Volts to resistance (Ohm’s law) – Formula, examples, conversion

With this calculator you can convert from volts to resistance using Ohm’s law.

To facilitate the compression, the formula of volts to resistance is explained , in addition we show how to convert from volts to resistance in 1 step , some examples of volts are made to resistance and finally a table of volts to resistance is presented .

Formula to convert volts to resistance (Ohm Law):


  • R = Resistance in Ohm.
  • I = Current in Amperes.
  • V = Voltage.


How to convert volts to Resistance in 1 step only:

How to convert volts to Resistance in 1 step only

Step 1:

To convert from volts to resistance, only the voltage between the current must be divided with the formula of the law of ohm.

For example, if you have a server with a voltage of 12V DC and an amperage of 0.55Amp, to know the resistance you must divide 12 between 0.55, the result will be: 21.8Ohm. Formula: 12 / 0.55 = 21.8 ohm.


Examples for conversions from volts to resistance:

Example 1:

A DC motor for a remote control car has a voltage of 14.5V and an amperage of 0.25A, what would be the resistance of the DC motor of this car to remote control ?.

Answer: // To know the answer you must divide the voltage between the current in the following way: 14.5V / 0.25A = 58ohm.

Example 2:

An ebook or e-reader has a voltage of 8.2V and an amperage of 2.3Amp, which is the resistance of the electronic equipment of the ebook ?.

Answer: // To make the conversion, the voltage must be divided between the amperes, as indicated by the ohm law as follows: 8.2V / 2.3A = 3.5 ohm.

Example 3:

A portable computer has a voltage of 8.8 V and 3.3 Amp, what will be the resistance that will have the electronic equipment of the computer ?.

Answer: // It’s easy you just have to divide the voltage between the amperage as indicated in the formula: 3.5V / 2.4A, which will result in: 2.6 ohm.


Table of volts to resistance (Amperes: 10Amp):

How many volts are: Equivalence in resistance (Ohm)
1.1 Volts 0.1 Ohm
1.7 Volts 0.1 Ohm
2.3 Volts 0.2 Ohm
2.9 Volts 0.2 Ohm
3.5 Volts 0.3 Ohm
4.1 Volts 0.4 Ohm
4.7 Volts 0.4 Ohm
5.3 Volts 0.5 Ohm
5.9 Volts 0.5 Ohm
10.6 Volts 1.0 Ohm
20.8 Volts 2.0 Ohm
30.2 Volts 3.0 Ohm
40.3 Volts 4.0 Ohm
50.7 Volts 5.0 Ohm
60.1 Volts 6.0 Ohm
70.5 Volts 7.0 Ohm
80.4 Volts 8.0 Ohm
90.6 Volts 9.0 Ohm
100.8 Volts 10.0 Ohm
110.9 Volts 11.0 Ohm
120.2 Volts 12.0 Ohm
130.6 Volts 13.0 Ohm
140.3 Volts 14,0 Ohm
150.8 Volts 15,0 Ohm
160.3 Volts 16.0 Ohm
170.1 Volts 17.0 Ohm
180.2 Volts 18.0 Ohm
190.0 Volts 19.0 Ohm
200.0 Volts 20.0 Ohm

Note: The changes of volts to resistance of the previous table were made taking into account a 10V amperage. For different variables you should use the calculator that appears at the beginning.


How to use the calculator:

You must enter the voltage and amperage, then just click on calculate, and as a result you will have resistance.

Rate conversion of volts to resistance (Ohm Law):  [kkstarratings]