{"id":2113,"date":"2026-11-05T09:13:00","date_gmt":"2026-11-05T14:13:00","guid":{"rendered":"https:\/\/www.xconvert.com\/blog\/?p=2113"},"modified":"2026-08-31T23:09:51","modified_gmt":"2026-09-01T03:09:51","slug":"16-bit-vs-24-bit-wav","status":"publish","type":"post","link":"https:\/\/www.xconvert.com\/blog\/16-bit-vs-24-bit-wav","title":{"rendered":"16-bit vs 24-bit vs 32-bit WAV: What Bit Depth Costs You"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Someone sent you a 24-bit WAV and your project is 16-bit. Or a studio asked for \u201c24-bit\/48k\u201d and your recorder was set to something else. Or you opened a WAV converter looking for the bitrate slider you get on MP3 pages and there isn\u2019t one \u2014 just a codec list reading <strong>PCM 16-bit<\/strong>, <strong>PCM 24-bit<\/strong>, <strong>PCM 32-bit<\/strong>, plus two odd telephony entries. That absence is the clue: with uncompressed audio there is nothing to negotiate. Sample rate, channel count and bit depth <em>are<\/em> the bitrate, and every byte is predictable before you convert.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>Quick answer:<\/strong> <strong>Bit depth sets the dynamic range and the file size, and nothing else.<\/strong> Each bit adds about 6 dB, so 16-bit gives a theoretical <strong>98 dB<\/strong> and 24-bit about <strong>146 dB<\/strong>. Size scales exactly in proportion: at 44.1 kHz stereo, 16-bit is <strong>10.58 MB per minute<\/strong>, 24-bit is <strong>15.88 MB<\/strong> and 32-bit is <strong>21.17 MB<\/strong>. <strong>Record and edit at 24-bit<\/strong> so you can set conservative levels; <strong>deliver at 16-bit<\/strong>, which is the CD standard and what most distribution wants. Converting 16-bit <em>up<\/em> to 24-bit adds nothing but bytes. On xconvert\u2019s <a href=\"https:\/\/www.xconvert.com\/compress-wav\">WAV compressor<\/a> the <strong>Audio Codec<\/strong> control is where you set this \u2014 turn on the <strong>Show All Options<\/strong> toggle at the top of Advanced Options to reveal it; there is no bitrate control on a WAV output at all.<\/p><\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">Jump to a section<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"#what\">What bit depth is, and why there\u2019s no bitrate box<\/a><\/li><li><a href=\"#size\">The size arithmetic, worked out<\/a><\/li><li><a href=\"#range\">What eight more bits actually buys<\/a><\/li><li><a href=\"#32bit\">The 32-bit trap: integer is not float<\/a><\/li><li><a href=\"#tool\">Set the bit depth on xconvert<\/a><\/li><li><a href=\"#faq\">FAQ<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"what\">What bit depth is, and why there\u2019s no bitrate box<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Digital audio samples the waveform thousands of times a second and stores each sample as a number. Three things describe that completely:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Sample rate<\/strong> \u2014 how many samples per second (44,100 or 48,000 for most work).<\/li><li><strong>Channels<\/strong> \u2014 1 for mono, 2 for stereo.<\/li><li><strong>Bit depth<\/strong> \u2014 how many bits each sample is stored in. More bits means finer steps between the loudest and quietest values a sample can represent.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Multiply them and you have the data rate. There is no encoder making decisions and no quality-versus-size trade to tune, which is exactly why the WAV output page has no bitrate control. Every setting it does have \u2014 <strong>Audio Sample Rate<\/strong>, <strong>Audio Channel<\/strong> and, behind the <strong>Show All Options<\/strong> toggle, <strong>Audio Codec<\/strong> \u2014 changes the size directly and arithmetically.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>bytes per second = sample rate \u00d7 channels \u00d7 (bit depth \u00f7 8)<\/strong><\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">The <strong>Audio Codec<\/strong> control on xconvert\u2019s WAV output has five entries \u2014 a row of selectable buttons rather than a dropdown, and one you only see after switching on <strong>Show All Options<\/strong> \u2014 and only three of them are conventional bit depths:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>PCM 16-bit Little Endian<\/strong> \u2014 the default, and the CD standard.