CalculationTime

Range Calculator

Find the range of up to six numbers, with the minimum, maximum and difference shown for classroom, score and measurement checks.

Live math canvas

Your numbers, formula and explanation together

Range Calculator: 99 difference between maximum and minimum. Range Calculator uses the declared inputs to produce a transparent default result. Value 1: 12; Value 2: 18; Value 3: 9; Value 4: 24; primary comparison: 12 and 18.

Formula applied

The exact method behind this answer

CalculationTime keeps the method visible so the number can be checked instead of blindly trusted.

Range = maximum value − minimum value. For the default set: maximum 24 − minimum 9 = 15.
  1. Apply the formulaRange = maximum value − minimum value. For the default set: maximum 24 − minimum 9 = 15.99 difference between maximum and minimumRange Calculator uses the declared inputs to produce a transparent default result. Value 1: 12; Value 2: 18; Value 3: 9; Value 4: 24; primary comparison: 12 and 18.

Your live breakdown

Current inputs in the calculation

These values come from the controls above and update when the calculator changes.

Value 1
12
First number in the data set.
Value 2
18
Second number in the data set.
Value 3
9
Third number in the data set.
Value 4
24
Fourth number in the data set.
Value 5
15
Fifth number in the data set.
Value 6
21
Sixth number in the data set. Enter 0 only when zero is a real value.

Resulting answer

99 difference between maximum and minimum

Range Calculator uses the declared inputs to produce a transparent default result. Value 1: 12; Value 2: 18; Value 3: 9; Value 4: 24; primary comparison: 12 and 18.

Answer
99 difference between maximum and minimum
Live support
Range Calculator uses the declared inputs to produce a transparent default result. Value 1: 12; Value 2: 18; Value 3: 9; Value 4: 24; primary comparison: 12 and 18.

Assumptions used

What this answer assumes

Range shows spread only. Compare with average, median and standard deviation when the shape of the data matters.

  • All six visible input boxes are included in the range calculation.
  • A zero input is treated as a real data value, not as a blank or missing value.
  • The range measures only the full spread from smallest to largest; it does not describe the middle or typical value.
  • This is transparent descriptive statistics, not a probability model or formal uncertainty analysis.

Master’s Tip

How to use the result well

Master’s Tip: always read the range beside the actual minimum and maximum. A single extreme value can make the spread look large even when most values are tightly grouped.

Printable record

What belongs in the saved calculation

Save the inputs, result, formula, assumptions, page URL and date together so the calculation can be reviewed later.

Value 1
12
First number in the data set.
Value 2
18
Second number in the data set.
Value 3
9
Third number in the data set.
Value 4
24
Fourth number in the data set.

Embeddable calculator

Embed this calculator

Copy a clean iframe version with the required CalculationTime attribution link built in.

Formula

Range = maximum value − minimum value. For the default set: maximum 24 − minimum 9 = 15.

Worked example

For 12, 18, 9, 24, 15 and 21, the smallest value is 9 and the largest value is 24. Range = 24 − 9 = 15.

Professional note

Master’s Tip: always read the range beside the actual minimum and maximum. A single extreme value can make the spread look large even when most values are tightly grouped.

Regional and unit assumptions

Standard or basis: descriptive statistics using the ordinary range formula, maximum minus minimum. Every visible input is included with equal status.

Assumptions and limitations

Methodology & Accuracy

How this calculator is checked

CalculationTime pages are built around visible arithmetic: the formula, assumptions, worked example and practical limitations are shown so the result can be checked rather than simply trusted.

Formula used

Range = maximum value − minimum value. For the default set: maximum 24 − minimum 9 = 15.

Standard or basis

Standard or basis: descriptive statistics using the ordinary range formula, maximum minus minimum. Every visible input is included with equal status.

Where a calculator follows a named legal, trade or industry standard, that standard is cited visibly. Otherwise the page uses transparent general arithmetic and states its limits.

Master's Tip

Master’s Tip: always read the range beside the actual minimum and maximum. A single extreme value can make the spread look large even when most values are tightly grouped.

Related calculators

These cards are resolved from calculator data, category context and live-route status so the page links to useful next steps without hand-built link clutter.

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Questions

How do you calculate range?

Find the largest value in the data set, find the smallest value, then subtract the smallest from the largest.

What is the range of 12, 18, 9, 24, 15 and 21?

The minimum is 9 and the maximum is 24, so the range is 24 minus 9, which equals 15.

Does zero count when finding range?

Yes. If zero is entered, this calculator treats it as a real value and includes it when finding the minimum and maximum.

Is range the same as average?

No. The average describes a central value. The range describes the spread from the smallest value to the largest value.

Can one outlier affect the range?

Yes. Because range uses only the minimum and maximum, one unusually high or low value can change the result strongly.

Calculation note

The range is one of the first spread measures students meet because it is easy to audit: identify the endpoints, then subtract. Its strength is clarity; its weakness is that it depends entirely on the two most extreme values.

Range is an endpoint check

Unlike the mean or standard deviation, the range ignores every middle value. That makes it fast and easy to explain, especially in classroom worksheets, test-score checks, temperature logs and measurement records.

Why the minimum and maximum should stay visible

A report that says only “range 15” hides the endpoints that created it. Showing minimum 9 and maximum 24 keeps the arithmetic traceable and helps readers decide whether the spread came from a normal set or an outlier.

When range is not enough

Two data sets can have the same range but very different distributions. Use the range as a quick spread check, then compare it with mean, median or standard deviation when the middle pattern matters.

Sources and further readingNIST/SEMATECH e-Handbook of Statistical Methods: Measures of scale