📊 Standard Deviation Calculator
Calculate standard deviation, variance, and other statistical measures
Enter Data
Count: 8 values
Standard Deviation
Std Deviation (σ/s):
5.2372
Variance (σ²/s²):
27.4286
Additional Statistics
Mean (μ/x̄):
18
Count (n):
8
Sum of Squares
Sum of Squares (SS):
192
Sum:
144
Coefficient of Variation
CV (%):
29.10%
CV = (σ/μ) × 100
How to Use This Calculator
- Enter your values into the input fields provided
- Ensure all numbers are in the correct format (no special characters)
- Click "Calculate" or wait for automatic calculation
- Review the results displayed below your inputs
- Adjust values as needed to explore different scenarios
- All calculations happen instantly in your browser
Frequently Asked Questions
How accurate is this calculator?
This tool uses standard mathematical formulas to ensure accuracy for typical use cases. Results are calculated with high precision.
Is this tool free to use?
Yes! This calculator is completely free with no hidden costs, subscriptions, or limitations. Use it as often as you need.
Do I need to create an account?
No account needed. The tool works entirely in your browser without requiring signup or personal information.
Does this work on mobile devices?
Yes, this calculator is fully responsive and works on smartphones, tablets, and all desktop browsers.
Is my data private?
Absolutely. All processing happens locally in your browser. Your data never leaves your device and is not stored on any server.