<\/li><li><strong>PCM 24-bit Little Endian<\/strong> \u2014 the studio recording and mastering standard.<\/li><li><strong>PCM 32-bit Little Endian<\/strong> \u2014 32-bit <em>integer<\/em>. See the section below before choosing it.<\/li><li><strong>PCM A-law<\/strong> and <strong>PCM mu-law<\/strong> \u2014 8 bits per sample, companded rather than linear. These are the telephony formats (the G.711 pair), and they are <strong>lossy<\/strong>: the companding curve deliberately spends its resolution where speech lives. They belong with <strong>Audio Sample Rate<\/strong> set to <strong>8000 HZ<\/strong> and <strong>Audio Channel<\/strong> set to <strong>MONO<\/strong>, which is the classic 64 kbit\/s phone-system format. Choosing them at 44.1 kHz stereo produces a half-size file that sounds like a phone call.<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">There is no 8-bit linear option in that list, and no 96 kHz in the sample-rate list \u2014 the rates offered are 8000, 12000, 16000, 24000, 44100 and 48000 Hz.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"size\">The size arithmetic, worked out<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Every figure below comes from the formula above; nothing here is estimated. MB means 1,000,000 bytes.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Setting<\/th><th>Data rate<\/th><th>Per minute<\/th><th>3-minute track<\/th><th>Per hour<\/th><\/tr><\/thead><tbody><tr><td>PCM 16-bit, 44.1 kHz stereo<\/td><td>1,411 kbit\/s<\/td><td><strong>10.58 MB<\/strong><\/td><td>31.8 MB<\/td><td>0.64 GB<\/td><\/tr><tr><td>PCM 24-bit, 44.1 kHz stereo<\/td><td>2,117 kbit\/s<\/td><td><strong>15.88 MB<\/strong><\/td><td>47.6 MB<\/td><td>0.95 GB<\/td><\/tr><tr><td>PCM 32-bit, 44.1 kHz stereo<\/td><td>2,822 kbit\/s<\/td><td><strong>21.17 MB<\/strong><\/td><td>63.5 MB<\/td><td>1.27 GB<\/td><\/tr><tr><td>PCM 16-bit, 48 kHz stereo<\/td><td>1,536 kbit\/s<\/td><td>11.52 MB<\/td><td>34.6 MB<\/td><td>0.69 GB<\/td><\/tr><tr><td>PCM 24-bit, 48 kHz stereo<\/td><td>2,304 kbit\/s<\/td><td>17.28 MB<\/td><td>51.8 MB<\/td><td>1.04 GB<\/td><\/tr><tr><td>PCM 32-bit, 48 kHz stereo<\/td><td>3,072 kbit\/s<\/td><td>23.04 MB<\/td><td>69.1 MB<\/td><td>1.38 GB<\/td><\/tr><tr><td>PCM 16-bit, 44.1 kHz <strong>mono<\/strong><\/td><td>706 kbit\/s<\/td><td>5.29 MB<\/td><td>15.9 MB<\/td><td>0.32 GB<\/td><\/tr><tr><td>A-law \/ mu-law, 8 kHz mono<\/td><td>64 kbit\/s<\/td><td>0.48 MB<\/td><td>1.4 MB<\/td><td>0.03 GB<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Two things fall straight out of that table.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Switching to mono halves the file, and it is usually the bigger win.<\/strong> Going 24-bit \u2192 16-bit saves a third; going stereo \u2192 mono saves half. For a mono source \u2014 one voice, one instrument, a phone recording, an interview \u2014 a stereo file is storing two identical channels. Set <strong>Audio Channel<\/strong> to <strong>MONO<\/strong> first, then think about bit depth.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Long recordings hit a hard ceiling.<\/strong> WAV is a RIFF file, and RIFF stores chunk sizes in a 32-bit field, which caps a WAV at about 4 GB. The EBU built the RF64 format specifically to get past it, describing it as a format \u201cenabling file sizes in excess of 4 Gbyte\u201d that switches \u201cfrom the BWF RIFF size field to the 64-bit riffSize value\u201d when a recording passes that point. In practice, at 44.1 kHz stereo you get roughly <strong>6.8 hours at 16-bit, 4.5 hours at 24-bit and 3.4 hours at 32-bit<\/strong> before you are in that territory. Long-form recording at high bit depths runs out of format before it runs out of disk.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If the file is simply too big and quality has to survive intact, bit depth is the wrong lever \u2014 <a href=\"https:\/\/www.xconvert.com\/blog\/flac-vs-wav\/\">convert it to FLAC<\/a>, which is lossless and typically much smaller than the WAV it came from.