Ohm's Law 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,
System bandwidth,
Bandwidth ↔ rise time
Wire and winding calculations:
Calculate Ohm's Law: 3V, 310kΩ, uA
Using Ohm's law, you can calculate the current knowing the voltage and resistance. Ohm's law can also calculate resistance knowing the voltage and current, and finally, calculate the voltage knowing the resistance and current. Works based on well known formulas: V=R.I R=V/I I=V/R
Enter any 2 values, the 3rd one will be calculated:
Standard EIA Decade Values of resistors - decade 100 to 1000 kΩ
| E6 | E12 | E24 |
|---|---|---|
| 100 kΩ 150 kΩ 220 kΩ 330 kΩ 470 kΩ 680 kΩ | 100 kΩ, 120 kΩ 150 kΩ, 180 kΩ 220 kΩ, 270 kΩ 330 kΩ, 390 kΩ 470 kΩ, 560 kΩ 680 kΩ, 820 kΩ | 100 kΩ, 110 kΩ, 120 kΩ, 130 kΩ 150 kΩ, 160 kΩ, 180 kΩ, 200 kΩ 220 kΩ, 240 kΩ, 270 kΩ, 300 kΩ 330 kΩ, 360 kΩ, 390 kΩ, 430 kΩ 470 kΩ, 510 kΩ, 560 kΩ, 620 kΩ 680 kΩ, 750 kΩ, 820 kΩ, 910 kΩ |
Other resistance decades:
0.1 - 1 Ω, 1 - 10 Ω, 10 - 100 Ω, 100 - 1000 Ω, 1 - 10 kΩ, 10 - 100 kΩ, 100 - 1000 kΩ, 1 - 10 MΩ, 10 - 100 MΩ, 100 - 1000 MΩ,Some common voltages:
| Alkaline Zinc-Carbon |
NiMH, NiCd rechargeable |
Li-Ion 3.6V |
Li-Ion 3.7V |
LiFePO4 (LFP) 3.2V |
Lead-acid battery |
Power supply |
Mains voltage |
|---|---|---|---|---|---|---|---|
|
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: 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 |
3-cell: 6V 6-cell: 12V 9-cell: 18V 12-cell: 24V 15-cell: 30V 18-cell: 36V 21-cell: 42V 24-cell: 48V 27-cell: 54V 30-cell: 60V 33-cell: 66V 36-cell: 72V |
1.8V 2.5V 3V 3.3V 5V 6V 9V 12V 15V 18V 24V 48V |
100V 110V 115V 120V 127V 208V 220V 230V 240V 380V 400V 415V |
Ohm's Law says:
•When 3V (three volts) voltage is applied to 310kΩ (three hundred and ten kiloohms) resistance, the resulting current is 9.677419354839uA (nine point six seven seven four one nine three five four eight three nine microamps).•If a 9.677419354839uA (nine point six seven seven four one nine three five four eight three nine microamps) current is passed via 310kΩ (three hundred and ten kiloohms) resistance, its voltage drop is 3V (three volts).
•When a resistor passing 9.677419354839uA (nine point six seven seven four one nine three five four eight three nine microamps) drops 3V (three volts), its resistance is 310kΩ (three hundred and ten kiloohms).
•If 3V (three volts) voltage applied to a resistor results in 9.677419354839uA (nine point six seven seven four one nine three five four eight three nine microamps) current, the resistance is 310kΩ (three hundred and ten kiloohms).
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.