How does rounding work?

Half up: digits 5 and above round up; 4 and below round down.

What decimal places can I use?

0 = whole number, 1 = one decimal, 2 = two decimals, etc. (0–20).

Yes. Standard JavaScript number precision applies (about 15–17 significant digits).

Round a number to a specified number of decimal places (half up).

Number

Decimal places

How does rounding work?: Half up: digits 5 and above round up; 4 and below round down.
What decimal places can I use?: 0 = whole number, 1 = one decimal, 2 = two decimals, etc. (0–20).
Does it handle large numbers?: Yes. Standard JavaScript number precision applies (about 15–17 significant digits).

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