When to use this calculator
Find the integer floor of a real number. For negative numbers, floor moves toward negative infinity.
Explore the algebra & number calculators for other questions in this topic. For a related calculation, use the Geometric Mean Growth Rate Calculator: Find a constant two-period growth rate equivalent to two different returns.
PUTTING IT INTO PRACTICE
Floor Function: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Number | -2.3 |
| Result | -3 |
- Check the input labels and enter the example values above.
- Apply the relationship: Floor = greatest integer no larger than x.
- The result is -3 , rounded for display.
How to interpret your result
For negative numbers, floor moves toward negative infinity.
Identify whether the question asks for one term, a total or a count of possible selections. Sequences use a fixed difference or ratio. In counting problems, order and replacement determine the correct model.
Frequently asked questions
Do combinations and permutations count the same thing?
No. Combinations ignore the order of selection; permutations count different orders separately.
When is the floor function calculator useful?
Find the integer floor of a real number. For negative numbers, floor moves toward negative infinity.
How do I use the floor function calculator?
Enter number. The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Floor = greatest integer no larger than x.
What should I check before using the result?
For negative numbers, floor moves toward negative infinity.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
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