Math & Trig

ROUND Formula

ROUND rounds a number to a specified number of decimal places. It uses standard rounding rules (5 and above rounds up). ROUND is essential for financial calculations where you need exactly 2 decimal places, for cleaning up floating-point results, or for rounding to the nearest whole number, ten, or hundred.

Syntax

ROUND(number, num_digits)
ParameterDescription
number Parameter of the ROUND function.
num_digits Parameter of the ROUND function.
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Examples

Round to 2 decimal places (currency)

Formula
=ROUND(A2*0.0825, 2)
Returns: 8.25 — rounds the tax calculation to exactly 2 decimal places

Round to nearest whole number

Formula
=ROUND(3.7, 0)
Returns: 4 — rounds 3.7 to the nearest integer

Round to nearest hundred

Formula
=ROUND(1234, -2)
Returns: 1200 — negative decimal places round to the left of the decimal point

Common Errors

#VALUE!

The first argument is text, not a number. Ensure the cell contains a numeric value or use VALUE() to convert.

Tips

ROUND vs ROUNDUP vs ROUNDDOWN

ROUND uses standard rounding. ROUNDUP always rounds away from zero. ROUNDDOWN always rounds toward zero (like truncation).

Financial precision

Always ROUND currency calculations: =ROUND(price*quantity*tax_rate, 2). Floating-point math can produce results like 10.005000001.

Negative decimal places

Use -1 to round to nearest 10, -2 for nearest 100, -3 for nearest 1000. Useful for budgets and estimates.

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