All Free Audio & Music Calculators
Browse all 113 free calculators across 17 categories. Every tool uses accurate audio formulas and is completely free to use.
Calculate decibel levels, sound wavelengths, room acoustics, reverb times and noise reduction values.
Decibel Calculator
Add, subtract and compare decibel levels with this free calculator. Combine multiple sound sources and calculate dB change with distance.
Sound Wavelength Calculator
Calculate the wavelength of any sound wave from its frequency and air temperature. Essential tool for acoustics and speaker placement.
Room Acoustics Calculator
Estimate room modes, resonant frequencies and key acoustic properties from room dimensions. Free online room acoustics calculator.
Reverb Time Calculator
Calculate RT60 reverberation time using the Sabine and Eyring equations. An essential tool for studio and live room acoustic design.
Absorption Coefficient Calculator
Calculate total sound absorption and average absorption coefficient for any room. Plan your acoustic treatment for studios and venues.
Sound Pressure Level Calculator
Convert between sound pressure in pascals and sound pressure level (SPL) in decibels. Essential everyday reference for audio engineers.
Frequency Calculator
Convert between frequency, wavelength and period for any sound wave. A useful tool for acoustics, audio engineering and speaker design.
Standing Wave Calculator
Find standing wave frequencies and room modes for rectangular rooms. Identify problematic resonances for acoustic treatment planning.
Diffusion Calculator
Calculate sound diffuser well depths and dimensions for target frequencies using QRD and PRD designs. Free acoustic diffusion tool.
Noise Reduction Calculator
Calculate noise reduction between adjacent rooms based on wall construction, transmission loss and absorption. Free online calculator.
Room Treatment Cost Calculator
Calculate acoustic treatment quantities and costs for studios and rooms including absorption panels, bass traps, diffusers and DIY vs commercial pricing.
Diffuser Calculator
Calculate QRD diffuser well depths from prime number sequence for a target frequency range.
BPM, key transposition, intervals, chords, scales, tempo and tuning calculators for musicians.
BPM Calculator
Tap to detect BPM or convert between beats per minute and milliseconds per beat. Free online tempo detection tool for musicians and DJs.
Key Transposition Calculator
Transpose chords and notes between any musical keys instantly. Free online key transposition calculator for musicians and producers.
Interval Calculator
Find the musical interval between any two notes with semitone count, frequency ratio and cents. Free interval calculator for musicians.
Chord Calculator
Build chords from any root note and view the notes, intervals and frequency ratios. Free online chord building calculator for musicians.
Scale Calculator
Generate musical scales from any root note including major, minor, pentatonic, blues and modal scales. Free online scale calculator.
Tempo Calculator
Convert BPM to note durations in milliseconds for setting delay, reverb, LFO and other tempo-synced effects. Free online calculator.
Time Signature Calculator
Calculate bar lengths, beat durations and total song duration from any time signature and BPM. Free online music timing calculator.
Metronome Calculator
Calculate beats per bar, subdivision timings and practice tempo progressions for systematic musical practice. Free online calculator.
Note Frequency Calculator
Find the exact frequency in Hz of any musical note in any octave using equal temperament tuning. Free online note frequency calculator.
Tuning Calculator
Calculate note frequencies for equal temperament, just intonation and Pythagorean tuning systems with adjustable A4 reference pitch.
Sample rate, bit depth, file size, headroom, gain staging and recording time calculators.
Sample Rate Calculator
Calculate maximum reproducible frequency (Nyquist) and convert between common sample rates for digital audio. Free online calculator.
Bit Depth Calculator
Calculate dynamic range, signal-to-noise ratio and quantisation levels from bit depth. Essential for digital audio recording decisions.
Audio File Size Calculator
Estimate uncompressed audio file sizes for WAV, AIFF and other recording formats based on sample rate, bit depth and channel count.
Track Count Calculator
Calculate storage space and bandwidth requirements for multitrack recording sessions based on track count, sample rate and bit depth.
Headroom Calculator
Calculate available headroom from peak level and convert between dBFS and dBu scales. Essential for professional recording and mixing.
Gain Staging Calculator
Calculate optimal gain settings through your recording signal chain to maximise signal-to-noise ratio and headroom. Free calculator.
