Convert integers between binary, octal, decimal, hexadecimal, and any base from 2 to 36 exactly.
This tool runs directly in your browser. The content you enter is processed locally and is not sent to TechFixGen servers. No account or signup is required.
A base is the set of digits a number system uses. Decimal uses ten digits (0–9), binary uses two (0 and 1), and hexadecimal uses sixteen (0–9 then a–f). The base is the multiplier between consecutive digit positions: in decimal, 10 means one ten and zero ones, while in binary the same 10 means one two and zero ones.
Computers store numbers as bits. Binary is the direct view of those bits, which is why it is the most natural format for bitmasks and permissions. Hex is binary's shorthand: one hex digit pairs exactly with four bits, so f is 1111 and ff is 11111111. That one-to-four relationship makes hex compact and easy to translate by hand.
This converter works with integers only, and it converts them exactly using arbitrary precision. Values larger than Number.MAX_SAFE_INTEGER (≈ 9 quadrillion) round-trip without precision loss, so you can paste very long hex hashes or bit patterns without worrying about floating-point errors. Fractions are out of scope by design.
The main output shows the number in your chosen target base. Below it, four standard representations — binary, octal, decimal, and hex — give you the whole picture at once. Use the uppercase option when you need hex digits in A–F, and the grouping option to visually separate binary digits in nibbles of four or other digits in threes. Copying always sends the raw, ungrouped value.
Every conversion runs locally in your browser. The number you enter is not uploaded to TechFixGen servers and is not included in analytics events. No account or signup is required. Generating random strings instead? See the Online Hash Generator.
A base defines the digits a number system uses and how much each position is worth. Decimal is base 10 (digits 0–9), binary is base 2 (0 and 1), and hexadecimal is base 16 (0–9 then a–f). The same quantity looks different in each base.
One hex digit pairs exactly with four bits, so hex is a compact shorthand for binary. The byte value 255 is f in pairs as ff, and colors, memory addresses, and hashes are naturally written in hex.
No. Conversion is integer-only by design. Working with whole numbers keeps the result exact — including values beyond Number.MAX_SAFE_INTEGER — because the tool uses arbitrary-precision (BigInt) arithmetic.
Paste the value directly. The converter uses BigInt internally, so a very long hex hash or bit pattern converts exactly, without the rounding that floating-point arithmetic would introduce.
Grouping separates digits with spaces purely for readability — binary in groups of four, other bases in groups of three. It is a display option only; the Copy result button always copies the raw, ungrouped value.
No. Conversion happens entirely in your browser. Your input is not uploaded to TechFixGen servers and is not included in analytics events.