Endianness Converter

Endianness changes byte order, not bit order inside each byte. Single-byte values are unaffected.

Mode

Source byte order

Bit width

Input

Source bytes

—

Converted byte order

—

—Numeric pattern

—Signed interpretation

—Bytes

—Rule

Endianness reorders bytes inside a multi-byte value; it does not reverse bits within each byte.

Check the number representation

Keep number base, bit width, signedness and byte order explicit instead of letting one representation silently imply another.

ParseIdentify the input base or prefix before calculation.

RepresentCross-check binary, octal, decimal and hexadecimal views.

CalculateUse arithmetic or bitwise operations with exact integer scope.

Inspect bitsChoose width, signed interpretation, shifts and byte order explicitly.

Copy / verifyCopy only after checking the representation your code or protocol expects.

Base arithmetic Binary calc Hex calc Bitwise Shift Signed/unsigned Two’s complement IEEE-754

All developer-number calculations run locally. Fixed-width tools model integer bit patterns, not language-specific undefined behavior, CPU flags, binary protocol schemas or floating-point reinterpretation unless a dedicated tool says so.

Endianness Converter: Bytes, Integers & Float Audit

Convert byte order with source and swapped bytes, signed and unsigned interpretations, float32 checks and round-trip evidence.

Extra interpretation

Fixed representations, explicit assumptions

Byte order applies to multi-byte values. Reversing byte order is not the same as reversing individual bits, and raw byte strings do not imply a data type by themselves.

Browser-local integer math

Reverse byte order for integers or raw hex groups and inspect source/target byte layouts. Inputs are processed locally with BigInt where integer precision matters.

Practical guide and verification

Use the tool first, then use these checks to interpret, verify and hand off the result without displacing the primary workflow.

State the width and interpretation before swapping bytes

The same hex bytes can represent an unsigned integer, signed integer, floating-point number, text, or an opaque protocol field. Choose the bit width and data type first. A byte-order conversion is meaningful only when the representation boundaries are known.

Write out the byte groups for a manual check

Split the value into two-digit hex bytes, reverse the byte order, and join them again. This small hand check is especially useful for 16- and 32-bit examples and catches a common mistake: reversing individual hex digits instead of whole bytes.

Keep bit order separate from byte order

Endianness usually describes the order of multi-byte units in memory or a file. It does not mean that the bits inside each byte should also be reversed. If a protocol specifies bit numbering, word order, or mixed-endian fields, treat those as separate rules.

Verify against the file or protocol specification

Do not infer endianness only because one converted number looks plausible. Check magic bytes, field definitions, architecture documentation, or a known test vector. For floating-point values, confirm both IEEE-754 format and byte order before interpreting the numeric result.