공학

무료 미국 와이어 게이지(AWG) 계산기 — 와이어 직경, 단면적 및 저항을 조회하고, 전류 및 전압 강하에 따라 와이어 크기를 조정하며, 직경을 AWG로 변환하고, 병렬 와이어의 동등한 게이지를 계산합니다.

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.

무료 전기 요금 계산기 — 가전제품별 월 전기 비용을 추정하고, 미터기 판독값으로 요금을 계산하며, 전기 요금을 비교하고, 연간 CO2 배출량을 추적합니다.

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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