CableForge Pro once to remove ads and support development.

Have a tool you want added — intercom, nurse call, CCTV PTZ, takeoffs? Email contact@tapforgeapps.com. We build what the trade asks for.

Recent changes:
What's new

Added cross-promotion to sibling TapForge trade apps (Voltbox, VoltPrep, BuildSmith)
Improved crash reporting so future issues are easier to diagnose and fix quickly