12.35
Rounding Calculator
Use this free rounding calculator to round numbers to decimal places, significant figures, or place values with nearest, up, down, and truncate methods.
- Method
- Nearest
- Precision
- 2 decimal places
- Difference
- 0.0044
Steps
- Start with 12.3456.
- Use decimal places mode with 2 decimal places.
- Apply nearest rounding.
- The rounded value is 12.35.
How to use the rounding calculator
- Choose decimal places, significant figures, or place value mode.
- Choose nearest, round up, round down, or truncate.
- Enter the number and precision, then press Round value.
- Review the rounded answer, difference, steps, examples, and recent answers.
Common uses
Round money, measurements, and everyday decimal values.
Round study answers to a required number of significant figures.
Round whole numbers to tens, hundreds, thousands, or decimal places.
Compare nearest, round up, round down, and truncate methods.
Examples
98,800
1,800
Frequently asked questions
Quick answers about decimal places, significant figures, place values, rounding methods, and privacy.
What rounding modes are supported?
The calculator supports decimal places, significant figures, and place value rounding.
How do I round to a place value?
Use place-value mode. Exponent 1 means nearest 10, exponent 2 means nearest 100, exponent 3 means nearest 1,000, and exponent -2 means nearest 0.01.
What is the difference between nearest, up, down, and truncate?
Nearest rounds to the closest value. Up uses the next higher rounding value, down uses the next lower rounding value, and truncate drops extra digits toward zero.
Can I round negative numbers?
Yes. The calculator accepts negative numbers. For nearest rounding, half values move away from zero.
Why can rounded decimals sometimes look surprising?
Browsers store many decimals in binary floating-point form. The calculator cleans display values, but very precise decimal work can still have normal floating-point limits.
Is my rounding history private?
Yes. Recent rounded values stay only in the current browser tab while you use the page. They are not sent to a server.