Enter the energy in Joules and the voltage in Volts into the calculator to determine the Ampere Hours. This calculator can also evaluate any of the variables given the others are known.
- All Unit Converters
- Farads To Amp Hours Calculator
- Battery Reserve Capacity ↔ Amp Hours Calculator
- Joules Per Hour To Watts Calculator
Joules To Amp Hours Formula
The following formula is used to calculate the conversion from Joules to Ampere Hours.
Ah = J / (V * 3600)
Variables:
- Ah is the Ampere Hours (Ah)
- J is the energy in Joules (J)
- V is the voltage in Volts (V)
To calculate the Ampere Hours, divide the energy in Joules by the product of the voltage in Volts and 3600 (the number of seconds in an hour). This is because 1 Joule is equal to 1 Watt-second, and 1 Watt is equal to 1 Volt-Ampere. Therefore, to convert Joules to Ampere Hours, you need to divide by the voltage and the number of seconds in an hour to convert the time unit from seconds to hours.
| Joules (J) | Ampere Hours at 3.7 V (Ah) | Ampere Hours at 5 V (Ah) | Ampere Hours at 12 V (Ah) |
|---|---|---|---|
| 1 | 0.000075 | 0.000056 | 0.000023 |
| 5 | 0.000375 | 0.000278 | 0.000116 |
| 10 | 0.000751 | 0.000556 | 0.000231 |
| 25 | 0.001877 | 0.001389 | 0.000579 |
| 50 | 0.003754 | 0.002778 | 0.001157 |
| 75 | 0.005631 | 0.004167 | 0.001736 |
| 100 | 0.007508 | 0.005556 | 0.002315 |
| 150 | 0.011261 | 0.008333 | 0.003472 |
| 200 | 0.015015 | 0.011111 | 0.004630 |
| 250 | 0.018769 | 0.013889 | 0.005787 |
| 300 | 0.022523 | 0.016667 | 0.006944 |
| 400 | 0.030030 | 0.022222 | 0.009259 |
| 500 | 0.037538 | 0.027778 | 0.011574 |
| 600 | 0.045045 | 0.033333 | 0.013889 |
| 800 | 0.060060 | 0.044444 | 0.018519 |
| 1000 | 0.075075 | 0.055556 | 0.023148 |
| 1500 | 0.112613 | 0.083333 | 0.034722 |
| 2000 | 0.150150 | 0.111111 | 0.046296 |
| 3000 | 0.225225 | 0.166667 | 0.069444 |
| 5000 | 0.375375 | 0.277778 | 0.115741 |
| * Rounded to 6 decimals. Formula: Ah = J / (V × 3600). Reference voltages shown: 3.7 V (Li‑ion nominal), 5 V (USB), 12 V (automotive/lead‑acid). | |||
What is a Joules To Amp Hours?
Joules to Amp Hours is a conversion process used to convert the energy measurement unit, Joules, into the electric charge measurement unit, Ampere Hours. This conversion is often used in the context of electrical engineering and physics to compare or convert between the two different types of measurements. It involves understanding the relationship between energy, charge, and voltage, as the conversion requires the voltage to be known or assumed.
How to Calculate Joules To Amp Hours?
The following steps outline how to calculate the Joules To Amp Hours using the formula: Ah = J / (V * 3600).
- First, determine the energy in Joules (J).
- Next, determine the voltage in Volts (V).
- Next, use the formula Ah = J / (V * 3600) to calculate the Ampere Hours (Ah).
- Finally, calculate the Joules To Amp Hours.
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem:
Use the following variables as an example problem to test your knowledge.
energy in Joules (J) = 5000
voltage in Volts (V) = 12
