Electronics Calculators
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.
Calculate electrical power using various formulas (P=VI, P=V²/R, P=I²R)
How to use: Calculate electrical power consumption using multiple formulas. Select calculation method: Voltage & Current (P=V×I for most applications), Voltage & Resistance (P=V²/R when resistance known), or Current & Resistance (P=I²R for heating elements). Enter two known values. Results display: Power in Watts (W), Kilowatts (kW for large appliances), and Horsepower (HP for motors - 1 HP = 746W). Power determines energy consumption, heat generation, and circuit capacity. Examples: 120V × 10A = 1200W microwave, 12V × 2A = 24W LED strip. Used for sizing power supplies, calculating electricity costs, determining breaker requirements, and motor specifications.
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