RC Circuit

Content rating
Everyone
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Fast performance stands as the main highlight of RC Circuit. Peter Ho delivers the ultimate system for APPzone fans. Find extra details via Tools.

Simple And Quick This App RC Circuit

This app is used to calculate the RC charging circuit and RC filter. It is suitable for hobbyist or electronic engineers.


Features:
1. Calculate time constant by R and C
2. Calculate between time constant and % of charging
3. Calculate cutoff frequency of low-pass filter/ high-pass filter by resistor and capacitor values
4. To find out combinations of resistance and capacitance making a desired time constant
5. To find out combinations of resistance and capacitance making a desired cutoff frequency
6. Save all combinations in a CSV (Excel) file


Features in PRO version only:
1. No Ads
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.
List R, C making desire time constant / cutoff frequency
Updated on
Jul 27, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    about how developers declare sharing
  • No data collected
    about how developers declare collection

Ratings and reviews

230 reviews
Shyamal Kumar Biswas
March 10, 2021
Useless. You can't select anything but the frequency. And it provides impossible values for resistors. 1 ohm is not a feasible option to make a RC high pass filter. At least users must have the option to chose two things, - frequency plus either resistance or capacitance. And there are a lot of websites available for free to calculate these values extensively. No need to purchase Pro.. 😎
1 person found this review helpful
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Peter Ho
March 10, 2021
The main purpose of the app to find out all combinations of R and C. If I want to build a 10k RC HPF. You will get 1.6k ohm & 10nF. If you do not have 1.6k ohm on hand, you can select another combination R & C values. We think that this approach is more practical !!!
electro kirana
April 18, 2025
Great app to calculate cut off frequency
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Peter Ho
April 19, 2025
Thank you for your best review and encouraging support! I'm very glad that you like the app. Please recommend the app to your friends. Don't hesitate to send me a note at [email protected] if you have any queries or suggestions.
Rasdi Armadi
December 15, 2020
Thank you,Mr.Ho your app is very useful for me to make my own headphone amplifier
1 person found this review helpful
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What’s new

3.0.20
- Fix minor bugs