Rectangular Room Axial Mode Calculator
Estimate the first three axial resonance frequencies along one room dimension.
Your inputs
Calculation results
Formula & assumptions
Axial mode n = n × sound speed/(2 room dimension); rigid parallel walls assumed.
Values use the specified units. Calculations use floating-point arithmetic. Check input measurements and formula assumptions before applying the result.
Compare your scenarios
Save up to five results to compare changes side by side. Scenarios stay in this tab until you clear or reload it.
Using Rectangular Room Axial Mode Calculator
Estimate the first three axial resonance frequencies along one room dimension.
- Enter room dimension, sound speed using the units printed under each field.
- Choose Calculate, or enable live updates. Review the result labels and formula assumptions.
- Save scenarios to compare up to five variations, then copy the report or download JSON or CSV.
Example
Room dimension: 4 meters Sound speed: 343 meters per second First mode · hertz: 42.875 Second mode · hertz: 85.75 Third mode · hertz: 128.625
Questions & answers
What does Rectangular Room Axial Mode Calculator calculate?
Estimate the first three axial resonance frequencies along one room dimension.
Which units should I enter?
Room dimension uses meters. Sound speed uses meters per second. Convert values to these units before calculating.
Which formula does it use?
Axial mode n = n × sound speed/(2 room dimension); rigid parallel walls assumed.
What does the included example show?
Room dimension: 4 meters; Sound speed: 343 meters per second. Result: First mode · hertz = 42.875; Second mode · hertz = 85.75; Third mode · hertz = 128.625.
Can I compare different settings?
Yes. Save a scenario, change the inputs and save another result. Up to five scenarios are compared in this tab; they disappear when you reload or leave.
Can I export the calculation?
Copy the JSON report or download JSON and CSV with inputs, result labels and numeric values. Processing uses local JavaScript; no calculation request is sent to our server. Displayed values use up to 10 significant digits; exports retain JavaScript numeric precision.
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