The Hesapstan number base converter is designed to convert numbers between bases from 2 to 36 more clearly. The tool does not change the value of the number; it shows how the same value is written in another base.
What does the number base converter do?
This tool converts a number from a selected source base to a selected target base. For example, you can convert a decimal number to binary, a binary number to decimal, or a hexadecimal value to another supported base.
The runtime supports bases from 2 to 36. That means the calculator is not limited to binary, octal, decimal and hexadecimal; it can also convert between many other positional bases when the entered digits are valid for the selected source base.
Base conversion does not change the actual value of a number. It only changes the notation used to represent that value.
What is a number base?
A number base tells you how many symbols are used in a positional number system and how each digit position is weighted. The decimal system is base 10 because it uses ten digits from 0 to 9.
Base 2 uses only 0 and 1. Base 16 uses digits 0–9 and then letters A, B, C, D, E and F. In bases above 10, letters represent digit values greater than 9.
Binary, octal, decimal and hexadecimal
Binary, or base 2, is fundamental in computing. Decimal, or base 10, is the number system used in everyday life. Hexadecimal, or base 16, is common in programming, memory representation and compact numeric notation.
- Base 2 uses only 0 and 1.
- Base 8 uses digits from 0 to 7.
- Base 10 uses digits from 0 to 9.
- Base 16 uses 0–9 and A–F.
- Base 36 may use 0–9 and A–Z.
How does base conversion work?
To convert a number between bases, the source-base digits are first interpreted as a value, then that same value is rewritten using the target base. The tool performs this process after you choose the source base, target base and input number.
For example, decimal 15 is written as 1111 in binary. That is because 1111₂ represents 8 + 4 + 2 + 1, which equals 15.
Decimal and binary conversion
Decimal means base 10, while binary means base 2. When a decimal number is converted to binary, it is represented using powers of 2.
For example, 13 is written as 1101 in binary. This is because 1101₂ equals 8 + 4 + 0 + 1, which gives 13. Converting 1101 back from base 2 to base 10 gives the same value.
Why are letters used in hexadecimal?
In bases greater than 10, letters are used to represent digit values above 9. In hexadecimal, A means 10, B means 11, C means 12, D means 13, E means 14 and F means 15.
These letters are not text characters in the usual sense here. They are digit symbols used to represent values greater than 9 in a single digit position.
What do bases 2 to 36 mean?
Base 2 is the smallest common positional base because it uses two symbols. Base 36 is a practical upper limit when using digits 0–9 and letters A–Z as digit symbols.
This range covers many educational and programming-related conversions. It does not mean that every computer-specific representation is supported. Signed integers, two’s complement and floating point formats follow additional rules.
Is this a HEX color or ASCII converter?
No. This tool performs number base conversion. A hexadecimal number and a HEX color code may look similar, but color codes represent RGB color channels and require a different interpretation.
This tool does not convert ASCII, Unicode, HEX color values, byte arrays, signed integers, two’s complement or floating point representations. Those conversions require different rules.
Are fractions or negative numbers supported?
This content treats the tool as a basic integer number-base converter. Fractional values, negative-number encodings, two’s complement and floating point formats require more specialized rules.
The input must use symbols that are valid for the selected source base. For example, digits such as 2, 3 or A are not valid in base 2.
When is this calculator not enough?
The tool is suitable for basic number-base conversion. If you need programming-language-specific integer representation, signed-number storage, color-code parsing, ASCII/Unicode conversion or floating point analysis, you need a more specialized tool.
- It does not convert HEX color codes to RGB.
- It does not convert ASCII or Unicode characters.
- It does not apply two’s complement or signed integer rules.
- It does not analyze floating point representation.
- It does not perform bit/byte or endian conversion.
Frequently Asked Questions
What is number base conversion?
It is the process of writing the same numeric value in another base. For example, decimal 15 is written as 1111 in binary.
Which bases does this tool support?
The runtime is designed to convert between bases from 2 to 36.
What does binary mean?
Binary is the base-2 number system and uses only the symbols 0 and 1.
What do A–F mean in hexadecimal?
In hexadecimal, A means 10, B means 11, C means 12, D means 13, E means 14 and F means 15.
Does this tool convert HEX colors?
No. It converts number bases. HEX color decoding is a separate RGB color operation.