Invalid digit error
remove characters not allowed in the selected base, such as 2 in binary or G in hexadecimal.
Number Base Converter
Convert one non-negative integer across decimal, hexadecimal, binary and octal, with separate unsigned 32-bit bitwise controls.
Calculators & ConvertersDirect answer
A number base converter represents the same integer in different radices. AppKiro updates decimal, hexadecimal, binary and octal fields in real time and also provides optional prefixes, a 16-bit display toggle and unsigned 32-bit bitwise operations. Real-time decimal, hexadecimal, binary and octal conversion.
0x
0b
0o
1514131211109876543210
How to use it
Enter the source data: Enter a non-negative integer in any one of the four base fields. Use only digits valid for that base and include a prefix only when the parser explicitly accepts it.
Choose the relevant settings: Toggle display prefixes or 16-bit grouping only for readability. For AND, OR, XOR, NOT or shifts, enter operands that fit the documented unsigned 32-bit model.
Review and verify the result: Copy the required representation and retain the base/prefix in documentation. Verify values beyond 32 bits independently when bitwise operations are involved.
Key capabilities
- Real-time decimal, hexadecimal, binary and octal conversion.
- Optional 0x, 0b and 0o prefixes.
- 16-bit display/grouping option for readability.
- Unsigned 32-bit AND, OR, XOR and NOT.
- Left/right shifts with a 0–31 shift range.
Best use cases
- Convert IDs, masks or color-like values between bases.
- Inspect binary and hex representations during debugging.
- Demonstrate basic bitwise operations on unsigned 32-bit values.
Limits and safety notes
- A numeral representation is not the same as signed interpretation or byte order. Values can convert exactly across bases while bitwise operations truncate to 32 bits. Negative numbers, fractions and arbitrary-width bitwise math require a different tool.
- The core transformation runs in the current browser component. Browser extensions, clipboard history, downloaded files and site-wide diagnostics remain separate exposure points, so never enter production secrets unless you have reviewed the complete environment.
- The converter accepts non-negative integers and uses BigInt for base conversion. Bitwise AND, OR, XOR, NOT and shifts are explicitly masked to unsigned 32-bit results.
Troubleshooting
Bitwise result is truncated
the operation follows unsigned 32-bit semantics; use an arbitrary-precision library for wider values.
Shift result is unexpected
verify the shift direction and keep the count within 0–31.
Frequently asked questions
Can this converter handle negative numbers or fractions?
Not in the current documented scope. It is designed for non-negative integers; signed and fractional conversion need separate parsing and representation rules.
Why do bitwise results differ from the converted value?
Base conversion preserves the integer, but JavaScript-style bitwise operations operate on 32-bit words and can truncate larger values.
Should I include 0x, 0b or 0o?
Use prefixes only when the target parser expects them. The page can display prefixes for clarity while keeping the numeric value unchanged.
Is it safe and private?
The calculation runs in this browser component, but that alone is not a complete privacy guarantee. Use non-production data unless you have also reviewed extensions, clipboard history, downloads and site diagnostics.
Does it work on mobile?
The layout adapts to narrow screens. File selection, camera access, clipboard actions and downloads still depend on the permissions and capabilities of the mobile browser.
Related tools
Use the tool
Enter one integer, copy the representation with an explicit base label and treat bitwise operations as a separate 32-bit workflow.