Milliwatt-hours to Watt-minutes conversion

What is milliwatt-hours?

A Milliwatt-hour is a unit of energy and its units, kWh, are formed with W for watt and h for hour from SI unit system combined with letter m, metric prefix, for 0.001 or $10^{-3}$. Its definition, in the context of electricity, is the energy of one watt power flowing for one hour.

Followings equivalent equations are identical but in different units. Please note that factor $10^{-3}$ is representing Milli prefix in mWh unit.

$$1 mWh = 10^{-3}*Pt = 10^{-3}*IVt = 3600 * 10^{-3}*J = 2.247 * 10^{22} * 10^{-3} eV = 8.598*10^5 * 10^{-3} cal$$

$P - Power$
$t - Time \text{ (in hours. Multiply by 3600 to convert to seconds)}$
$I - Current$ $V - Volts$
$J - Joules$
$eV - Electronvolt$
$cal - Calories$

Wikipedia page for Kilowatt-hour (watt-hour redirected to kWh) UCI article on Energy Units and Conversions Ian Woofenden's explanation on difference between Watts and Watt-Hours

What is watt-minutes?

A great question about a useful unit of energy measurement!

Watt-minutes, also known as Watt-hours (Wh) or kilowatt-hours (kWh), is a unit of energy that measures the amount of electrical energy used or produced.

One watt-minute is equivalent to one joule (J) of energy. Since there are 60 minutes in an hour, one Wh (or kwh) is equal to:

• 1 Wh = 3.6 kilojoules (kJ)
• 1 kWh = 3,600 kiljoules (kJ)

Watt-minutes is a convenient unit for measuring energy consumption or production over time, especially in the context of electricity usage. For example, if you want to know how much electricity your household used over the course of an hour, the watt-minute measurement would be a useful way to express that value.

In everyday life, watt-minutes are commonly used by:

• Utilities and energy providers to measure customer consumption
• Electric vehicles (EVs) to estimate range or charge time based on available battery capacity
• Appliances and devices to display their power consumption ratings

I hope this helps you understand the concept of watt-minutes!