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电气与电子计算器

面向电工、电子爱好者和工程学生的快速准确计算工具，所有计算均在浏览器中即时完成。

基础与欧姆定律

The core electrical relationships — Ohm's law, power, and how voltage and current divide in a circuit. The starting point for almost every other calculation.

电阻与电容

Read resistor and capacitor codes, pick the right series resistor for an LED, and combine components in series or parallel.

电力、配线与电源

Size cables and conduit, work out voltage drop, three-phase power, transformer and motor ratings. Always check a final design against your local electrical code.

家庭能源与电费

Work out what your electricity actually costs. These calculators apply the real tax stack of your country — energy tax, grid fees, VAT and, where it exists, a subsidised quota or progressive block tariff — instead of multiplying kWh by a single price.

供暖与电动汽车

Size electric heating and EV charging for a home — sauna heaters, room and underfloor heating, charging time and peak demand.

光伏、储能与电动汽车

Plan solar, battery and EV installs: backup runtime, low-voltage DC cable sizing, charger load sharing and charging cost.

电子电路设计

Design small electronics circuits — RC filters, 555 timer stages and battery runtime.