A walkthrough, end to end.
- 1
Enter two hexadecimal values (digits 0–9 and A–F, or prefix 0x).
- 2
Choose add, subtract, multiply, or divide.
- 3
See the result in hex with decimal, binary, and octal forms.
Hexadecimal arithmetic
Base-16 numbers use 0–9 and A–F where A=10, B=11, …, F=15. Each position is a power of 16.
What you can do with this.
Hex color codes
Decode #FF5733 into RGB(255, 87, 51) by converting each pair.
Memory address math
Compute offsets like 0x1000 + 0x40 quickly during debugging.
Reading hex dumps
Convert hex bytes to decimal to interpret binary file content.
Embedded development
Translate register values between hex and binary for bit fields.
Cryptography sanity checks
Convert hex hashes to binary to count bits or compare.
Hex math homework
Verify base-16 arithmetic without manual digit-by-digit work.
Cross-base teaching
Show students the relationship between hex, binary, and decimal.
Hex calculator 2026 — what's current
Hex remains essential for low-level programming. A calculator wins for quick conversions.
Frequently asked.
No, A–F and a–f are both accepted.
Yes — leading 0x or 0X is stripped automatically.
Hex is integer-only here. Use the basic calculator for decimals.
No. Everything runs in your browser.