Variance & Standard Deviation Calculator
Compute variance and standard deviation — population & sample.
How to use Variance & Standard Deviation Calculator
Follow these steps — everything happens instantly in your browser.
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Step 1. Enter numbers separated by commas, spaces or newlines.
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Step 2. Choose population or sample variance.
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Step 3. See variance and standard deviation update instantly.
Why use this tool
Private by design
All processing happens locally in your browser. Open DevTools → Network and you'll see zero file uploads. Ever.
Instant
No upload wait, no queue, no server round-trip. Results appear the moment you drop a file.
Free & unlimited
No accounts, no watermarks, no daily caps. Use it as many times as you like, forever.
Works everywhere
Desktop, tablet or phone — every tool is responsive and installable as a PWA for offline use.
Frequently asked questions
Everything you might want to know about variance & standard deviation calculator.
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