Audio

Sample Rate Converter Calculator

See how file size changes when you switch between 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz at any bit depth.

Quick Answer

File size = sample rate × bit depth/8 × channels × duration. CD = 44.1 kHz × 16-bit × 2ch ≈ 1411 kbps. Doubling the sample rate doubles the file size at the same bit depth.

Compare Two Rates

Duration (seconds)

3.0 minutes

Bit Depth

Channels

From Rate

To Rate

From

45.42 MB

To

49.44 MB

Difference

+4.02 MB

+8.8%

Size at Every Rate (3.0 min, 24-bit, 2ch)

Sample RateFile SizeTypical Use
22.05 kHz22.71 MBVoice-only podcasts, low-quality
32 kHz32.96 MBDAB radio, MiniDV camcorders
44.1 kHz45.42 MBCD audio, streaming releases
48 kHz49.44 MBVideo production, broadcast standard
88.2 kHz90.84 MBHigh-res audio (CD multiple)
96 kHz98.88 MBHigh-res audio, video post-production
176.4 kHz181.69 MBHi-res audiophile (4× CD)
192 kHz197.75 MBMastering, archival, scientific audio

About This Tool

The Sample Rate Converter Calculator shows how audio file size changes when you switch between common sample rates: 22.05 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz. Pick a duration, bit depth, and channel count, and the tool returns the WAV-equivalent file size at every rate side by side. This is essential planning information for tracking sessions, archive storage, and delivery format choices.

Sample Rate Fundamentals

Sample rate is the number of times per second the audio amplitude is measured during analog-to-digital conversion. A higher sample rate captures higher frequencies (the Nyquist theorem says max representable frequency = sample rate / 2) and produces a more detailed digital approximation of the original waveform. CDs use 44.1 kHz; film and video use 48 kHz; audiophile and mastering work might use 88.2, 96, or even 192 kHz.

The 44.1k vs 48k Divide

The split between 44.1 kHz (music) and 48 kHz (video/broadcast) is purely historical. 44.1 kHz fit nicely on the U-matic videotape format used to master early CDs. 48 kHz was chosen for video because it divides evenly into 24, 25, and 30 fps frame rates. Today the divide persists: Spotify, Apple Music, Tidal, and CD all default to 44.1 kHz. YouTube, Netflix, broadcast TV, and most game audio use 48 kHz. Pick your project rate based on your final delivery target.

When to Go High-Res

Recording at 88.2, 96, or higher captures audio above 24 kHz that humans can't hear directly, but offers practical benefits during processing. Pitch shifting an octave down without aliasing artifacts is easier with high source rates. Time-stretching has more headroom. Anti-aliasing filters can be gentler. The cost: doubled or quadrupled file sizes, more CPU per plugin, longer rendering times. For pop, hip hop, and most commercial music, 48 kHz/24-bit is the sweet spot. For film scoring, classical, and audiophile releases, 96 kHz is common.

The Cost of High Rates

File size scales linearly with sample rate. A 5-minute stereo 24-bit master at 44.1 kHz is about 76 MB. The same content at 96 kHz is 165 MB. At 192 kHz it's 330 MB. Multiply across an entire session of 30+ tracks and storage adds up fast. CPU load also scales — most plugins do twice as much work at 96 kHz vs 48 kHz. SSDs have made high-res sessions practical, but it's still good practice to commit to a rate at the start of a project and stick with it.

Sample Rate Conversion Quality

Converting between sample rates (e.g., from 96 kHz mix to 44.1 kHz delivery) requires resampling. Modern algorithms (iZotope RX, Voxengo r8brain, SoX) produce near-transparent results. Avoid lazy real-time conversions — render through a dedicated SRC tool. Integer-ratio conversions (96 → 48) are slightly easier than non-integer (96 → 44.1), but the audible difference is negligible with quality tools.

Pair With Other Tools

Use our Bit Depth Calculator to compare 16/24/32-bit storage and dynamic range, the Audio File Size Calculator for compressed format estimates, the Audio Bandwidth Calculator for streaming infrastructure planning, the Streaming Audio Quality Calculator to compare delivery bitrates, or the LUFS Calculator for streaming loudness targets.

Frequently Asked Questions

What is sample rate?
Sample rate is how many times per second an analog audio signal is measured (sampled) when converting to digital. CD audio uses 44.1 kHz — 44,100 samples per second. Higher sample rates capture higher frequencies and more detailed waveforms. The Nyquist theorem says you need at least twice the highest frequency you want to preserve, so 44.1 kHz captures up to 22.05 kHz — slightly above human hearing's upper limit (~20 kHz).
Why are 44.1 kHz and 48 kHz both standards?
44.1 kHz emerged from CD audio in the 1980s — the rate fit conveniently on early digital tape formats used to master CDs. 48 kHz became the standard for video and broadcast because it divides evenly into common video frame rates (24, 25, 30 fps). Music streaming and CDs use 44.1; film, TV, and YouTube audio almost always use 48. Convert between them with high-quality SRC software (sample rate conversion).
Should I record at 96 kHz instead of 48?
It depends. 96 kHz captures audio above 24 kHz, which humans cannot hear, but allows steeper anti-aliasing filters and more headroom for pitch shifting and time-stretching. The downside is doubled file sizes and more CPU load. Most modern productions record at 48 kHz, 24-bit and only step up to 88.2 or 96 for orchestral, film, or audiophile work. Going from 24-bit/44.1k to 24-bit/96k roughly doubles storage and CPU.
Does converting from 44.1k to 48k hurt audio quality?
Not significantly with modern algorithms. iZotope, Voxengo, and the SoX algorithms all produce near-transparent conversions when the input was clean to begin with. Avoid casual sample rate conversion in your DAW — instead, render through a dedicated high-quality SRC tool when needed. Going from a non-integer ratio (44.1 to 48) is harder than integer ratios (44.1 to 88.2), but modern tools handle both well.
What's the file size impact of doubling sample rate?
Doubling the sample rate exactly doubles the file size at the same bit depth and channel count. A 5-minute stereo 24-bit file at 44.1 kHz is about 76 MB; at 88.2 kHz it's 152 MB; at 176.4 kHz it's 305 MB. Storage is cheap, but bandwidth and CPU still matter — high-rate sessions tax your DAW more, especially with many plugins. Bounce stems at lower rates if mixing performance becomes an issue.

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