Converters (Units & Audio)
Instant frequency, audio, and physics unit converters — Hz to kHz, note to frequency, BPM to Hz, dB to amplitude, wavelength calculator, sample rate converter, bitrate calculator, and more. All calculations run locally in your browser.
Available Tools
Hz to kHz Converter
Instantly convert between Hertz and kilohertz with bidirectional input, common frequency presets, and copy-to-clipboard results.
Launch tool →kHz to MHz Converter
Convert kilohertz to megahertz and back with a reference table of common radio bands (AM, FM, shortwave) for quick lookup.
Launch tool →MHz to GHz Converter
Convert megahertz to gigahertz instantly with reference values for WiFi bands, 5G frequencies, Bluetooth, and CPU clock speeds.
Launch tool →Note to Hz (Frequency) Converter
Convert any musical note and octave to its exact frequency in Hz. Adjustable A4 reference tuning, full note-frequency chart, and audio playback.
Launch tool →Hz to Note Converter
Enter any frequency to find the nearest musical note, cent deviation, and octave. Visual piano display and adjustable A4 reference.
Launch tool →Cent to Hz Converter
Convert cents offset from a reference frequency to exact Hz using the formula f = f₀ × 2^(cents/1200). Essential for microtuning and intonation work.
Launch tool →Hz to Cent Converter
Calculate the interval in cents between two frequencies or find how many cents a frequency deviates from the nearest equal-tempered note.
Launch tool →Frequency to Period Converter
Convert frequency (Hz) to time period using T = 1/f. Auto-scales output to seconds, milliseconds, or microseconds with a visual waveform.
Launch tool →Period to Frequency Converter
Convert a time period (s, ms, μs, ns) to frequency in Hz, kHz, or MHz using f = 1/T. Perfect for oscilloscope and timing analysis.
Launch tool →Frequency to Wavelength Converter
Calculate wavelength from frequency using λ = v/f. Choose medium (air, water, steel), adjust temperature, and see results in meters, cm, or feet.
Launch tool →BPM to Hz Converter
Convert beats per minute to frequency in Hz with delay time in ms for syncing LFOs, delays, and reverb pre-delay. Includes note subdivision table.
Launch tool →Hz to BPM Converter
Convert any frequency to beats per minute with equivalent musical tempo markings (Largo, Andante, Allegro, Presto) for quick reference.
Launch tool →Frequency to Energy Converter
Calculate photon energy from frequency using E = hf. Results in electron-volts, joules, and kJ/mol with electromagnetic spectrum position indicator.
Launch tool →Sample Rate Converter
Compare audio sample rates (44.1k, 48k, 96k, 192k) with Nyquist frequencies, aliasing risk assessment, and file size impact estimator.
Launch tool →Bit Depth Calculator
Calculate dynamic range from bit depth (6.02n + 1.76 dB). Compare 8/16/24/32-bit with file size estimates for any sample rate and duration.
Launch tool →MP3 Bitrate Calculator
Estimate audio file size from bitrate and duration, or find required bitrate for a target file size. Supports MP3, AAC, FLAC, and WAV formats.
Launch tool →dB to Amplitude Converter
Convert decibels to linear amplitude with voltage ratio (10^(dB/20)) and power ratio (10^(dB/10)) modes. Shows formula and reference levels.
Launch tool →Amplitude to dB Converter
Convert linear amplitude or voltage ratios to decibels with voltage/power mode toggle. Handles edge cases with clear warnings for zero-amplitude input.
Launch tool →dB to Watt Converter
Convert dBm to milliwatts and dBW to watts for RF power calculations. Includes reference table for common WiFi, cellular, and radio power levels.
Launch tool →Watt to dB Converter
Convert watts or milliwatts to dBm and dBW for amplifier design, speaker system planning, and RF transmission power analysis.
Launch tool →Volume Percentage Calculator
Convert between volume percentage and dB with logarithmic vs. linear curve comparison. See why 50% volume doesn’t mean half the loudness.
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