diff --git a/doc/api/buffer.md b/doc/api/buffer.md
index 5c565724573434..50f24f1c12a543 100644
--- a/doc/api/buffer.md
+++ b/doc/api/buffer.md
@@ -2308,6 +2308,7 @@ added: v0.1.90
 * {integer}
 
 Returns the number of bytes in `buf`.
+An alias of the inherited [`buf.byteLength`][].
 
 ```mjs
 import { Buffer } from 'buffer';
@@ -5240,6 +5241,7 @@ introducing security vulnerabilities into an application.
 [`TypedArray`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray
 [`Uint8Array`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array
 [`buf.buffer`]: #bufbuffer
+[`buf.byteLength`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/byteLength
 [`buf.compare()`]: #bufcomparetarget-targetstart-targetend-sourcestart-sourceend
 [`buf.entries()`]: #bufentries
 [`buf.fill()`]: #buffillvalue-offset-end-encoding
diff --git a/doc/api/fs.md b/doc/api/fs.md
index cea4f600ac8bd0..569f91a46a6af6 100644
--- a/doc/api/fs.md
+++ b/doc/api/fs.md
@@ -378,7 +378,7 @@ added:
   * `offset` {integer} The location in the buffer at which to start filling.
     **Default:** `0`
   * `length` {integer} The number of bytes to read. **Default:**
-    `buffer.byteLength`
+    `buffer.length` (`.byteLength` for TypedArray|DataView types)
   * `position` {integer} The location where to begin reading data from the
     file. If `null`, data will be read from the current file position, and
     the position will be updated. If `position` is an integer, the current
@@ -568,7 +568,8 @@ changes:
 * `offset` {integer} The start position from within `buffer` where the data
   to write begins. **Default:** `0`
 * `length` {integer} The number of bytes from `buffer` to write. **Default:**
-  `buffer.byteLength`
+  `buffer.length` (`.byteLength` for TypedArray|DataView types;
+  ignored for string|Object types)
 * `position` {integer} The offset from the beginning of the file where the
   data from `buffer` should be written. If `position` is not a `number`,
   the data will be written at the current position. See the POSIX pwrite(2)
@@ -3022,7 +3023,7 @@ changes:
 * `options` {Object}
   * `buffer` {Buffer|TypedArray|DataView} **Default:** `Buffer.alloc(16384)`
   * `offset` {integer} **Default:** `0`
-  * `length` {integer} **Default:** `buffer.byteLength`
+  * `length` {integer} **Default:** `buffer.length` (`.byteLength` for TypedArray|DataView types)
   * `position` {integer|bigint} **Default:** `null`
 * `callback` {Function}
   * `err` {Error}
@@ -4134,7 +4135,7 @@ the current position. See pwrite(2).
 The callback will receive the arguments `(err, written, string)` where `written`
 specifies how many _bytes_ the passed string required to be written. Bytes
 written is not necessarily the same as string characters written. See
-[`Buffer.byteLength`][].
+[`Buffer.byteLength()`][].
 
 It is unsafe to use `fs.write()` multiple times on the same file without waiting
 for the callback. For this scenario, [`fs.createWriteStream()`][] is
@@ -5025,7 +5026,7 @@ changes:
 * `buffer` {Buffer|TypedArray|DataView}
 * `options` {Object}
   * `offset` {integer} **Default:** `0`
-  * `length` {integer} **Default:** `buffer.byteLength`
+  * `length` {integer} **Default:** `buffer.length` (`.byteLength` for TypedArray|DataView types)
   * `position` {integer|bigint} **Default:** `null`
 * Returns: {number}
 
@@ -7025,7 +7026,7 @@ the file contents.
 [MSDN-Using-Streams]: https://docs.microsoft.com/en-us/windows/desktop/FileIO/using-streams
 [Naming Files, Paths, and Namespaces]: https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file
 [`AHAFS`]: https://developer.ibm.com/articles/au-aix_event_infrastructure/
-[`Buffer.byteLength`]: buffer.md#static-method-bufferbytelengthstring-encoding
+[`Buffer.byteLength()`]: buffer.md#static-method-bufferbytelengthstring-encoding
 [`FSEvents`]: https://developer.apple.com/documentation/coreservices/file_system_events
 [`Number.MAX_SAFE_INTEGER`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER
 [`ReadDirectoryChangesW`]: https://docs.microsoft.com/en-us/windows/desktop/api/winbase/nf-winbase-readdirectorychangesw