Car Audio Toolbox: Calculator

Car Audio Toolbox is an offline-first calculator and reference app built for car audio installers and DIY enthusiasts. No sign-in, no internet required for any calculation — every formula runs entirely on your device.

ELECTRICAL & POWER CALCULATORS
• Amplifier Power Calculator — estimate RMS power output from voltage, current draw, and amplifier class
• Wire Gauge Calculator — find the right AWG for your amp's power and ground wiring
• Fuse Size Calculator — size a fuse that protects your wire, not just your amp
• Ohm / Impedance Load Calculator — series, parallel, and series-parallel speaker wiring
• Amplifier Gain Setting Calculator — a calculated starting point before fine-tuning with a meter
• Voltage Drop Calculator — check real-world voltage drop for a chosen wire run
• Battery Runtime Calculator — estimate runtime for AGM or lithium battery banks

BOX DESIGN CALCULATORS
• Sealed Box Volume Calculator — net internal volume from your box dimensions
• Ported Box Volume Calculator — net volume accounting for port displacement
• Port Length Calculator — tune a round or slot port to your target frequency
• Slot Port Area Calculator — check port area against a port-noise guideline

REFERENCE & LEARNING
• Speaker & Subwoofer Wiring Diagrams — series, parallel, and dual-voice-coil configurations
• Car Audio Glossary — 30+ plain-language definitions, from RMS to Xmax
• Troubleshooting Guide — step-by-step checks for no-power, no-sound, and noise issues
• Installation Checklist — a phase-by-phase safety checklist for your next install

WHY CAR AUDIO TOOLBOX
• Works completely offline — every calculator runs on-device
• No account, no sign-up required
• Clear assumptions and safety notes on every result, not just a bare number
• Light, dark, and system theme support
• Built for both first-time installers and experienced enthusiasts

Car Audio Toolbox is a planning and reference tool. Always confirm critical specs like fuse ratings and wire gauge against your equipment's manual, and have complex installs reviewed by a qualified installer.

Have feedback or a formula suggestion? We're actively improving the app — your input shapes what gets built next.