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"range\">What eight more bits actually buys<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Bit depth controls <strong>dynamic range<\/strong> \u2014 the distance between the loudest signal the format can hold and the quantisation noise floor beneath it. The standard result for an ideal converter, as Texas Instruments states it in <em>Understanding Data Converters<\/em>, is:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><strong>SNR = 6.02n + 1.76 dB<\/strong><\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Run the numbers and the picture is clear:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>16-bit<\/strong> \u2192 6.02 \u00d7 16 + 1.76 = <strong>98.1 dB<\/strong><\/li><li><strong>24-bit<\/strong> \u2192 <strong>146.2 dB<\/strong><\/li><li><strong>32-bit<\/strong> \u2192 <strong>194.4 dB<\/strong><\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">98 dB is already more range than most listening situations can use \u2014 a domestic room\u2019s own noise floor sits tens of decibels above silence, and so does the analogue electronics in a typical playback chain. So the reason professionals record at 24-bit is not that they can hear the difference at playback. It is <strong>headroom during capture<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">At 16-bit you have to track close to the top of the scale to stay comfortably above the noise floor, so an unexpected loud moment clips and is gone. At 24-bit you can set levels 15 or 20 dB conservatively, never risk clipping, and still have more resolution under the signal than a 16-bit file would have had at full scale. Editing benefits for the same reason: every gain change, fade and mix sum is arithmetic on those samples, and starting with more of them leaves rounding further below anything audible.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">That logic runs one way only. <strong>Converting a 16-bit file to 24-bit does not recover range that was never captured<\/strong> \u2014 it pads each sample with zeros and makes the file 50% larger. It is worth doing only when a piece of software or a delivery spec refuses anything but 24-bit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The reverse \u2014 24-bit down to 16-bit for delivery \u2014 is a real conversion and the normal last step. 16-bit\/44.1 kHz stereo is the Red Book CD specification and remains what most distribution and playback expects; there is a dedicated walk-through in <a href=\"https:\/\/www.xconvert.com\/blog\/convert-audio-to-16-bit-44-khz-wav\/\">convert audio to 16-bit \/ 44.1 kHz WAV<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"789\" src=\"https:\/\/www.xconvert.com\/blog\/wp-content\/uploads\/2026\/08\/wav-bit-depth-compared.png\" alt=\"Comparison grid of PCM 16-bit, 24-bit and 32-bit WAV at 44.1 kHz stereo: dynamic range 98.1, 146.2 and 194.4 dB; 10.58, 15.88 and 21.17 MB per minute; 6.8, 4.5 and 3.4 hours before the 4 GB WAV limit\" class=\"wp-image-2112\" srcset=\"https:\/\/www.xconvert.com\/blog\/wp-content\/uploads\/2026\/08\/wav-bit-depth-compared.png 1600w, https:\/\/www.xconvert.com\/blog\/wp-content\/uploads\/2026\/08\/wav-bit-depth-compared-300x148.png 300w, https:\/\/www.xconvert.com\/blog\/wp-content\/uploads\/2026\/08\/wav-bit-depth-compared-1024x505.png 1024w, https:\/\/www.xconvert.com\/blog\/wp-content\/uploads\/2026\/08\/wav-bit-depth-compared-768x379.png 768w, https:\/\/www.xconvert.com\/blog\/wp-content\/uploads\/2026\/08\/wav-bit-depth-compared-1536x757.png 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"32bit\">The 32-bit trap: integer is not float<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is the one that catches people out. The entry is labelled <strong>PCM 32-bit Little Endian<\/strong>, and that is 32-bit <strong>signed integer<\/strong> \u2014 not 32-bit <strong>float<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">They are different formats. 32-bit float stores each sample with an exponent, which is what gives float recorders their trick: a signal that goes \u201cover 0 dBFS\u201d is not clipped, because the exponent simply moves and you can pull it back afterwards. 32-bit integer has no exponent \u2014 it is a linear scale like 16- and 24-bit with a finer step, and it clips at full scale exactly as they do.