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Throughput to IOPS Formula
The following equation is used to calculate the IOPS.
IOPS = (T / (KB/IO) ) * 1024
- Where IOPS is the input output operations per second
- T is the through put (MB/s)
- KB/IO is the kilobytes per input-output operation
To calculate IOPS from throughput, divide the throughput by the kilobytes per IO, then multiply by 1024.
| Throughput (MB/s) | IOPS | Data per Operation (KB) |
|---|---|---|
| 1 | 256 | 4 |
| 5 | 1280 | 4 |
| 10 | 2560 | 4 |
| 20 | 5120 | 4 |
| 25 | 6400 | 4 |
| 50 | 12800 | 4 |
| 75 | 19200 | 4 |
| 100 | 25600 | 4 |
| 150 | 38400 | 4 |
| 200 | 51200 | 4 |
| 250 | 64000 | 4 |
| 300 | 76800 | 4 |
| 400 | 102400 | 4 |
| 500 | 128000 | 4 |
| 600 | 153600 | 4 |
| 800 | 204800 | 4 |
| 1000 | 256000 | 4 |
| 1500 | 384000 | 4 |
| 2000 | 512000 | 4 |
| 3000 | 768000 | 4 |
| *Formula: IOPS = Throughput(MB/s) × 1024 / I/O size (KB). Assumes 1 MB = 1024 KB and a 4 KB block size. | ||
What is a IOPS?
Definition:
IOPS is short for input-output operations per second. It measures the total data transfer per second in a typical input-output process.
How to Calculate IOPS from Throughput?
Example Problem:
The following example outlines the steps and information needed to calculate IOPS.
First, determine the total throughput. For this example problem, the total throughput is measured to be 100 MB/s.
Next, determine the KB/IO. The kilobytes per operation, in this case, is measured to be 50.
Finally, calculate the IOPOS using the formula above:
IOPS = (T / (KB/IO) ) * 1024
IOPS = (100/ 50) * 1024
IOPS = 2048 IOPS
