IT operations

SIEM Log Volume Estimator

Estimate daily log volume and storage needs for SIEM planning. Use this Networking and IT tool to enter your numbers, review the result, and understand the key assumptions before making the next decision.

What you get
A focused calculator, clear explanation, common questions, and useful next tools.
Quick intro
Calculator
Result
Explanation
Common questions
Related tools

Calculator tool

How this calculator works
The result depends on the numbers you enter and the assumptions shown below.

Daily ingest is estimated as events per second times average event size times 86,400 seconds, then adjusted for indexing overhead. Retention storage multiplies that daily ingest by the retention period.

Review the inputs carefully and treat the output as an estimate. For decisions involving money, taxes, health, law, or security, compare the result with trusted professional guidance when needed.

Frequently asked questions

What is EPS?

EPS means events per second, a common SIEM sizing metric.

Should compression be included?

Yes. Indexing overhead increases stored volume, while compression can reduce it. Use the overhead field for your SIEM vendor's observed multiplier.