Rounding Calculator
Free rounding calculator — round, floor, ceil, or truncate any number to 0–10 decimal places instantly.
Rounding Calculator
Rounding Calculator
Round, floor, ceil, or truncate to any decimal place
Result
Smart Insights
Personalized takeaways from your numbers.
Real-Life Examples
2 decimal places
Round down
The Formula Behind It
Round(n, d) = round n to d decimal placesVariables
- Round(n, d) = n rounded to d decimal places
How It Works
- Enter the number to round.
- Set decimal places (0–10).
- Choose round, floor, ceil, or truncate mode.
About Rounding Calculator
The Rounding Calculator rounds numbers to any decimal place using four modes: standard round (half up), floor (always down), ceil (always up), and truncate (cut off digits). Ideal for currency, measurements, statistics, and reporting.
Rounding Modes
Round: Standard rounding — 2.5 rounds to 3. Floor: Always rounds down — floor(3.99) = 3. Ceil: Always rounds up — ceil(3.01) = 4. Truncate: Removes digits without adjustment — truncate(3.99, 1) = 3.9.
Common Uses
Round currency amounts to 2 decimal places, simplify Percentage Calculator results, prepare GST Calculator outputs, or clean up Mean Median Mode Calculator statistics for reports.
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Frequently Asked Questions
How do I round to 2 decimal places?
Look at the third decimal digit. If it is 5 or greater, round up. 3.456 rounds to 3.46.
What is the difference between round and truncate?
Round considers the next digit for adjustment. Truncate simply cuts off digits without changing the value. truncate(3.99, 1) = 3.9, round(3.99, 1) = 4.0.
What does floor do?
Floor always rounds down to the nearest value at the specified precision. floor(3.99, 0) = 3.
What does ceil do?
Ceil always rounds up. ceil(3.01, 0) = 4.
How do bankers round?
Standard rounding (round half up) is used here. 2.5 rounds to 3, 3.5 rounds to 4.
Can I round currency amounts?
Yes. Set decimal places to 2 for cents/paise rounding on any monetary value.