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Convertitive

Binary to Hexadecimal Converter

1010 (bin) = A (hex)

Convert binary numbers to hexadecimal numbers exactly, for any size. Convertitive parses your input as a BigInt — so 64-bit values, 256-bit hex strings, and even larger numbers round-trip without rounding. For quick reference: 1010 bin = A hex, and 11111111 bin = FF hex.

A
Quick

How to convert binary numbers to hexadecimal numbers

  1. Enter a value

    Type a binary integer in the From field. Allowed characters: 0 and 1.

  2. Read the hexadecimal result

    The To field updates as you type. For example, the binary value 1010 equals A in hexadecimal.

  3. Copy or share

    Use the copy button to grab the result. You can change either base from its dropdown without leaving the page.

Reference table

Fifty representative values. Every row is computed exactly by the same BigInt-based converter that powers the widget above.

Binary (bin)Hexadecimal (hex)
00
11
102
113
1004
1015
1106
1117
10008
10019
1010A
1011B
1100C
1101D
1110E
1111F
1000010
1000111
1001012
1001113
1010014
1100018
111111F
10000020
10010024
1010102A
11000030
11001032
1111113F
100000040
110010064
11111117F
1000000080
11001000C8
11111111FF
100000000100
1111101001F4
1111111111FF
1000000000200
11111010003E8
11111111113FF
10000000000400
100000000000800
10000000000001000
100000000000002000
1000000000000004000
10000000000000008000
1111111111111111FFFF
1000000000000000010000
100000000000000000000100000

Frequently asked questions

How do I convert binary numbers to hexadecimal numbers?
Enter your binary value above. Convertitive parses it as an arbitrary-precision integer and reformats it in hexadecimal. The conversion is exact for any size — there's no float rounding.
What is 1010 in hexadecimal?
1010 (binary) equals A in hexadecimal.
Are negative numbers supported?
No, only non-negative integers are supported for binary ↔ hexadecimal. Two's-complement encodings depend on a chosen bit-width, which this tool does not assume.
What's the largest number I can convert?
Any size. Convertitive uses JavaScript BigInt, which has no fixed upper bound — 256-bit hex strings, 512-bit and bigger all round-trip exactly.
How many bits does the result take?
An n-digit number in base 2 needs roughly 1.00 × n bits to store. The exact bit length equals ⌈log₂(value + 1)⌉.
Is hex case-sensitive?
No. You can type hex with letters in either case. Output is always uppercase (A–F).
Are conversion factors exact?
Yes. Base conversion is integer-to-integer; there are no factors, no rounding, no precision loss.
Why would I convert binary numbers to hexadecimal numbers?
Hex is the standard compact notation for binary data — memory addresses, color codes, hashes. Converting from binary to hex packs the same value into a more readable form.

About binary and hexadecimal

Binary (base 2)

Binary (base 2) represents numbers with two digits: 0 and 1. It is the native language of every digital computer because each digit maps directly to a transistor's on/off state. A group of 8 binary digits forms one byte, the smallest addressable unit in most modern hardware.

Hexadecimal (base 16)

Hexadecimal (base 16) uses digits 0–9 plus the letters A–F to encode the values 10–15. It is the dominant compact notation for binary data: every two hex digits represent exactly one byte. Used universally for memory addresses, color codes (#RRGGBB), and cryptographic hashes.

Other base converters