Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal instantly — with big-integer support. Free, in-browser.
Why convert number bases with ToolJiffy?
Computer systems operate fundamentally in binary (base-2), while developers use octal (base-8) for file permissions, decimal (base-10) for human math, and hexadecimal (base-16) for memory addressing and color codes. Converting numbers between bases accurately is essential for low-level systems programming. ToolJiffy converts number bases instantly in your browser.
- Supports Binary, Octal, Decimal & Hexadecimal: Simultaneous live conversion across base-2, base-8, base-10, and base-16 number systems.
- Arbitrary-Precision BigInt Engine: Handles 64-bit memory addresses, 128-bit UUID integers, and arbitrarily large numbers without precision truncation.
- Bitwise Representation Preview: Inspect binary bit patterns, byte boundaries, and hex byte groupings in real time.
- 100% On-Device Browser Security: Computes base conversions locally in browser memory without sending data to cloud servers.
Native JavaScript BigInt conversion engine
ToolJiffy leverages JavaScript's native BigInt engine. Unlike standard 64-bit IEEE 754 floating-point numbers that cap safe integers at 2^53 - 1, BigInt provides exact integer math for arbitrarily large numbers.
Whether calculating Unix permission octals (0755), debugging memory dumps in C/C++, converting network IP bitmasks, or inspecting cryptographic hash integers, exact base conversion prevents calculation errors.
Client-side security for private mathematical calculations
Pasting cryptographic keys, memory offsets, or financial integers into online converters creates data exposure risks if values are uploaded to servers.
ToolJiffy operates on a zero-cloud architecture. All conversion runs 100% locally in your browser tab. Your number data never leaves your device.
Step-by-step guide to converting number bases
- Enter number value: Type your number into Binary, Octal, Decimal, or Hexadecimal input fields.
- View instant conversion: Watch all alternative number base representations update in real time.
- Copy result: Click Copy next to your target number base string.
Frequently asked questions
How does the Number Base Converter work in browser memory?
ToolJiffy uses JavaScript BigInt arithmetic to convert numbers seamlessly across Binary (base-2), Octal (base-8), Decimal (base-10), and Hexadecimal (base-16) with zero precision loss.
What number bases can I convert between?
You can convert between Binary (base-2), Octal (base-8), Decimal (base-10), Hexadecimal (base-16), and custom bases from base-2 to base-36.
Does ToolJiffy support arbitrary-precision large numbers (BigInt)?
Yes! Using native BigInt algorithms, ToolJiffy handles 64-bit, 128-bit, and arbitrarily large integers without 64-bit floating-point rounding errors.
Is my number data sent to any external server during conversion?
No, 100% private. All number base conversions execute locally inside your browser memory using native JS engines. Your data never leaves your computer.
What is Hexadecimal (base-16) used for in programming?
Hexadecimal represents binary memory addresses, byte values, color codes (#RRGGBB), and network MAC addresses concisely.
How do binary, octal, and hex relate to one another?
Because 8 (2^3) and 16 (2^4) are powers of 2, 1 octal digit maps to 3 binary bits, and 1 hex digit maps to 4 binary bits (nibble).
What prefixes are used for binary, octal, and hex numbers in code?
In JavaScript/Python, binary uses `0b` (e.g. `0b1010`), octal uses `0o` (e.g. `0o755`), and hex uses `0x` (e.g. `0xFF`).
Is ToolJiffy Number Base Converter free without limits?
Yes! ToolJiffy is 100% free with unlimited usages, zero account sign-ups, and zero watermarks.
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