DC Wire Size & Fuse Calculator

DC Wire is the professional companion for all your low-voltage electrical engineering and DIY projects.

Whether you are working on a Camper Van conversion, a Solar system, a Marine electrical setup, or a high-power Car Audio system, DC Wire helps you calculate everything with precision to ensure safety and efficiency.

Core Calculators & Tools: • Wire Gauge Calculator: Find the ideal AWG or mm² size based on voltage, current, and length. • Voltage Drop: Calculate real voltage loss to prevent equipment failure. • Fuse & Breaker Sizing: Protect your circuits with the correct fuse ratings. • Battery Runtime: Estimate how long your system will run under load. • Solar Sizing: Calculate required solar panels and battery bank for off-grid power. • Car Audio Tools: Speaker wiring (Series/Parallel), amplifier sizing, and speaker cable recommendations. • Ohm’s Law & Power: Easily convert between Volts, Amps, Watts, and Ohms.

Calculator Box for speakers, Liters, volume, frequency and more 3d model view.

Wire Real measurement simulated on screen, cut wire, put on screen and know the real measure of this !

DTC´s search included with description.

CAR AUDIO & SUBWOOFER BOXES

Calculate amplifier wiring, speaker connections, speaker cable and capacitor requirements. Plan rectangular or trapezoidal subwoofer enclosures, estimate usable volume and explore enclosure models. Advanced speaker-count options and the 3D view require Premium or the available rewarded trial.

CAR AUDIO & SUBWOOFER BOXES

Calculate amplifier wiring, speaker connections, speaker cable and capacitor requirements. Plan rectangular or trapezoidal subwoofer enclosures, estimate usable volume and explore enclosure models. Advanced speaker-count options and the 3D view require Premium or the available rewarded trial.

its not Wireona®

Reference Guides (Premium): • Fuse Types: Visual guide for Mini, ATO, MIDI, ANL, and more. • Trailer Wiring: Standards for 4, 7 (US), and 13-pin (EU) connectors. • Relay Diagrams: How to wire 5-pin relays (85, 86, 87, 87a, 30). • Grounding & 'Big 3': Best practices for automotive grounding. • AWG to Metric Converter: Quick reference for wire cross-sections.

Why Choose DC Wire? •

Pro Dark Interface: Industrial carbon fiber design optimized for field work. • Multi-Language Support: Available in English, Portuguese, Spanish, Arabic, and more. • Project Management: Save your calculations into custom projects (Van, Boat, etc.). • Accurate Formulas: Based on international standards and material resistivity (OFC/CCA).

Stop guessing your wire sizes. Avoid overheating and power loss. Download DC Wire today and power your projects with professional precision!