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Convert between 电流 units instantly with our free online converter.

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电流 Converter

免费电流转换器, 即时换算安培、毫安、微安和千安

使用 OmniConverter 免费在线电流转换器在安培、毫安、微安、千安和兆安之间即时换算。1 安培等于 1,000 毫安，1 毫安等于 1,000 微安。无论你是处理电子设备、电池管理还是电路设计，都能获得精确的实时电流换算。

使用方法

通过三个简单步骤进行转换。

1

输入电流值

2

选择源电流单位与目标单位

3

查看转换后的电流读数

热门电流换算

Amperes 至 MilliamperesMilliamperes 至 AmperesAmperes 至 MicroamperesMicroamperes 至 AmperesMilliamperes 至 MicroamperesMicroamperes 至 MilliamperesAmperes 至 KiloamperesKiloamperes 至 AmperesKiloamperes 至 MegaamperesMegaamperes 至 KiloamperesAmperes 至 MegaamperesMegaamperes 至 AmperesMilliamperes 至 KiloamperesKiloamperes 至 MilliamperesMegaamperes 至 MilliamperesMilliamperes 至 MegaamperesMicroamperes 至 KiloamperesKiloamperes 至 Microamperes

常用基准

参考

1 A → A

1 A

参考

1 A → mA

1000 mA

参考

1 A → µA

1000000 µA

参考

1 A → kA

0.001 kA

参考

1 A → MA

0.000001 MA

实际应用场景

中国国家标准GB/T标准规定，家用电压为220V/380V。住宅配电箱中，照明回路用10A断路器，插座回路用16A，空调回路用20A，厨房回路用25A。漏电保护器（RCD）的额定动作电流为30mA（人身保护）和100-300mA（防火保护）。手机充电器：普通USB-A输出2A（10W），USB-C PD快充可达5A/20V（100W）。移动电源标称容量10,000mAh是指电芯在3.7V下的电量，实际给手机5V充电时转换效率约80-90%，实际输出约7,000-8,000mAh。LED灯珠的典型工作电流为20-350mA（视功率而定）。单片机（STM32）在运行模式下消耗几十mA，休眠模式下仅几μA。电动汽车充电：家用交流慢充7kW（32A/220V），公共直流快充可达250A/500V（125kW以上）。工业中，低压断路器（如施耐德）的额定电流达数千A。电气工程中需要将kW换算为A（I = P / U / cosφ）。在传感领域，PM2.5传感器的工作电流在μA级别。高压输电线路的电流达kA级别。

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常见问题

常见换算问题的快速解答

220V电流怎么算？+

电流（A）= 功率（W）/ 电压（V）。中国家用电压220V。2,200W空调 = 10A。

家用电器安培数是多少？+

空调约10-16A，电热水器约10-16A，电磁炉约10A，照明约1-2A。

什么是安培？+

安培（A）是电流的国际单位制（SI）单位。

如何将mA换算成A？+

mA除以1,000即可得到A。

中国国家标准对电气有什么要求？+

中国GB/T 16895系列标准规定了低压电气装置的安全要求。

如何将kA换算成A？+

kA乘以1,000即可得到A。

什么是mA？+

mA是毫安，千分之一安培。手机充电器输出约1,000-3,000 mA。

Latest Blog Posts

Tips, guides, and insights about unit conversions

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Quick Answer: 电流 Converter

Convert 电流 instantly — enter any value and get all units at once. Common electric current conversions include milliamperes to amperes (1000 mA = 1 A), microamperes to milliamperes (1000 µA = 1 mA), and kiloamperes to amperes (1 kA = 1000 A). Electric current conversion is essential for electronics design, electrical engineering, battery capacity planning, circuit breaker selection, and solar power system sizing.

How the 电流 Converter Works

Our electric current converter converts between amperes and its multiples, from microamperes in sensitive electronics to kiloamperes in industrial power systems, using precise SI conversion factors.

Formula & Sources

Ampere is SI base unit (since 2019: elementary charge 1.602176634e-19 C). Prefixes are exact powers of 10.

Worked Example

Example: 500 mA = 0.5 A = 500,000 µA. 2 A charger at 5 V = 10 W power.

Common 电流 Conversions

Common electric current conversions include milliamperes to amperes (1000 mA = 1 A), microamperes to milliamperes (1000 µA = 1 mA), and kiloamperes to amperes (1 kA = 1000 A). A typical smartphone charger draws 1-2 A; household circuits carry 15-20 A.

When to Use 电流 Conversion

Electric current conversion is essential for electronics design, electrical engineering, battery capacity planning, circuit breaker selection, and solar power system sizing.

Accuracy & Common Mistakes

All factors are stored unrounded and computed in double precision. We avoid cumulative rounding by converting via a base unit. Always verify critical results with a second source for safety-critical tasks.

Frequently Asked Questions

How many mA is 1 A?

1 ampere = 1,000 milliamperes. 500 mA = 0.5 A.

What current is a phone charger?

Commonly 1–2 A at 5 V (5–10 W). Fast chargers use higher voltage.

Is ampere the same as watt?

No. Ampere is current; watt is power (watts = amps × volts).

Popular Electric Current comparisons

Jump directly to a side-by-side comparison — no typing needed. Also discoverable via search.

Ampere → Milliampere→Ampere → Microampere→Ampere → Kiloampere→Ampere → Megaampere→Milliampere → Microampere→Milliampere → Kiloampere→
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