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Calculadora gratuita de Calibre de Fio Americano (AWG) — consulte o diâmetro do fio, área da seção transversal e resistência; dimensione fios por corrente e queda de tensão; converta diâmetros para AWG; e calcule o calibre equivalente para fios em paralelo.

Free American Wire Gauge (AWG) wire size reference table and calculator. Look up wire diameter, cross-sectional area, resistance, ampacity, skin depth, and breaking force for AWG 4/0 through AWG 40. Supports copper, aluminum, and 6 other materials.

Calculadora de conta de luz gratuita — estime seus custos mensais de eletricidade por aparelho, calcule contas a partir de leituras do medidor, compare tarifas de eletricidade e acompanhe as emissões anuais de CO2.

Free Gear Ratio Calculator — compute output RPM, torque multiplication, mechanical advantage, and power for single-stage, multi-stage compound gear trains, or back-calculate the ratio from known speeds.

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Free Parallel Resistor Calculator — instantly find equivalent resistance for any number of resistors connected in parallel. Supports mixed units (µΩ to GΩ), missing-resistor solver, series mode, step-by-step breakdown, conductance, current distribution, and power dissipation.

Free Resistor Calculator — decode resistor color codes (3, 4, 5, and 6-band), calculate series and parallel resistance, solve voltage divider circuits, and decode SMD resistor codes. Includes a visual resistor diagram and IEC 60062 color band reference chart.

Free Resistor Color Code Chart and Calculator — decode 3-band, 4-band, 5-band, and 6-band resistors instantly. Includes reverse lookup, parallel/series calculator, SMD decoder, and full IEC 60062 reference table.

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