Digital tools that do real calculation, not decoration.
Every Studio Music Tools product is built from the same calculation engine used across this whole site — genuinely live, editable spreadsheets and original written guides, not static templates.
Room Mode Calculator
Find every standing wave in your room before you buy a single panel.
A working Excel/Google Sheets calculator that computes every axial, tangential, and oblique room mode in your space, flags clustering and gaps, and shows you exactly which bass frequencies your room is fighting you on.
- Enter length, width, height in meters or feet
- Calculates axial, tangential, and oblique modes up to 300 Hz
- Automatically flags modal clustering (reinforced frequency zones)
- Automatically flags large modal gaps
Speaker Placement Planner
A starting-point speaker and listening position layout in under two minutes.
Enter your room dimensions and get a labeled starting-point layout for your monitors and listening position, an equilateral triangle check, symmetry check, and boundary interference warnings.
- Listening position starting point (labeled heuristic, not a fixed rule)
- Speaker distance from front and side walls
- Equilateral triangle distance calculation
- Symmetry check for your specific room width
RT60 Reverberation Calculator
Sabine-based reverberation time, calculated per frequency band, with a real materials database.
A Sabine-equation RT60 calculator with an editable absorption-coefficient database (14 common surface and treatment materials across 6 octave bands), Schroeder frequency check, and target-range comparison by use case.
- Sabine RT60 calculation: RT60 = 0.161 x V / A
- Per-band calculation at 125/250/500/1000/2000/4000 Hz
- 14-material absorption coefficient reference table, fully editable
- Schroeder frequency + reliability warning for small rooms
Acoustic Treatment Planner
Turn your room's numbers into a starting-point shopping list.
Estimates broadband panel count, first reflection panel placement, bass trap corners, and ceiling cloud recommendation from your room's real dimensions - clearly separated calculation from heuristic recommendation.
- Wall area and volume calculation from your dimensions
- Broadband panel count estimate (editable panel size + coverage target)
- First reflection point priority panels
- Bass trap corner count
Home Studio Acoustic Guide
The full explanation behind every Studio Music Tools calculator, in one guide.
A complete, original written guide covering room modes, SBIR, first reflections, reverberation, absorption, bass trapping, diffusion, speaker placement, listening position, measurement, and treatment strategy - written for producers, not engineers.
- Why small rooms sound problematic
- Room modes explained without the math-class tone
- Speaker Boundary Interference Response (SBIR)
- First reflections and the mirror trick
Studio Acoustic Toolkit
Every Studio Music Tools acoustic calculator, guide, and checklist - the complete system.
The flagship Studio Music Tools product: Room Mode Calculator, Speaker Placement Planner, RT60 Calculator, and Acoustic Treatment Planner spreadsheets, plus the full Home Studio Acoustic Guide, a Measurement Guide, a Studio Setup Checklist, and a fully worked example room - everything in one download at a meaningful discount versus buying each tool separately.
- All 4 calculators (Room Modes, Speaker Placement, RT60, Treatment Planner)
- Complete Home Studio Acoustic Guide (original, written for producers)
- Measurement Guide - how to verify your calculations for real
- Studio Setup Checklist - a step-by-step build-order checklist
Free tools vs. paid products
Free, in your browser
The Room Mode Calculator, Speaker Placement Planner, and RT60 Calculator on /tools are the same calculation engine as the paid spreadsheets, running live on this site. Free to use, no account, no time limit — this isn't a trial.
- Full calculation, not a limited preview
- No download, no offline copy — recalculates each time you visit
- Good for a one-off check or comparing a couple of rooms
Paid products
An editable spreadsheet you keep, plus written guides and planning tools that aren't part of the free site at all.
- Yours to keep — edit, save, and reuse offline in Excel or Google Sheets
- Includes the Acoustic Treatment Planner and full written guide, not available for free
- One-time payment, not a subscription