Capacitor energy calculator
Online calculator for formulas used in electronic circuit design and electrical engineering.Basic electric calculations:
Ohm's Law,
Ohm's Law with power,
DC power,
AC real power,
LC resonant frequency,
Capacitor charging/discharging,
Capacitive reactance,
Capacitive current + reactive power,
Capacitor energy,
Capacitor Δ energy,
RC discharging,
Inductor square pulse,
Inductive reactance,
Inductive current + reactive power,
Inductor energy,
2 parallel resistors,
3 parallel resistors
Wire and winding calculations:
Calculate Capacitor energy: 10uF, 5V, J
Energy stored in a capacitor. You can calculate the energy knowing the capacitance and the voltage the capacitor is charged to. You can also calculate the capacitance necessary to store a desired amount of energy at a given voltage, or the voltage at which a given capacitance stores a desired amount of energy. E = ½ C.V2 formula.
Enter any 2 values, the 3rd field will be calculated:
Standard EIA Decade Values of capacitors - decade 10 to 100 uF
| E6 | E12 | E24 |
|---|---|---|
| 10 uF 15 uF 22 uF 33 uF 47 uF 68 uF | 10 uF, 12 uF 15 uF, 18 uF 22 uF, 27 uF 33 uF, 39 uF 47 uF, 56 uF 68 uF, 82 uF | 10 uF, 11 uF, 12 uF, 13 uF 15 uF, 16 uF, 18 uF, 20 uF 22 uF, 24 uF, 27 uF, 30 uF 33 uF, 36 uF, 39 uF, 43 uF 47 uF, 51 uF, 56 uF, 62 uF 68 uF, 75 uF, 82 uF, 91 uF |
Other capacitance decades:
1 - 10 pF, 10 - 100 pF, 100 - 1000 pF, 1 - 10 nF, 10 - 100 nF, 100 - 1000 nF, 1 - 10 uF, 10 - 100 uF, 100 - 1000 uF, 1 - 10 mF, 10 - 100 mF, 100 - 1000 mF, 1 - 10 F, 10 - 100 F, 100 - 1000 F, 1 - 10 kF, 10 - 100 kF, 100 - 1000 kF,Some common voltages:
| Alkaline Zinc-Carbon |
NiMH, NiCd rechargeable |
Li-Ion 3.6V |
Li-Ion 3.7V |
Li-Ion full 4.2V |
LiFePO4 (LFP) 3.2V |
Lead-acid battery |
Power supply |
|---|---|---|---|---|---|---|---|
|
1-cell: 1.5V 2-cell: 3V 3-cell: 4.5V 4-cell: 6V 5-cell: 7.5V 6-cell: 9V 7-cell: 10.5V 8-cell: 12V 9-cell: 13.5V 10-cell: 15V 11-cell: 16.5V 12-cell: 18V |
1-cell: 1.2V 2-cell: 2.4V 3-cell: 3.6V 4-cell: 4.8V 5-cell: 6V 6-cell: 7.2V 7-cell: 8.4V 8-cell: 9.6V 9-cell: 10.8V 10-cell: 12V 11-cell: 13.2V 12-cell: 14.4V |
1-cell: 3.6V 2-cell: 7.2V 3-cell: 10.8V 4-cell: 14.4V 5-cell: 18V 6-cell: 21.6V 7-cell: 25.2V 8-cell: 28.8V 9-cell: 32.4V 10-cell: 36V 11-cell: 39.6V 12-cell: 43.2V |
1-cell: 3.7V 2-cell: 7.4V 3-cell: 11.1V 4-cell: 14.8V 5-cell: 18.5V 6-cell: 22.2V 7-cell: 25.9V 8-cell: 29.6V 9-cell: 33.3V 10-cell: 37V 11-cell: 40.7V 12-cell: 44.4V |
1-cell: 4.2V 2-cell: 8.4V 3-cell: 12.6V 4-cell: 16.8V 5-cell: 21V 6-cell: 25.2V 7-cell: 29.4V 8-cell: 33.6V 9-cell: 37.8V 10-cell: 42V 11-cell: 46.2V 12-cell: 50.4V |
1-cell: 3.2V 2-cell: 6.4V 3-cell: 9.6V 4-cell: 12.8V 5-cell: 16V 6-cell: 19.2V 7-cell: 22.4V 8-cell: 25.6V 9-cell: 28.8V 10-cell: 32V 11-cell: 35.2V 12-cell: 38.4V |
1-cell: 6V 2-cell: 12V 3-cell: 18V 4-cell: 24V 5-cell: 30V 6-cell: 36V 7-cell: 42V 8-cell: 48V 9-cell: 54V 10-cell: 60V 11-cell: 66V 12-cell: 72V |
1.8V 2.5V 3V 3.3V 5V 6V 9V 12V 15V 18V 24V 48V |
Capacitor energy formula says:
•A 10uF (ten microfarads) capacitor charged to 5V (five volts) holds 125uJ (one hundred and twenty-five microjoules) of energy.•To store 125uJ (one hundred and twenty-five microjoules) of energy in a capacitor at 5V (five volts), its capacitance has to be 10uF (ten microfarads).
•If a 10uF (ten microfarads) capacitor had to store 125uJ (one hundred and twenty-five microjoules) of energy, you'd have to charge it to 5V (five volts).
This is a simple online calculator for formulas used in electronic engineering and design.
This online calculator is for reference only. I do not guarantee it to work correctly. You use this at your own risk only.