Wire Calculator
Ohm's Law, voltage drop, resistor, and electrical calculation tools
Electronics Calculators
Professional electrical and electronics calculators for engineers, technicians, and hobbyists. Calculate voltage, current, resistance, power, and component values with precision.
Determine proper wire gauge based on current, distance, and voltage drop requirements
How to use: Determine proper wire gauge (AWG) for electrical installations based on current load and distance. Enter Current in amps (circuit load), Distance in feet (one-way wire run), Max Voltage Drop percentage (NEC recommends 3% for branch circuits, 5% total system), and System Voltage (120V household, 12V automotive, 24V industrial). Results show: Recommended AWG size, Ampacity (maximum safe current carrying capacity), Actual Voltage Drop, and Percent Drop. Smaller AWG number = thicker wire. Common sizes: 14 AWG (15A max), 12 AWG (20A max), 10 AWG (30A max). Undersized wire causes overheating, fire hazard, voltage drop. Critical for code compliance and safety.
Complete Electronics Calculator Suite
Professional-grade electrical and electronics calculators for engineers, technicians, students, and hobbyists. Calculate electrical parameters with precision using industry-standard formulas and methods.
Basic Electrical Laws
- • Ohm's Law calculator (V=IR)
- • Power calculations (P=VI, P=V²/R)
- • Current, voltage, resistance solving
- • Electrical parameter conversions
- • Circuit analysis tools
Voltage & Current
- • Voltage drop calculations
- • Wire gauge recommendations
- • Current capacity analysis
- • Power loss calculations
- • Circuit efficiency analysis
Component Calculations
- • Resistor color code decoder
- • Series/parallel combinations
- • LED current limiting resistors
- • Capacitor value calculations
- • Component tolerance analysis
Circuit Design
- • Wire sizing for applications
- • Voltage drop optimization
- • Power distribution planning
- • Safety factor calculations
- • Load analysis tools
LED & Lighting
- • LED resistor calculations
- • Forward voltage analysis
- • Current limiting design
- • Series vs parallel configuration
- • Power consumption optimization
Professional Tools
- • Engineering-grade precision
- • Industry standard formulas
- • Code compliance checking
- • Safety recommendations
- • Technical documentation