Skip to content

Hex Calculator

New

Calculators

Calculate with signed hexadecimal integers and inspect exact decimal, binary, and octal results. Includes arithmetic, bitwise operators, and bounded bit shifts without floating-point rounding.

Tool workspace

Exact signed integer arithmetic. Division truncates toward zero; remainder follows the first operand. Bitwise operations use signed integers without a fixed word width. Shift counts use the selected base.

Enable JavaScript to activate these controls and process your input in the browser.

📝

How to Use Hex Calculator

Use the controls above, then check the example and limitations below.

1

Select a base

Choose hexadecimal, decimal, binary, or octal for both operands.

2

Enter integers

Use signed digits, optionally with the matching 0x, 0b, or 0o prefix.

3

Inspect each base

Select an operator and read or copy the exact result in four bases.

💡

What is Hex Calculator & How Does It Work?

Hexadecimal represents each group of four binary bits with one digit from 0 through F. Use this calculator to inspect integer arithmetic and bit masks in bases 2, 8, 10, and 16. Both operands use the selected input base, and each result is shown in all four bases.

The calculation uses BigInt, so integers beyond JavaScript’s ordinary safe-number range remain exact. Fractions are rejected. Division truncates toward zero, and negative bitwise values follow signed, unlimited-width integer semantics rather than a fixed CPU register width.

📐

Hex place value

Formula Equation:FF₁₆ = 15 × 16¹ + 15 × 16⁰ = 255₁₀

Each position is a power of 16. Digits A–F represent decimal 10–15.

Step-by-Step Worked Example:

FF + 1 = 100 (hex)
255 + 1 = 256 (decimal)
⚡

Key Features & Benefits

✓

Exact large integers

Up to 4,096 digits per operand without floating-point rounding.

✓

Arithmetic and bit masks

Addition, subtraction, multiplication, integer division, remainder, AND, OR, XOR and shifts.

🎯

Common Use Cases

✦

Carry checks

FF + 1 = 100 in hex, which is 256 in decimal.

✦

Mask inspection

F0 OR 0F = FF; FF AND 0F = 0F.

Frequently asked questions

Yes. It uses BigInt instead of floating-point numbers and accepts up to 4,096 digits per operand. FF + 1 produces hex 100 and decimal 256.

This is an integer calculator. Division truncates toward zero: -7 / 2 gives -3. The remainder operation gives -1 for -7 % 2.

No. They use signed BigInt values without a fixed word width. Shift counts must be 0–4,096 and are interpreted in the same selected base as the other operand.

Related Calculators & Companion Tools

Explore complementary utilities for your workflow

View all in Calculators →

Scientific Calculator

Scientific calculator with trig, logs, and memory.

Popular

Binary to Text Converter

Decode binary bytes into readable ASCII & UTF-8 text.

New

Board Foot Calculator

Calculate board feet, quantity and optional lumber cost.

Popular

Age Calculator

Calculate exact age from birthdate to today.