Matematika

Hex Converter

Number Base Converter

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Enter Decimal Number

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What is Hex Converter?

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A hexadecimal converter converts hex numbers to decimal, binary, and octal. Hex is ubiquitous in computing — used for memory addresses, colour codes, and encoding.

Calkulon makes complex calculations simple — built for students and everyday problem-solvers.

Formulė

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f(x)Hex to decimal: Σ (digit × 16^position); Decimal to hex: repeatedly divide by 16, collect remainders

Variable Legend

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Symbol	Vardas	Vienetas	Aprašymas
H	Hexadecimal value	—	0-9, A-F
D	Decimal value	—	—
p	Digit position (rightmost = 0)	—	—

How to Hex Converter

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1Hex to decimal: each digit × 16ⁿ, sum all
2Hex to binary: each hex digit = 4 bits directly
3Digits: 0–9 then A=10, B=11, C=12, D=13, E=14, F=15
40xFF = 255 decimal = 11111111 binary

Worked Examples

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Example 1

Given:Hex: 2A

Rezultatas:Decimal: 42 (2×16+10); Binary: 00101010

Real-World Applications

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Web design colour selection

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Programming and debugging

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Network MAC addresses

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Computer memory addressing

Hex Digit Reference

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Hex	Decimal	Binary
A	10	1010
B	11	1011
C	12	1100
D	13	1101
E	14	1110
F	15	1111
FF	255	11111111

Frequently Asked Questions

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Why use hexadecimal?

Base 16 is compact: 1 hex digit = 4 bits. More readable than binary for memory addresses, colour codes.

What are common hex uses?

Web colours (#FF0000 = red), memory addresses, MAC addresses, Unicode escape sequences.

How do I convert hex F9 to decimal?

F=15, 9=9. (15×16¹) + (9×16⁰) = 240 + 9 = 249 decimal.

References

›Hexadecimal — Wikipedia

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Hexadecimal vs Decimal

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Reviewed October 2026

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