Definition of Series/Parallel Resistor Calculator
Series/Parallel Resistor Calculator contains 2 resistance calculators, including Parallel resistor calculation tool (namely parallel resistance calculator) and series resistor calculating tool ( aslo namely series parallel circuit calculator). The parallel resistor calculator help you to compute the total equivalent resistance of resistors in parallel, whereas the series resistor calculator to calculate the resistor values for resistors in series.
Resistors in parallel
When two resistors share the same two nodes, they are in parallel. In this configuration, the voltage drop across each resistor is the same. The current now has several paths and can vary depending on which resistor you use. The total resistance of parallel resistors is equal to the reciprocal of each resistor's value.
Parallel Resistor Calculator
The parallel resistors calculator makes it simple to determine the resistance of two resistors in parallel without having to write everything down or use a calculator of any type.
Understanding how to compute the values for series and parallel resistors is crucial to understanding how electrical and electronic circuits function. In electrical and electronic circuit design, these notions are second nature.
Example of calculating parallel resistance
Establish the values of resistance for all resistors connected in parallel. For example, you can use two resistors of 3Ω, 6Ω, respectively.
Input these values in the series resistor calculator and get the result.
In this example, 1/R = 1/3 +1/6, hence 1/R = 1/2Ω, R=2Ω. Notice that the equivalent resistance is lower than any of the individual values for resistors in series.
Parallel Resistor Formula
The standard formula for calculating the total resistance for a number of resistors in parallel is given below. Using this resistor in parallel formula, it is very easy to calculate the total equivalent resistance of resistors in parallel.
where:
RR is the equivalent parallel resistance
R1, R2, ..., Rn are the resistances of individual resistors numbered 1, 2, ..., n.
We can consider these parallel resistors as a single resistor with a value of 
How to calculate parallel resistance
Through the above parallel resistance formula, you know how to calculate resistance in a parallel circuit easily. However, there is much easier way to calculate parallel resistor resistance, that is using Utmel Parallel Circuit Calculator(also namely total resistance in a parallel circuit calculator). Just need to enter the parallel resistance values of all resistors in parallel circuit and then you will get the total resistance value automatically.
Calculating the equivalent resistance (REQ) of parallel resistors by hand is time-consuming. This tool was created to assist you in rapidly calculating the equivalent resistance of up to ten parallel resistors. Simply define the number of parallel resistors and their resistance values to utilize it. If you have more than six resistors, just use the calculator to calculate the equivalent resistance of the first six, then enter that value into R1 and add values for R7, R8,..., R11 into the R2, R3,..., R10 input sections of the calculator.
When two identical resistors are connected in parallel, the equivalent resistance is simply calculated: it is half of the individual resistance. This comes in helpful when you require a certain resistance value but don't have the right part on hand. You can use two 1 k resistors in parallel, for example, if you know you need roughly 500 to obtain the necessary brightness out of an LED circuit.
Keep in mind that adding resistors in parallel has no effect on the current flowing through individual resistors since the voltage between the resistors' terminals is unaffected. The overall current produced by the power supply changes, not the current via a single resistor.
Resistors in Series
When resistors are connected in a single line, they form a series circuit. The current flowing through all of the resistors in this chain is the same. Since the current flowing through the first resistor has only one direction through the subsequent resistors in the chain, this is the case. The total resistance of the chain must equal the number of each resistor's value.
This entire chain of resistors can be treated as a single resistor with a value of 
Series Resistor Calculator
The total resistance value for all resistors linked in series is calculated using the series resistance calculator. Simply multiply the number of resistors in the first column by the number of resistors in the second column, and then input the values of each resistor in the second column, selecting the appropriate unit of resistor value in, K, or M.
A series circuit is one in which the same amount of current flows through all of the resistors at the same time. As illustrated in the image above, n resistors are linked in series to ensure that the same current goes through each one and that the overall resistance equals the sum of all the resistors in the series.
Example of calculating series resistance
Establish the values of resistance for all resistors connected in series. For example, you can use three resistors of 3Ω, 6Ω, and 8Ω, respectively.
Input these values in the series resistor calculator and get the result.
In this example, R = 3 + 6 + 8, hence R = 17Ω. Notice that the equivalent resistance is higher than any of the individual values for resistors in series.
Conclusion
In conclusion, resistors in series are identical to a single resistor with a resistance equal to the number of each individual resistor's resistance. Parallel resistors, on the other hand, produce an equal resistance that is often lower than the resistance of each individual resistor. This makes sense if you think about it: A certain amount of current flows when a voltage is applied to a resistor. When you connect a second resistor in series with the first, you've effectively created a new channel into which more current will flow. The overall current flowing from the power supply would be at least marginally higher than the current through the single resistor, regardless of how large the second resistor is. The average resistance must be lower if the total current is higher.
More Resistor Calculators
Ohms Law Calculator - to calculate resistance, current, voltage, and power.
SMD Resistor Code Calculator - to determine the value of any SMD resistor with 3 or 4 digit code.
Resistor Color Code Calculator - to find the tolerance and resistance values for through hole resistors with 4, 5 and 6 band color codes.
Series and Parallel Capacitor Calculator - to calculate the total capacitance of several capacitors connected in series or parallel.
Circuit Current Calculator - A perfect resistor current calculator to calculate the current flowing through each of the circuit's branches.
