Rounding Calculator
Round a number to a chosen number of decimal places using half-away-from-zero rounding.
Round to decimal places
Tips: Use a non-negative integer for decimal places. Scientific notation is accepted in the number field.
FAQ
Values are rounded half away from zero: 1.5 becomes 2, −1.5 becomes −2. This matches common "school" rounding for positive and negative numbers.
It is how many digits appear after the decimal separator. For example, rounding 3.14159 to 2 decimal places gives 3.14.
Floating-point arithmetic in the browser can introduce tiny binary representation errors. For critical financial rounding, consider dedicated decimal libraries.