If you’re new to programming, base conversion can feel confusing and error-prone when calculated by hand. With ToolNow Online Base Converter, you don’t have to struggle anymore. It’s free, requires no registration, and supports instant conversion between binary, octal, decimal, and hexadecimal.
Usage Steps
- Select the source baseChoose the base of your number from the left dropdown. Each type has its own rules:
- Binary: Only 0 and 1
- Octal: Only 0–7
- Decimal: Standard 0–9 digits
- Hexadecimal: 0–9 and A-F (upper or lowercase both work)
- Select the target basePick the base you want to convert to from the right menu.
- Enter your numberType a valid number that matches the source base format.
- Click ConvertThe result shows instantly, no waiting or extra steps.
Examples
Example 1: Decimal to Hexadecimal
- Source: Decimal
- Target: Hexadecimal
- Input: 255
- Output: FF
Example 2: Binary to Decimal
- Source: Binary
- Target: Decimal
- Input: 11111111
- Output: 255
Example 3: Hexadecimal to Binary
- Source: Hexadecimal
- Target: Binary
- Input: FF
- Output: 11111111
Notes
- Make sure your input follows the rules of the selected base, or the conversion will fail.
- Hexadecimal letters support both uppercase (A-F) and lowercase (a-f).
- This tool only supports integers. Decimals are not supported at the moment.
Overall, this base converter is beginner-friendly, fast, and easy to use. It’s ideal for students, programmers, and anyone who needs quick and accurate base conversion.
