kWh to Ah Calculator - Calculator Hub

kWh to Ah Formula

The formula to convert an energy value from kilowatt-hours to ampere-hours is Ah = (kWh x 1,000) / V.

\text{Energy in Ah} = \frac{\text{Energy in kWh} \times {1,000}}{\text{Voltage}}

{Ah} = \frac{{kWh} \times {1,000}}{V}

Where kWh is the energy value in kilowatt-hours, V is the voltage of the energy source, and Ah is the equivalent energy value in Amp-Hours.

How to convert kilowatt-hours to amp-hours?

To convert energy value from kilowatt-hours to amp-hours, follow the simple steps below:

Write down the energy value in kilowatt-hours (kWh).
Multiply it by 1000.
Divide the result by the value of the energy source voltage (V).
The result from the equation is the value of an energy value in amp-hours (Ah).

Example: Find the energy capacity of a 12V battery

What is the energy capacity of a 12V battery that can produce 0.7 kWh of electric energy? Assuming it can use 100% of its capacity.

To find the energy capacity of the battery in amp-hours or Ah, use the following formula and follows by entering the given values.

$\text{Energy in Ah} = \frac{\text{Energy in kWh} \times {1,000}}{\text{Voltage}}$

$\text{Energy in Ah} = \frac{{0.7\ kWh} \times {1,000}}{12\ V}$

Therefore,

$\text{Energy in Ah} = \frac{700\ kWh}{12\ V}$

$\text{Energy in Ah} = {58.33 Ah}$

So the energy capacity of the 12V battery is 58.33 Ah.

Typical kWh to Ah Conversion Table

Here is the conversion table from kilowatt-hours (kWh) to amp-hours (ah) for typical voltage sources. Use the table for a quick reference and remember it for everyday use.

12V Battery

Kilowatt-hours (kWh)	Voltage (V)	Amp-hours (Ah)
0.1 kWh	12V	8.33 Ah
0.5 kWh	12V	41.67 Ah
1 kWh	12V	83.33 Ah
2 kWh	12V	166.67 Ah
3 kWh	12V	250.00 Ah
4 kWh	12V	333.33 Ah
5 kWh	12V	416.67 Ah
6 kWh	12V	500.00 Ah
7 kWh	12V	583.33 Ah
8 kWh	12V	666.67 Ah
9 kWh	12V	750.00 Ah
10 kWh	12V	833.33 Ah

24V Battery

Kilowatt-hours (kWh)	Voltage (V)	Amp-hours (Ah)
0.1 kWh	24V	4.17 Ah
0.5 kWh	24V	20.83 Ah
1 kWh	24V	41.67 Ah
2 kWh	24V	83.33 Ah
3 kWh	24V	125.00 Ah
4 kWh	24V	166.67 Ah
5 kWh	24V	208.33 Ah
6 kWh	24V	250.00 Ah
7 kWh	24V	291.67 Ah
8 kWh	24V	333.33 Ah
9 kWh	24V	375.00 Ah
10 kWh	24V	416.67 Ah

48V Battery

Kilowatt-hours (kWh)	Voltage (V)	Amp-hours (Ah)
0.1 kWh	48V	2.08 Ah
0.5 kWh	48V	10.42 Ah
1 kWh	48V	20.83 Ah
2 kWh	48V	41.67 Ah
3 kWh	48V	62.50 Ah
4 kWh	48V	83.33 Ah
5 kWh	48V	104.17 Ah
6 kWh	48V	125.00 Ah
7 kWh	48V	145.83 Ah
8 kWh	48V	166.67 Ah
9 kWh	48V	187.50 Ah
10 kWh	48V	208.33 Ah

Kilowatt hour to Amp hour (kWh to Ah) calculator