Calculate speaker sizing, acoustic measurements, signal levels, and audio equipment specs — all for free. No signup, no guesswork.
Room mode, RT60, acoustic panel, bass trap, speaker placement, and noise isolation calculators.
Speaker box, port tuning, crossover, amplifier power, and subwoofer enclosure calculators.
Decibel conversion, impedance matching, voltage dividers, cable capacitance, and filter calculators.
Delay time, sample rate, mic distance, headroom, frequency/note conversion, and loudness calculators.
Calculate axial, tangential, and oblique room resonance modes based on room dimensions. Identifies problematic standing wave frequencies for acoustic treatment planning.
Calculate reverberation time (RT60) using the Sabine equation. Determines how long sound takes to decay by 60 dB based on room volume and total absorption.
Calculate optimal speaker and listening positions using the 38% rule and equilateral triangle geometry for stereo monitoring.
Calculate optimal sealed and ported enclosure volume for a speaker driver based on Thiele-Small parameters.
Calculate passive crossover component values (inductors and capacitors) for 1st, 2nd, and 3rd order Butterworth crossover networks.
Calculate the amplifier power needed to achieve a target SPL at a given distance, accounting for speaker sensitivity and headroom.
Convert between dBu, dBV, dBFS, dBSPL, watts, and voltage. Universal decibel reference converter for audio engineering.
Calculate total impedance for series and parallel speaker wiring configurations with power distribution analysis.
Calculate resistor and capacitor values for first-order high-pass and low-pass RC filters with cutoff frequency and rolloff characteristics.
Convert BPM to millisecond delay times for note values including dotted and triplet variations. Essential for syncing delays to tempo.
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