Series/Parallel Resistors

Peter Ho Tools In-app purchases Contains ads

Find out combination of resistors in series/parallel making a desired resistance

Rating: 4.3; 448 ratings
Downloads: 115K+; on Google Play
Price: Free; In-app purchases
Updated: Jul 27; 2026 · v4.0.20

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About Series/Parallel Resistors

When you do not have an exact resistor value in building a circuit, you need to combine two resistors either in series or in parallel. This app is used to find out all the combinations of these resistors making a desired resistance.
This app is suitable for hobbyist or electronic engineers.

Features:
1. Calculate resistance of 2 resistors in series / parallel (equivalent resistance)
2. To find out combinations of 2 resistors in series / in parallel making a desired resistance
3. Save all combinations in a CSV (Excel) file

Features in PRO version only:
1. No Ad
2. No limitation

Note :
1. For those who need support please email to the designated email.
Do NOT use either the feedback area to write questions, it is not appropriate and that is not guaranteed that can read them.

What’s new

Version 4.0.20 · Updated July 27, 2026

4.0.20 - Fix minor bugs

User reviews

Raj Gopal Menon

Simmmmple!!

Tariqul Islam

it's so good app thanks for that

A G

nice app, thanks bro N sist

Paul Lea

Very Handy

Francisco Adrovel

Excellent

13 gallows

good

App details

Series/Parallel Resistors is a free Tools app for Android with 100,000+ installs on Google Play and a 4.3/5 average rating from 448 ratings. It was released on December 30, 2013 and last updated on July 27, 2026. It's developed by Peter Ho. It requires Android 6.0 or later. The app contains ads and offers in-app purchases.

Category: Tools
Rating: 4.3 / 5 (448)
Installs: 115,585
In-app purchases: Yes
Ads: Contains ads
Version: 4.0.20
Size: 3.1M
Requires Android: 6.0
Content rating: Everyone
Released: December 30, 2013
Last updated: July 27, 2026
Developer: Peter Ho

View on Google Play

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