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So if you bought a 32-bit-float field recorder and expect this option to behave the same way, it will not. And as a general choice it is hard to justify: it costs a third more than 24-bit for a theoretical 194 dB of range that no microphone, preamp or converter in existence comes close to producing. <strong>Pick 24-bit for work and 16-bit for delivery<\/strong>; reach for 32-bit integer only when a specific application demands that exact format.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tool\">Set the bit depth on xconvert<\/h2>\n\n\n\n<ol class=\"wp-block-list\"><li>Open the <a href=\"https:\/\/www.xconvert.com\/compress-wav\">WAV compressor<\/a> and click <strong>Upload<\/strong> to add your audio. You can queue several files.<\/li><li>Open <strong>Advanced Options<\/strong>, then switch on the <strong>Show All Options<\/strong> toggle at the top of that panel. <strong>Audio Codec<\/strong> is an advanced control and does not appear until you do.<\/li><li>Under <strong>Audio Codec<\/strong>, pick your depth: <strong>PCM 16-bit Little Endian<\/strong> (the default, and the delivery standard), <strong>PCM 24-bit Little Endian<\/strong> for recording and editing masters, or <strong>PCM 32-bit Little Endian<\/strong> only if something specifically requires it.<\/li><li>Under <strong>Audio Channel<\/strong>, choose <strong>MONO<\/strong> for single-source material \u2014 it halves the file on its own. <strong>ORIGINAL<\/strong> and <strong>STEREO<\/strong> are the alternatives.<\/li><li>Under <strong>Audio Sample Rate<\/strong>, leave <strong>ORIGINAL<\/strong> unless you have a reason. Downsampling to <strong>44100 HZ<\/strong> is the standard delivery move; <strong>8000 HZ<\/strong> exists for telephony and pairs with the A-law and mu-law codecs.<\/li><li>If you only need part of the file, open <strong>Trim<\/strong>, switch from <strong>Unchanged<\/strong> to <strong>Trim<\/strong>, and set <strong>Start time<\/strong> and <strong>Duration<\/strong>.<\/li><li>Click <strong>Compress<\/strong> and download.<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">Your file uploads over an encrypted connection, is processed on our servers, and is deleted automatically a few hours later. No sign-up, no watermark.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">FAQ<\/h2>\n\n\n\n<h5 class=\"wp-block-heading\">Is 24-bit WAV better than 16-bit?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">For recording and editing, yes \u2014 meaningfully. For listening, almost never. The extra eight bits buy about 48 dB of additional theoretical dynamic range, which you spend as <strong>headroom while capturing<\/strong>: you can set levels well below clipping and still keep an enormous margin above the noise floor. At playback, 16-bit\u2019s ~98 dB already exceeds what a normal room and normal electronics can resolve. Work in 24-bit, deliver in 16-bit.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">If I convert a 16-bit WAV to 24-bit, does the quality improve?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">No. The conversion pads each 16-bit sample out to 24 bits; the information content is identical and the file becomes 50% larger. Nothing about the original recording\u2019s noise floor or dynamic range changes. Do it only when a piece of software, a mastering house or a submission spec insists on 24-bit input.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Why is there no bitrate setting for WAV?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Because WAV is uncompressed, so the bitrate is not a choice \u2014 it is the product of sample rate, channel count and bit depth. Change any of those three and the bitrate follows automatically. A bitrate control only makes sense for a codec that decides how many bits to spend, which is why MP3, AAC and Opus pages have one and WAV pages do not.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">How big is a 24-bit 48 kHz stereo WAV?