calculatorsonline.co.uk
Quartile Calculator
Find Q1, median, Q3 and IQR for five numbers.
π Free Online Tool
β‘ Instant Results
π Clear Comparison
π 100% Free Tool
Median
Compare Your Options And Get Clear Answers
Find Q1, median, Q3 and IQR for five numbers.
Quartile Estimator
Enter your numbers below for an instant estimate.
0
π‘ Tip: Quartiles split sorted data into four parts.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Quartile Quick Guide
Typical values for reference.
| Quartile | Share below | Name | Use |
|---|---|---|---|
| Q1 | 25% | Lower | Spread |
| Q2 | 50% | Median | Centre |
| Q3 | 75% | Upper | Spread |
| IQR | Q3-Q1 | Spread | Outliers |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Quartile Calculator FAQ
Answers to common questions about this calculator.
Q3 minus Q1, the range of the middle half.
It gives a quick estimate of quartile from the values you enter.
No. It is a planning estimate, so check important figures with a professional or official source.
Yes. Edit any field and the result updates when you calculate.