Memória array (bytes)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The array memory calculator (bytes) helps determine the memory required to store an array in programming languages. It multiplies the number of elements (n) by the size of each element (in bytes), using the formula: **total memory = n × element_size**. This is useful for developers optimizing memory usage in applications.
For example, if an array contains 100 integer elements (4 bytes each), the calculation will be 100 × 4 = 400 bytes. The tool assumes all elements have the same size, typical in static or dynamic arrays with homogeneous elements.
Note that element size varies depending on the data type (e.g., float, char, string). In 32-bit or 64-bit systems, primitive types might have different sizes. Always confirm the compiler or language-specific sizes before applying this calculation.
Frequently asked questions
Why is the result given in bytes?
Bytes are the fundamental unit of storage in computing. All data types are measured in bytes, making it easier to compare and optimize memory usage in systems.
How does it work if elements have different sizes?
The calculator assumes homogeneous elements. For heterogeneous arrays, calculate each type separately or use custom structures.
Can I use this for dynamic arrays?
Yes, as long as you know the maximum number of elements or estimate an average for benchmarking.
Does element size depend on the system?
Yes, primitive types may have different sizes in 32-bit or 64-bit systems. Check the language or compiler documentation.