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">48,000 \u00d7 2 \u00d7 3 bytes = 288,000 bytes per second, which is <strong>17.28 MB per minute<\/strong>, about 1.04 GB per hour. At 44.1 kHz the same depth is 15.88 MB per minute. You can compute any combination the same way: sample rate \u00d7 channels \u00d7 (bit depth \u00f7 8).<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Is the 32-bit option the same as 32-bit float?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">No. <strong>PCM 32-bit Little Endian<\/strong> is 32-bit <em>signed integer<\/em> \u2014 a linear scale like 16- and 24-bit, with finer steps but the same hard clipping ceiling. 32-bit float, the format that modern field recorders use, stores an exponent per sample, which is what lets an over-level signal be recovered rather than clipped. If you specifically need float, this is not it.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">What are the A-law and mu-law options for?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Telephony. They are the two G.711 companding schemes: 8 bits per sample on a non-linear curve tuned for speech, used by phone systems, PBXs and IVR prompts. Paired with <strong>8000 HZ<\/strong> and <strong>MONO<\/strong> they produce the 64 kbit\/s format those systems expect. They are lossy, so they are the wrong choice for music or anything you intend to edit further.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Why does my long recording stop around 4 GB?<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">Because WAV\u2019s RIFF container stores sizes in a 32-bit field, capping the file at roughly 4 GB. The EBU created RF64 specifically to extend this, switching to a 64-bit size value when a recording passes that point. At 44.1 kHz stereo the practical limits are roughly 6.8 hours at 16-bit, 4.5 at 24-bit and 3.4 at 32-bit \u2014 so if you record long-form, either split the session or lower the depth and channel count.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sources<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Last verified 2026-08-31.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.ti.com\/lit\/an\/slaa013\/slaa013.pdf\">Texas Instruments \u2014 <em>Understanding Data Converters<\/em> (SLAA013)<\/a> \u2014 the ideal-quantiser result SNR = 6.02n + 1.76 dB, from which the 98.1 dB \/ 146.2 dB \/ 194.4 dB figures are calculated.<\/li><li><a href=\"https:\/\/tech.ebu.ch\/docs\/tech\/tech3306.pdf\">EBU Tech 3306 v2 \u2014 <em>RF64: An Extended File Format for Audio Data<\/em><\/a> \u2014 \u201ca 64-bit BWF-compatible file format enabling file sizes in excess of 4 Gbyte\u201d (the cover renders it in capitals as 4 GBYTE; the body text uses \u201c4 Gbyte\u201d), switching \u201cfrom the BWF RIFF size field to the 64-bit riffSize value\u2026 when a recording application passes the 4 Gbyte file size.\u201d Backs the WAV size ceiling.<\/li><li><a href=\"https:\/\/www.xconvert.com\/compress-wav\">xconvert WAV compressor<\/a> \u2014 the live <strong>Audio Codec<\/strong> list (PCM A-law, PCM mu-law, PCM 16-bit \/ 24-bit \/ 32-bit Little Endian, with 16-bit selected), which renders as five buttons behind the <strong>Show All Options<\/strong> toggle, <strong>Audio Channel<\/strong>, <strong>Audio Sample Rate<\/strong> (8000 \/ 12000 \/ 16000 \/ 24000 \/ 44100 \/ 48000 Hz) and <strong>Trim<\/strong> controls, and the absence of any bitrate control, read from the page on 2026-08-31.<\/li><li>All file sizes are arithmetic, not measurements: bytes per second = sample rate \u00d7 channels \u00d7 (bit depth \u00f7 8), with MB = 1,000,000 bytes. Recompute any row yourself.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>16-bit WAV is 10.58 MB a minute, 24-bit is 15.88 MB. What bit depth actually changes, why there&#8217;s no bitrate box, and when 24-bit is worth it.<\/p>\n","protected":false},"author":3,"featured_media":2110,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,14],"tags":[],"class_list":["post-2113","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-how-to-guides","category-tools"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>16-bit vs 24-bit vs 32-bit WAV: What Bit Depth Costs You<\/title>\n<meta name=\"description\" content=\"16-bit WAV is 10.58 MB a minute, 24-bit is 15.88 MB. 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