How Average, Median, Mode, Range & Standard Deviation Calculator Works & When to Use It
Calculate Arithmetic Mean (Average), Median, Min, Max, Sum, Count, and Sample/Population Standard Deviation from any list of numbers. Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server.
Step-by-Step Instructions
- Enter the labelled values or choose an example.
- Run the tool and review the result and its assumptions.
- Copy or download the result. Reset restores defaults; Undo restores the previous settings.
Worked Examples
| Scenario | Input Parameters | Example Output |
|---|---|---|
| 6 Sales Figures: 120, 150, 180, 210, 240, 300 (Avg = 200) | {"numbers": "120, 150, 180, 210, 240, 300"} |
Average: 200 | Median: 195 (Sum: 1,200) |
| 5 Exam Scores: 78, 85, 92, 88, 97 (Avg = 88) | {"numbers": "78, 85, 92, 88, 97"} |
Average: 88 | Median: 88 (Sum: 440) |
Formula, reference and effective date
- Reference Standard / Authority: Standard Descriptive Statistics Formulas
- Applicable Period / Effective Date: 2025-2026
- Privacy & Execution Mode: Browser-Local Only (Zero Server Upload) (None (Pure Vanilla JS))
Important Limitations & Edge Cases
Accepts comma, space, or newline-separated numbers. Check the assumptions and output against your intended task before relying on the result.
Frequently Asked Questions (FAQs)
1. Is Average, Median, Mode, Range & Standard Deviation Calculator completely free to use without registration?
Yes. Every tool on Easy Tools Today is 100% free with no paywall, no sign-up, and no subscription required.
2. Are the numbers or files I enter uploaded to any server?
Calculations and file processing run in this browser tab. The tool does not send working inputs or files to our hosting server.
3. What should I check before using the result?
Check the assumptions and output against your intended task before relying on the result. Reference: Standard Descriptive Statistics Formulas.