Engineering Tools & Calculators
Free online calculators for cable and wire harness design
Professional Cable Design Tools
Our suite of engineering calculators helps you design safe, efficient cable assemblies and wire harnesses. These tools are used by engineers, electricians, and designers worldwide for accurate cable specifications.
Wire Gauge Calculator
Calculate the correct wire gauge (AWG/mm²) based on current load, cable length, and acceptable voltage drop. Essential for compliance with AS/NZS 3000 and NEC standards.
- Current capacity calculation
- Voltage drop analysis
- Temperature derating
- Multiple standards
Voltage Drop Calculator
Determine voltage drop across cable runs for single-phase and three-phase systems. Critical for maintaining power quality in long cable runs.
- Single & 3-phase support
- Various conductor materials
- AC/DC calculations
- Percentage drop display
Ampacity Calculator
Calculate the maximum safe current-carrying capacity (ampacity) for different wire gauges, installation methods, and ambient temperatures.
- Temperature compensation
- Installation method factors
- Bundling considerations
- Conduit calculations
Cable Length Calculator
Estimate required cable lengths for various routing scenarios including conduit runs, cable trays, and flexible applications with service loops.
- Service loop allowance
- Bend radius calculations
- Conduit fill analysis
- Material estimates
Why Use Our Cable Engineering Tools?
Standards Compliant
All calculations follow Australian (AS/NZS 3000), American (NEC), and international (IEC) electrical standards to ensure safe, code-compliant installations.
Save Time & Money
Quickly determine correct cable specifications without manual calculations. Reduce design errors, avoid over-sizing cables, and optimize material costs.
Engineer Verified
Developed and verified by electrical engineers with decades of experience in cable assembly design and manufacturing for critical applications.
Need Custom Cable Assembly Design?
Our engineering team can help you design custom wire harnesses and cable assemblies tailored to your exact specifications and requirements.
Consult Our Engineers