Preamp Gain Calculator
Calculate the required preamp gain from microphone sensitivity and your target recording level. Optimise your recording signal chain.
Recording Time Calculator
Calculate available recording time from storage capacity, sample rate, bit depth and number of tracks. Free online audio calculator.
Audio Latency Budget Calculator
Calculate total round-trip audio latency from buffer size, sample rate, A/D and D/A converter latency and plugin count with usability ratings.
Mic Placement Calculator
Calculate optimal microphone placement distance based on source type, polar pattern and room size.
Vocal Booth Calculator
Calculate acoustic treatment panels and bass traps needed for a vocal booth based on dimensions.
Phantom Power Calculator
Calculate current draw and voltage drop for phantom-powered microphone setups.
Room Reverb Time Calculator
Calculate RT60 reverberation time, early reflection delay and optimal reverb plugin settings from room dimensions, surface material and furnishing level.
Pan law, EQ frequency, compression ratio, stereo width and phase calculators for mixing engineers.
Pan Law Calculator
Calculate left and right channel levels for different pan law settings and compare -3dB, -4.5dB and -6dB pan law curves in detail.
Bus Routing Calculator
Calculate level summation when combining multiple channels to a mix bus. Understand coherent and incoherent signal summing in depth.
Aux Send Calculator
Calculate wet/dry ratios and effect send levels for parallel processing chains. Essential for reverb, delay and compression sends.
EQ Frequency Calculator
Find EQ centre frequency, bandwidth and Q factor. Convert between octave width and Q values for precise parametric EQ adjustments.
Compression Ratio Calculator
Calculate output level, gain reduction and makeup gain for any compression ratio, threshold and input signal level. Free calculator.
Sidechain Calculator
Calculate sidechain filter frequencies and ducking timing synced to your track BPM. Essential for kick-triggered compression in mixes.
Stereo Width Calculator
Calculate Mid/Side levels from stereo width percentage and vice versa. See how stereo width adjustments affect mono compatibility.
Phase Calculator
Calculate phase offset in degrees and milliseconds between two signals at any frequency. Identify comb filtering and cancellation issues.
Loudness Target Calculator
Calculate target LUFS levels for different platforms including Spotify, YouTube, Apple Music and broadcast.
Speaker power, impedance, SPL, crossover, amplifier sizing and cabinet design calculators.
Speaker Power Calculator
Calculate required amplifier wattage for a target SPL at a given distance from the speaker. Free online PA system design calculator.
Speaker Impedance Calculator
Calculate total load impedance for series, parallel and series-parallel speaker wiring configurations. Free online audio calculator.
SPL Calculator
Calculate sound pressure level at any distance from speaker sensitivity and amplifier power. Essential tool for PA and event planning.
Crossover Calculator
Calculate capacitor and inductor values for passive speaker crossover networks at various filter orders. Free online audio calculator.
Amplifier Calculator
Calculate required amplifier power, headroom margin and speaker matching for PA systems and studio monitors. Free online calculator.
Speaker Wire Calculator
Calculate the speaker wire gauge (AWG) needed for your cable length, speaker impedance and acceptable power loss. Free calculator.
Cabinet Volume Calculator
Calculate sealed and ported speaker cabinet internal volume from Thiele-Small parameters. Free online speaker cabinet design calculator.
Port Tuning Calculator
Calculate port tube length and diameter for a bass reflex speaker cabinet at your target tuning frequency. Free online calculator.
Speaker Array Calculator
Calculate delay times and level adjustments for distributed speaker arrays to achieve coherent sound coverage across large venues.
Coverage Calculator
Calculate speaker coverage area and overlap from dispersion angle and throw distance. Plan PA system layout for full venue coverage.
Speaker Wire Gauge Calculator
Calculate minimum wire gauge based on speaker impedance, amplifier power and cable run length.
Subwoofer Box Calculator
Calculate sealed or ported subwoofer enclosure volume from driver Thiele-Small parameters.
Impedance matching, sensitivity, power requirements and DAC/amp calculators for headphones and IEMs.
Impedance Matching Calculator
Calculate damping factor and output impedance matching for headphones and amplifiers. Verify the 1/8 rule for optimal amplifier pairing.
