Rounding Calculator
Round any number to the decimal places you need, using standard rounding, rounding down (floor) or rounding up (ceiling).
Show solution steps
What is the Rounding Calculator?
A rounding calculator shortens a number to a set number of decimal places. Rounding goes to the nearest value, floor always rounds down, and ceiling always rounds up.
How to Calculate
The number is scaled by 10 to the power of the decimal places, the chosen operation is applied, then it's scaled back.
Formula
round(value × 10ⁿ) ÷ 10ⁿ
How to Use
- Enter your details in the fields above.
- The result updates instantly as you type.
- Use Copy, Print or Download PDF to save your result.
Frequently Asked Questions
What is the difference between floor and ceiling?
Floor always rounds toward the lower value (2.9 u2192 2), while ceiling always rounds toward the higher value (2.1 u2192 3), regardless of the decimal part.
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