diff --git a/libc/src/__support/CPP/CMakeLists.txt b/libc/src/__support/CPP/CMakeLists.txt
--- a/libc/src/__support/CPP/CMakeLists.txt
+++ b/libc/src/__support/CPP/CMakeLists.txt
@@ -16,6 +16,12 @@
     bitset.h
 )
 
+add_header_library(
+  byte
+  HDRS
+    byte.h
+)
+
 add_header_library(
   functional
   HDRS
diff --git a/libc/src/__support/CPP/byte.h b/libc/src/__support/CPP/byte.h
new file mode 100644
--- /dev/null
+++ b/libc/src/__support/CPP/byte.h
@@ -0,0 +1,58 @@
+//===-- A self contained equivalent of byte ----------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_SUPPORT_CPP_BYTE_H
+#define LLVM_LIBC_SRC_SUPPORT_CPP_BYTE_H
+
+#include <stddef.h> // For size_t.
+namespace __llvm_libc::cpp {
+
+enum class byte : unsigned char {};
+
+template <class IntegerType>
+static inline constexpr byte operator<<(byte b, IntegerType shift) {
+  return byte(static_cast<unsigned int>(b) << shift);
+}
+template <class IntegerType>
+static inline constexpr byte operator>>(byte b, IntegerType shift) {
+  return byte(static_cast<unsigned int>(b) >> shift);
+}
+static inline constexpr byte operator|(byte l, byte r) {
+  return byte(static_cast<unsigned int>(l) | static_cast<unsigned int>(r));
+}
+static inline constexpr byte operator&(byte l, byte r) {
+  return byte(static_cast<unsigned int>(l) & static_cast<unsigned int>(r));
+}
+static inline constexpr byte operator^(byte l, byte r) {
+  return byte(static_cast<unsigned int>(l) ^ static_cast<unsigned int>(r));
+}
+static inline constexpr byte operator~(byte b) {
+  return byte(~static_cast<unsigned int>(b));
+}
+static inline constexpr byte &operator|=(byte &l, byte r) { return l = l | r; }
+static inline constexpr byte &operator&=(byte &l, byte r) { return l = l & r; }
+static inline constexpr byte &operator^=(byte &l, byte r) { return l = l ^ r; }
+template <class IntegerType>
+static inline constexpr byte &operator<<=(byte &b, IntegerType shift) {
+  return b = b << shift;
+}
+template <class IntegerType>
+static inline constexpr byte &operator>>=(byte &b, IntegerType shift) {
+  return b = b >> shift;
+}
+
+} // namespace __llvm_libc::cpp
+
+namespace __llvm_libc {
+template <class IntegerType>
+static inline constexpr IntegerType to_integer(cpp::byte b) {
+  return IntegerType(b);
+}
+} // namespace __llvm_libc
+
+#endif // LLVM_LIBC_SRC_SUPPORT_CPP_BYTE_H
diff --git a/libc/test/src/__support/CPP/CMakeLists.txt b/libc/test/src/__support/CPP/CMakeLists.txt
--- a/libc/test/src/__support/CPP/CMakeLists.txt
+++ b/libc/test/src/__support/CPP/CMakeLists.txt
@@ -10,6 +10,16 @@
     libc.src.__support.CPP.bitset
 )
 
+add_libc_unittest(
+  byte_test
+  SUITE
+    libc_cpp_utils_unittests
+  SRCS
+    byte_test.cpp
+  DEPENDS
+    libc.src.__support.CPP.byte
+)
+
 add_libc_unittest(
   stringview_test
   SUITE
diff --git a/libc/test/src/__support/CPP/byte_test.cpp b/libc/test/src/__support/CPP/byte_test.cpp
new file mode 100644
--- /dev/null
+++ b/libc/test/src/__support/CPP/byte_test.cpp
@@ -0,0 +1,44 @@
+//===-- Unittests for byte ------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/__support/CPP/byte.h"
+#include "utils/UnitTest/Test.h"
+
+namespace __llvm_libc {
+
+TEST(LlvmLibcByteTest, to_integer) {
+  const char str[] = "abc";
+  const cpp::byte *const ptr = reinterpret_cast<const cpp::byte *>(str);
+  ASSERT_EQ(to_integer<char>(ptr[0]), 'a');
+  ASSERT_EQ(to_integer<char>(ptr[1]), 'b');
+  ASSERT_EQ(to_integer<char>(ptr[2]), 'c');
+  ASSERT_EQ(to_integer<char>(ptr[3]), '\0');
+}
+
+TEST(LlvmLibcByteTest, bitwise) {
+  cpp::byte b{42};
+  ASSERT_EQ(b, cpp::byte{0b00101010});
+
+  b <<= 1;
+  ASSERT_EQ(b, cpp::byte{0b01010100});
+  b >>= 1;
+
+  ASSERT_EQ((b << 1), cpp::byte{0b01010100});
+  ASSERT_EQ((b >> 1), cpp::byte{0b00010101});
+
+  b |= cpp::byte{0b11110000};
+  ASSERT_EQ(b, cpp::byte{0b11111010});
+
+  b &= cpp::byte{0b11110000};
+  ASSERT_EQ(b, cpp::byte{0b11110000});
+
+  b ^= cpp::byte{0b11111111};
+  ASSERT_EQ(b, cpp::byte{0b00001111});
+}
+
+} // namespace __llvm_libc