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Increase Amplifier Power and Volume Calculator

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How much do you need to increase the gain of an amplifier to make it sound twice as loud: 3dB, 6db or 10 dB?

This amplifier power and volume calculator will help you understand that doubling the amplifier power does not double the sound pressure level (SPL) or the perceived loudness.

You can also use this amplifier power and volume calculator to see what effect a bigger amplifier may or may not have on the perceived volume.

Note: the calculator is best viewed in landscape mode on phones and small screens

For an explanation of these results, see the article on Double Amplifier Power does not Double the Volume.

For those who need to know, the formulas used for these calculations are:

$\large Decibel\ Gain = {10\times Log_{10}\left(\frac{final\, power}{initial\, power}\right)}$

$\large Power\ Gain = {\frac{final\, power}{initial\, power}}$

$\large Sound\ Pressure\ Level = {10^\frac{dB\,Gain}{20}}$

$\large Perceived\ Loudness\ Level = {2^\frac{dB\,Gain}{10}}$

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Reader's Feedback

Linda H

Your clear and non-technical explanations were life saving to an almost-80 grandma! Thanks!

Linda H

USA

Geoff the Grey Geek

2020-11-16T06:36:45+10:00

Linda H

USA

Your clear and non-technical explanations were life saving to an almost-80 grandma! Thanks!

https://geoffthegreygeek.com/testimonials/linda-h/

Marc

Hi Geoff!!
WOW, what a wealth of knowledge you are! Thank you for sharing your expertise! and THANK YOU for making this project a huge success!! I couldn't be more pleased with the sound and I am REALLY happy knowing that it is wired safely!!

Marc, USA

Geoff the Grey Geek

2015-01-12T08:53:41+10:00

Marc, USA

Hi Geoff!! WOW, what a wealth of knowledge you are! Thank you for sharing your expertise! and THANK YOU for making this project a huge success!! I couldn't be more pleased with the sound and I am REALLY happy knowing that it is wired safely!!

https://geoffthegreygeek.com/testimonials/marc/

Matt Bunnell (Indianapolis)

Thank You Geoff!
This article demystified microphone sensitivity for me in a big way and helped me understand the concept much better.

Matt B,

Indianapolis

Geoff the Grey Geek

2014-12-02T13:11:40+10:00

Matt B,

Indianapolis

Thank You Geoff! This article demystified microphone sensitivity for me in a big way and helped me understand the concept much better.

https://geoffthegreygeek.com/testimonials/matt-bunnell-indianapolis/

Arnita

Thank you very much for your help.
I wonder why the manufacturers don't tell you this in the manual. My mom said to thank you also, she said now she won't have to pull out her hair. Keep up the good work, this is a great site.

Arnita C,

Baltimore, Maryland, USA

Geoff the Grey Geek

2014-11-11T20:38:55+10:00

Arnita C,

Baltimore, Maryland, USA

Thank you very much for your help. I wonder why the manufacturers don't tell you this in the manual. My mom said to thank you also, she said now she won't have to pull out her hair. Keep up the good work, this is a great site.

https://geoffthegreygeek.com/testimonials/arnita/

Bob Johnson

Geoff, you have been a GOD SEND with your technical advice!
Our church congregation THANKS you!
Grace and Peace.

Bob J,

Bruce WI, USA

Geoff the Grey Geek

2014-11-11T20:21:29+10:00

Bob J,

Bruce WI, USA

Geoff, you have been a GOD SEND with your technical advice! Our church congregation THANKS you! Grace and Peace.

https://geoffthegreygeek.com/testimonials/bob-johnson/

Avril

Thanks for your help - the husband had it plugged into the wrong socket!

Name withheld

Geoff the Grey Geek

2014-11-11T20:02:57+10:00

Name withheld

Thanks for your help - the husband had it plugged into the wrong socket!

https://geoffthegreygeek.com/testimonials/avril/

Carole

Thank you so much for your reply!
I can't thank you enough for getting back to me - it's really kind of you - I have asked so many people and sent emails and had no replies from anyone except you!!

Carole M, UK

Geoff the Grey Geek

2014-11-11T19:57:58+10:00

Carole M, UK

Thank you so much for your reply! I can't thank you enough for getting back to me - it's really kind of you - I have asked so many people and sent emails and had no replies from anyone except you!!

https://geoffthegreygeek.com/testimonials/carole/

Paula

Thank you for your advice. I truly appreciate your website and your help.

Paula,

Lockport, NY, USA

Geoff the Grey Geek

2014-11-11T19:51:50+10:00

Paula,

Lockport, NY, USA

Thank you for your advice. I truly appreciate your website and your help.

https://geoffthegreygeek.com/testimonials/paula/

Chris R

Thank you so much Geoff for all your patience and support, it is very very much appreciated.
Kind regards,

Chris R,

London, UK

Geoff the Grey Geek

2014-11-11T19:40:44+10:00

Chris R,

London, UK

Thank you so much Geoff for all your patience and support, it is very very much appreciated. Kind regards,

https://geoffthegreygeek.com/testimonials/3715/

Kim

Thank you SO much Geoff!
(...and thank you on behalf of the students who will be able to hear me in the future!)

Kim,

Los Angeles, CA, USA

Geoff the Grey Geek

2014-11-11T19:35:09+10:00

Kim,

Los Angeles, CA, USA

Thank you SO much Geoff! (...and thank you on behalf of the students who will be able to hear me in the future!)

https://geoffthegreygeek.com/testimonials/3714/

Geoff the Grey Geek

Increase Amplifier Power and Volume Calculator

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