Headphone Sensitivity Calculator
Convert between dB/mW and dB/V headphone sensitivity ratings. Essential for accurately comparing specs from different manufacturers.
Headphone Power Calculator
Calculate the power and voltage needed to drive your headphones to a target listening level. Check whether your amp is powerful enough.
DAC Calculator
Calculate DAC output voltage, dynamic range and whether it can drive your headphones to adequate listening volume. Free online tool.
Headphone Amplifier Calculator
Determine if your headphone amplifier can deliver enough power and voltage swing for your headphones at your target listening level.
Headphone Cable Calculator
Calculate headphone cable resistance and its effect on frequency response, damping factor and overall audio signal quality and clarity.
Driver Size Calculator
Compare headphone driver diameters, calculate effective cone areas and understand their effect on frequency response and bass extension.
Frequency Response Calculator
Convert between frequency response specifications and calculate bandwidth in octaves, decades and geometric centre frequency values.
BPM sync, harmonic mixing, delay time, LFO rate, loop length and set time calculators for DJs and producers.
BPM Sync Calculator
Calculate the pitch adjustment percentage needed to sync two tracks at different BPMs. Essential for DJs performing seamless beatmatching.
Harmonic Mixing Calculator
Find compatible keys for harmonic mixing using the Camelot wheel system. Essential tool for DJs creating seamless musical transitions.
Loop Length Calculator
Calculate loop length in milliseconds and samples from BPM and bar count. Essential tool for precise looping in DAWs and samplers.
Delay Time Calculator
Calculate delay times in milliseconds synced to BPM for all note values including dotted and triplet divisions. Free producer tool.
LFO Rate Calculator
Calculate LFO rate in Hz synced to your BPM for all note divisions including dotted and triplet values. Free online producer tool.
Sample Chop Calculator
Calculate chop points in samples and milliseconds for evenly dividing any loop. Ideal for MPC, Maschine and DAW sampling workflows.
Vinyl RPM Calculator
Calculate playing time, groove spacing and frequency response for vinyl records at 33 and 45 RPM. Free online vinyl record calculator.
DJ Set Time Calculator
Estimate how many tracks you need for a DJ set based on your average song length, total set duration and your preferred mixing style.
Sidechain Calculator
Calculate attack and release times for sidechain compression based on BPM and ducking style.
Cable length, signal loss, impedance, balanced vs unbalanced and cable gauge calculators.
Cable Length Calculator
Calculate the maximum cable length before signal degradation for XLR, TRS, TS and other audio cable types. Free online calculator.
Signal Loss Calculator
Calculate audio signal attenuation in dB over a cable run based on cable type, length and frequency. Free online audio calculator.
Cable Impedance Calculator
Calculate the characteristic impedance of audio cables from conductor diameter, spacing and dielectric constant. Free online tool.
Connector Calculator
Reference guide for audio connector pinouts, wiring diagrams and signal levels covering XLR, TRS, TS, RCA and more. Free online tool.
Balanced vs Unbalanced Calculator
Compare noise rejection and maximum cable run lengths for balanced versus unbalanced audio connections. Free online comparison tool.
Snake Calculator
Calculate audio snake requirements from channel count, cable run length and connector types for live sound and studio installations.
Patch Bay Calculator
Calculate patch bay size, normalling configuration and total cable requirements for professional recording studio wiring projects.
Cable Gauge Calculator
Calculate the required cable gauge (AWG) for speaker cables based on your cable length, speaker impedance and acceptable power loss.
Cable Loss Calculator
Calculate signal loss over audio cable runs including resistance loss, capacitance effects, noise floor impact, impedance and recommended maximum lengths.
Patch Cable Calculator
Calculate total patch cable length and count needed for a pedalboard or rack setup.
Room dimensions, monitor placement, bass traps, acoustic panels, reflection points and isolation calculators.
Room Dimension Calculator
Check room dimension ratios against recommended values for even modal distribution in your studio. Free online room ratio calculator.
Monitor Placement Calculator
Calculate optimal studio monitor speaker positions using the equilateral triangle method for accurate stereo imaging in your studio.
Bass Trap Calculator
Calculate bass trap thickness and effective low-frequency absorption range for room corners. Essential for studio acoustic treatment.
