🔄 Decimal ↔ Hex Converter
Convert decimal values to hexadecimal and hexadecimal back to decimal with binary references.
Enter either a decimal or hexadecimal number. The tool shows both conversions plus the binary representation for quick verification.
Supports negative integers. Fractions are not handled.
Use digits 0-9 and letters A-F (case insensitive). Negative sign allowed.
From Decimal
Hex: DEADBEEF
Binary: 11011110101011011011111011101111
From Hexadecimal
Decimal: 3,735,928,559
Binary: 11011110101011011011111011101111
How to Use This Calculator
Enter decimal or hex
Provide the number in the base you have. The tool automatically updates the other base and binary output.
Validate results
Use the binary reference to double-check conversions or share with colleagues.
Copy outputs
Use the converted values in code, documentation, or educational materials.
Formula
Hex digit value = Σ (digit × 16^position)
Decimal to hex uses repeated division by 16
Positive/negative sign is preserved across conversions
Use the formula breakdown to confirm the calculation logic or perform the conversion manually if needed.
Full Description
Hexadecimal is a compact way to represent binary data, widely used in programming, debugging, and digital electronics. This converter lets you translate between decimal and hex quickly, including the corresponding binary values for verification.
Having decimal, hex, and binary simultaneously visible helps when interpreting memory dumps, color codes, or instruction sets.
Negative values are supported by treating the sign separately, mirroring how most programming languages represent integers.
Frequently Asked Questions
Does it support floating-point numbers?
No. The converter focuses on integers. Floating-point hex representations require IEEE 754 converters.
Are lowercase hex inputs allowed?
Yes. Inputs are automatically converted to uppercase for a consistent display.
What about extremely large numbers?
The converter operates within JavaScript’s safe integer range. Beyond that, precision may be lost.
Can I convert hex to decimal without decimal output?
Decimal is shown for completeness. If you only need hex, copy the hex output. The decimal field helps ensure accuracy.