Audio Calculators
Audio Bitrate Calculator
Calculate uncompressed PCM audio bitrate from sample rate, bit depth, and channel count, with reference bitrates for CD, studio, and hi-res formats compared.
Audio Buffer Latency Calculator
Calculate audio processing latency in milliseconds from buffer size and sample rate for digital audio recording setups.
Audio File Size Calculator
Estimate audio file size for uncompressed PCM or bitrate-based compressed formats from duration, with example sizes for WAV and MP3 at common settings.
Bass Reflex Port Tuning Calculator
Calculate the tuning frequency of a ported (bass reflex) speaker enclosure from port dimensions and box volume.
BPM Tap Tempo Calculator
Determine a song's exact tempo in beats per minute from the number of taps and elapsed time, with typical BPM ranges for common music genres included.
Decibel Calculator
Convert between power or voltage ratios and decibels in either direction, with reference values for doubling power (+3 dB) and voltage (+6 dB) explained.
Delay Time from BPM Calculator
Calculate delay and echo effect times in milliseconds synced to a song's tempo and a chosen musical note division.
Frequency Wavelength Calculator
Convert between sound frequency and wavelength at any air temperature, with a reference table spanning the full audible range from 20 Hz to 20 kHz shown.
MIDI Note Frequency Calculator
Convert a MIDI note number (0-127) to its corresponding frequency in Hertz using the standard equal temperament formula.
Nyquist Frequency Calculator
Calculate the Nyquist frequency, the highest frequency accurately captured at a given digital audio sample rate.
Passive Crossover Frequency Calculator
Calculate the crossover frequency of a passive LC filter network from inductance and capacitance values.
Q Factor Calculator
Calculate the Q factor (quality factor) of an EQ filter or resonant peak from its center frequency and bandwidth.
Reverb Time Calculator
Calculate RT60 reverberation time using either the Sabine or Eyring equation, with an explanation of when each formula gives a more accurate estimate.
Room Acoustics Calculator
Estimate a room's RT60 reverberation time from its dimensions and average absorption coefficient using the Sabine equation, with a full worked example shown.
Room Mode Frequency Calculator
Calculate a room's axial standing wave (room mode) frequencies from a single room dimension.
Speaker Impedance Calculator
Find total speaker impedance for series or parallel wiring configurations, with a reference table of common speaker pairing combinations and their totals.
Speaker SPL from Power Calculator
Calculate a speaker's sound pressure level output from its sensitivity rating and the amplifier power driving it.
Speaker Wire Gauge Calculator
Find the minimum speaker wire gauge needed to keep power loss under a target percentage for a given run distance and impedance, with a copper resistance table.
SPL Distance Calculator
Calculate how sound pressure level (SPL) drops as distance from a sound source increases, using the inverse square law.
Subwoofer Box Volume Calculator
Convert internal or external subwoofer enclosure dimensions into internal air volume in cubic feet, accounting for panel wall thickness on external builds.
Making Sound Measurable
Sound is physical — a pressure wave with a measurable frequency, amplitude, and wavelength — which means recording, mixing, and speaker setup all come down to concrete numbers rather than guesswork. These ten calculators cover the acoustics and audio engineering math behind getting sound right.
Decibels are logarithmic, which is why the scale feels unintuitive at first — conversation at 60 dB carries roughly a thousand times more sound energy than a 30 dB whisper, not just twice as much, and combining two equal 60 dB sources only adds about 3 dB total rather than doubling the number. The Decibel Calculator converts between sound pressure levels and relative loudness so the scale becomes concrete. Prolonged exposure above roughly 85 dB is generally considered a hearing-risk threshold, part of why sustained traffic-level noise is a genuine long-term concern.
Popular Audio Calculators
- Speaker Wire Gauge Calculator — finds the correct wire gauge for a run length and power level to avoid signal loss.
- Room Acoustics Calculator — estimates reverberation and reflection behavior for a room's dimensions and surfaces.
- Subwoofer Box Volume Calculator — calculates the enclosure volume needed for a target driver and tuning frequency.
Working with video or podcast audio? See the Video Calculators, or check instrument-specific tools in Music Calculators.