Acoustic Panel Calculator
Calculate the number and size of acoustic treatment panels needed for your studio based on room dimensions and target RT60 reduction.
Reflection Point Calculator
Find first reflection points on your studio walls and ceiling for precise acoustic treatment panel placement. Free online calculator.
Isolation Calculator
Calculate sound isolation rating (STC/Rw) from wall construction layers and total mass. Estimate noise reduction between studio rooms.
Desk Height Calculator
Calculate the optimal studio desk height and monitor screen position for ergonomic comfort in your recording or mixing studio setup.
Power Consumption Calculator
Calculate total power draw of your studio equipment and the required circuit capacity. Plan your recording studio electrical needs.
Acoustic Treatment Calculator
Calculate acoustic treatment coverage for studios and rooms including absorption panels, bass trap corners, diffuser panels, first reflection points and cost estimate.
Headphone Amp Calculator
Calculate headphone amplifier power, voltage and current requirements based on impedance and sensitivity.
Room mode analysis, resonance identification and acoustic treatment calculators for studios and listening rooms.
Buffer size, latency, streaming bitrate and digital audio processing calculators.
Polar pattern analysis, placement, sensitivity and microphone selection calculators.
Microphone Polar Pattern Calculator
Calculate off-axis rejection, pickup area and null points for cardioid, supercardioid, hypercardioid, figure-8 and omnidirectional patterns.
Microphone Proximity Calculator
Calculate signal level at the mic, proximity effect bass boost, recommended preamp gain and noise floor margin from source SPL, mic sensitivity, distance and polar pattern.
dB conversions, frequency-to-note, wavelength, speed of sound, power, voltage and Ohm's law calculators.
dB Conversion Calculator
Convert between dBu, dBV, dBFS, dBm and voltage or power values instantly. An essential daily reference calculator for audio engineers.
Frequency to Note Calculator
Find the closest musical note to any frequency with cents deviation from equal temperament. Free online audio reference calculator.
Wavelength Calculator
Calculate the wavelength of any sound wave at a given frequency and air temperature. Useful for speaker placement and room acoustics.
Speed of Sound Calculator
Calculate the speed of sound in air at any given temperature and humidity level. Useful for delay time alignment and acoustic design.
Audio Power Calculator
Calculate audio power from voltage and impedance, or find voltage from power and impedance. Essential for amplifier and speaker work.
Voltage Calculator
Calculate audio signal voltage from dBu or dBV decibel values and convert back to dB. Essential reference for gain staging and setup.
Ohm's Law Calculator
Calculate voltage, current, resistance and power for audio circuits using Ohm's law. Free online audio electronics reference tool.
Signal Chain Calculator
Calculate cumulative gain, noise floor and signal-to-noise ratio through a chain of audio components. Free online audio calculator.
PA system sizing, speaker placement, delay timing and live sound reinforcement calculators.
PA Speaker Calculator
Calculate PA system sizing for venues including recommended wattage, number of tops and subs, speaker placement distances and delay timing. Free online calculator.
Stage Monitor Calculator
Calculate monitor wedge, IEM transmitter and mix send requirements for live sound performances.
BPM-synced delay times, LFO rates, modulation timing and synthesiser parameter calculators.
Cartridge alignment, turntable setup, vinyl playback and record care calculators.
Useful reference guides and charts for audio formats, cables, decibel levels and note frequencies.
Audio File Format Comparison
Compare WAV, FLAC, MP3, AAC and more for sample rates, compression and file sizes.
Audio Cable & Connector Reference
Guide to XLR, TRS, RCA, Speakon and more with pin configurations and maximum cable lengths.
Decibel Reference Levels
Common sounds and their dB levels from 0 dB to 194 dB with exposure time limits.
Musical Note Frequency Chart
Note frequencies from A0 to C8 based on A440 standard tuning for all 88 piano keys.
Why Use AudioCalcs?
Every calculator on this page is completely free, requires no signup, and works on any device. All tools use accurate audio engineering formulas and established acoustic standards.
Whether you're setting up a studio, mixing a track, designing a PA system or just learning music theory, AudioCalcs helps you get accurate results quickly. No apps to install, no accounts to create.