Round to thousandths (e.g. 3.14159 ≈ 3.142) – online calculator

Enter the number:

Result of rounding to thousandths:

0.00

Rules for rounding to thousandths

Mathematical rounding of a number to the nearest thousandths.

Third digit after the dot (thousandths of the number):

  • does not change – if the fourth digit after the dot is less than 5. (0; 1; 2; 3; 4);
  • increases by 1 – if the fourth digit after the dot is greater than or equal to 5. (5; 6; 7; 8; 9).

4673.45785 ≈ 4673.459

7 is the thousandths of the number, the third digit after the dot;

8 is the fourth digit after the dot;

9 is the rounded thousandths of the dot.

Examples

Round the number 1.2222 to thousandths.

1.2222 ≈ 1.222. The fourth digit after the dot 2 is less than 5.


Round the number 1.2225 to thousandths.

1.2225 ≈ 1.223. The fourth digit after the dot is 5.


Round the number 1.2228 to thousandths.

1.2228 ≈ 1.223. The fourth digit after the dot 8 is greater than 5.