Is this calculation free and private?

Yes, 100% of calculations execute locally in your web browser. No inputs or personal data are stored or transmitted.

What does the Acoustic Room Reverb RT60 Calculator give me?

It works out Room Volume, Total Boundary Surface, Total Absorption and Estimated RT60 Reverb Decay, updating live as you change the inputs.

What do I need to enter?

Just Room Length, Room Width, Ceiling Height and Average Surface Absorption. Every field has a sensible default you can start from.

Is my data uploaded anywhere?

No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.

Does it work on a phone?

Yes. The layout adapts to small screens and needs no app or signup.

Acoustic Room Reverb RT60 Calculator

Estimate room reverberation decay time (RT60 in seconds) using Sabine formula based on room dimensions and surface absorption Sabins.

100% free
Private in browser
No signup
No watermarks

Room Length (Feet)

Room Width (Feet)

Ceiling Height (Feet)

Average Surface Absorption (%)

Room Volume (Cubic Feet)

2,700

Total Boundary Surface (Sq Ft)

1,230

Total Absorption (Sabins)

246

Estimated RT60 Reverb Decay (Seconds)

0.54

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About Acoustic Room Reverb RT60 Calculator

Estimate room reverberation decay time (RT60 in seconds) using Sabine formula based on room dimensions and surface absorption Sabins. Enter Room Length, Room Width and Ceiling Height and the tool works out Room Volume, Total Boundary Surface and Total Absorption straight away. Everything runs in your browser, so your data never leaves your device.

How to use Acoustic Room Reverb RT60 Calculator

Enter Room Length, Room Width and Ceiling Height.
Adjust the remaining options (Average Surface Absorption) to match your case.
Read Room Volume, Total Boundary Surface and Total Absorption in the results panel — copy or download what you need.

Key features

Shows Room Volume (Cubic Feet)
Shows Total Boundary Surface (Sq Ft)
Shows Total Absorption (Sabins)
4 adjustable inputs, results update as you type
No signup, no limits

Frequently asked questions

Is this calculation free and private?: Yes, 100% of calculations execute locally in your web browser. No inputs or personal data are stored or transmitted.
What does the Acoustic Room Reverb RT60 Calculator give me?: It works out Room Volume, Total Boundary Surface, Total Absorption and Estimated RT60 Reverb Decay, updating live as you change the inputs.
What do I need to enter?: Just Room Length, Room Width, Ceiling Height and Average Surface Absorption. Every field has a sensible default you can start from.
Is my data uploaded anywhere?: No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.
Does it work on a phone?: Yes. The layout adapts to small screens and needs no app or signup.

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