Ampere-hours (Ah)	Milliampere-hours (mAh)
1 Ah	1000 mAh
2 Ah	2000 mAh
5 Ah	5000 mAh
10 Ah	10000 mAh
25 Ah	25000 mAh
50 Ah	50000 mAh
100 Ah	100000 mAh
250 Ah	250000 mAh
500 Ah	500000 mAh
1000 Ah	1000000 mAh

Convert Ampere-hours to Milliampere-hours

Convert ampere-hours to milliampere-hours (Ah to mAh) with our instant calculator. 1 Ah = 1000 mAh. Includes exact formula and reference tables.

How to Convert Ampere-hours to Milliampere-hours (Ah to mAh)

1 Ampere-hour (Ah) is equal to 1000 Milliampere-hours (mAh). Multiply the ampere-hour value by 1000

Quick Answer 1 Ah = 1000 mAh

Formula mAh = Ah × 1000

Inverse Factor 1 mAh = 0.001 Ah

Unit Definitions & Metrology Context

The standard SI base unit of electric current is the ampere (A), defined by taking the fixed numerical value of the elementary charge e to be 1.602176634 × 10⁻¹⁹ coulombs per second.

About Ampere-hours (Ah): Ampere-hour (Ah) is a unit in the Electric Current measurement category. It is widely used in battery capacity over 1 hour (3,600 c). Relative to the electric current base unit, 1 Ah equals 1 Amperes (A).

About Milliampere-hours (mAh): Milliampere-hour (mAh) is a unit in the Electric Current measurement category. It is widely used in phone, laptop & power bank battery capacity. Relative to the electric current base unit, 1 mAh equals 0.001 Amperes (A).

Need to convert in the opposite direction? Visit our Convert Milliampere-hours to Ampere-hours (mAh to Ah) calculator (1 mAh = 0.001 Ah).

Step-by-Step Worked Examples (Ah to mAh)

Convert 5 Ampere-hours to Milliampere-hours: Applying the formula (mAh = Ah × 1000): starting with 5 Ah, multiply the ampere-hour value by 1000 to get 5000 mAh.
Convert 10 Ampere-hours to Milliampere-hours: Applying the formula (mAh = Ah × 1000): starting with 10 Ah, multiply the ampere-hour value by 1000 to get 10000 mAh.
Convert 50 Ampere-hours to Milliampere-hours: Applying the formula (mAh = Ah × 1000): starting with 50 Ah, multiply the ampere-hour value by 1000 to get 50000 mAh.

Popular Electric Current Conversions

Ampere ⇄ Milliampere

1 ampere (A) equals exactly 1,000 milliamperes (mA).

Milliampere ⇄ Ampere

Divide milliamperes by 1,000 to convert to amperes (500 mA = 0.5 A).

Milliampere-hour ⇄ Ampere-hour

Divide milliampere-hours by 1,000 to convert battery capacity to ampere-hours (5,000 mAh = 5 Ah).

Ampere-hour ⇄ Milliampere-hour

Multiply ampere-hours by 1,000 to get battery capacity in milliampere-hours (mAh).

Microampere ⇄ Milliampere

1 milliampere contains 1,000 microamperes (µA).

Frequently Asked Questions

Verified answers and formulas for converting ampere-hours to milliampere-hours.

How many milliampere-hours are in 1 ampere-hour?

There are 1000 milliampere-hours (mAh) in 1 ampere-hour (Ah). Conversely, 1 milliampere-hour equals 0.001 ampere-hours.

How do you convert ampere-hours to milliampere-hours?

To convert ampere-hours (Ah) to milliampere-hours (mAh), use the formula: mAh = Ah × 1000. Multiply the ampere-hour value by 1000. For example, 10 Ah equals 10000 mAh.

How do I convert back from milliampere-hours to ampere-hours?

To convert in the reverse direction from milliampere-hours (mAh) to ampere-hours (Ah), use the inverse formula: Ah = mAh / 1000. Divide the milliampere-hour value by 1000 (1 mAh = 0.001 Ah).

What is the difference between ampere-hour (Ah) and milliampere-hour (mAh)?

Both ampere-hour and milliampere-hour measure electric current. Ampere-hour (Ah) is a unit in the Electric Current measurement category. It is widely used in battery capacity over 1 hour (3,600 c). Relative to the electric current base unit, 1 Ah equals 1 Amperes (A). Milliampere-hour (mAh) is a unit in the Electric Current measurement category. It is widely used in phone, laptop & power bank battery capacity. Relative to the electric current base unit, 1 mAh equals 0.001 Amperes (A).

How do you convert mAh (milliampere-hours) to Ah (ampere-hours)?

To convert mAh to Ah, divide the mAh rating by 1,000. For example, a 5,000 mAh smartphone battery or power bank has a capacity of 5 Ah (5,000 ÷ 1,000 = 5 Ah).