Truncate Number
Truncation cuts precision toward zero and does not apply round-up or tie rules.
Rounding Calculator
Enter a number and choose your rounding preferences
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🧪 Quick Examples
📋 How It Works
How It Works
1
Step 1
Choose the place value or decimal precision to keep.
2
Step 2
Remove all digits beyond that position.
3
Step 3
Return the toward-zero result.
📊 Examples
Worked Examples
Examples show deterministic cut-off behavior for positive and negative inputs.
| Input | Target | Method | Result |
|---|---|---|---|
| 2.99 | Nearest Whole Number | Truncate (Toward Zero) | 2 |
| -2.99 | Nearest Whole Number | Truncate (Toward Zero) | -2 |
| 45.6789 | Nearest Hundredth (2 dp) | Truncate (Toward Zero) | 45.67 |
Tips
Common Mistakes
Avoid these frequent rounding errors when validating outputs.
- Calling truncate a nearest-value rounding method.
- Confusing truncate with floor for negatives.
- Using truncation where tie-aware rounding is required.
- Dropping expected output precision in display formatting.
❓ FAQ
Frequently Asked Questions
Is truncation the same as rounding?
No. Truncation removes digits without choosing the nearest value.
How is truncate different from floor?
Truncate goes toward zero, while floor goes toward negative infinity.
When should truncation be used?
Use truncation when exact cut-off behavior is required by your process.
Can truncation be applied to large place values?
Yes. It works for tens, hundreds, thousands, and other supported places.