Enter the total capacity, number of elements, and size of each element into the calculator to determine the missing variable.

Array Capacity Calculator

RAID Array
Programming Array
How Many Files Fit?

Plan disk arrays and see usable capacity, redundancy, and efficiency.

Raw Capacity
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Usable Capacity
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Used for Redundancy
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Efficiency
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Fault tolerance: –
Notes: With mixed-size drives, capacity is conservatively limited by the smallest drive in the set. Nested levels (50/60) require groups. Base 1000 matches most vendor specs; Base 1024 matches OS binary units.

Array Capacity Formula

The following formula is used to calculate the total capacity, number of elements, or size of each element in an array.

C = N * S

Variables:

  • C is the total capacity in bytes
  • N is the number of elements
  • S is the size of each element in bytes

To calculate the total capacity, multiply the number of elements by the size of each element. To find the number of elements, divide the total capacity by the size of each element. To find the size of each element, divide the total capacity by the number of elements.

What is an Array Capacity?

Array capacity refers to the total amount of memory allocated for an array in a computer program. This capacity is determined by the number of elements the array can hold and the size of each element. Understanding array capacity is crucial for efficient memory management and avoiding issues such as buffer overflows or memory wastage. Arrays are commonly used in programming to store collections of data, and knowing their capacity helps in optimizing performance and resource utilization.

How to Calculate Array Capacity?

The following steps outline how to calculate the Array Capacity.

  1. First, determine the number of elements in the array (N).
  2. Next, determine the size of each element in bytes (S).
  3. Finally, calculate the total capacity using the formula C = N * S.
  4. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Number of elements in the array (N) = 100

Size of each element (S) = 4 bytes

Total Capacity (C) = 400 bytes