Virtual Memory Map Visualizer

Prof. Andreas Heil, Hochschule Heilbronn

Explore how an address fits into a simplified process memory layout inspired by classic operating-systems diagrams: code, heap, free space, and stack.

Pick 16-bit, 32-bit, or 64-bit, type an address, and the page will highlight where that address lands in both the full address space and a local byte-level view.

Teaching Model Process view of memory

Input Hex, decimal, or binary

Zoom Local byte window

Code / text

Heap

Free space

Stack

Controls

Enter an address and jump to it. The input accepts values like 0x7fff, 1024, or 0b1010.

Address Size Address

Quick Examples

Reading the Diagram

Lower addresses are near the top. Higher addresses are near the bottom, where the stack lives in this simplified model.

Real systems are more complex, but this layout is useful for showing why the heap grows upward and the stack grows downward.

Maximum Address 0xffffffff

Address Space Size 4 Gi addresses

0x0000

Stack Function calls, return addresses, and local variables. Usually grows downward.

Free Space Room between the stack and heap.

Heap Dynamically allocated memory. Usually grows upward.

Code Program instructions and static data at the low end of memory.

Current width: 32-bit virtual addresses

Overview

The marker shows where the selected address lives in the process address space, with low addresses at the top and high addresses at the bottom.

Selected Address

Region

Offset In Region

Percent Through Space

Region Explanation

64-bit Note

For teaching, this page treats 64-bit as a very large virtual address space. Real processors often use a subset of all possible 64-bit addresses.

Local Byte Window

This shows 64 consecutive bytes in memory, centered on your selected address. The offset tells you how many bytes away each cell is from your address. Click any cell to jump to that address.

Binary View

Every address is just a binary number. Larger address sizes allow more unique addresses.