📊 Excel Rounding Functions Guide

Master INT, TRUNC, ROUND, ROUNDUP, ROUNDDOWN, EVEN, ODD & MROUND

What Are Excel Rounding Functions?

Excel provides powerful functions for rounding numbers and converting them to integers. Whether you’re working with financial data, scientific calculations, or statistical analysis, understanding these functions is essential for accurate data manipulation. This comprehensive guide covers all major Excel rounding functions with interactive examples you can try right now.

🧮 Interactive Rounding Calculator

Enter a Number:

Number of Digits (for ROUND functions):

Multiple (for MROUND):

INT

The INT function rounds a number down to the nearest integer. It’s particularly useful when you need whole numbers and always want to round down.

=INT(number)

Examples:

=INT(8.9) → 8

=INT(-8.9) → -9

=INT(123.456) → 123

Use Case: Converting decimal hours to whole hours, calculating full units from partial quantities.

TRUNC

TRUNC truncates a number to a specified number of decimal places by removing digits. Unlike INT, it simply cuts off decimals without rounding.

=TRUNC(number, [num_digits])

Examples:

=TRUNC(8.9) → 8

=TRUNC(-8.9) → -8

=TRUNC(123.456, 2) → 123.45

Use Case: Removing unwanted decimal places, financial calculations requiring truncation.

ROUND

ROUND rounds a number to a specified number of digits using standard rounding rules (5 and above rounds up).

=ROUND(number, num_digits)

Examples:

=ROUND(2.15, 1) → 2.2

=ROUND(2.149, 1) → 2.1

=ROUND(123.456, 2) → 123.46

Use Case: General-purpose rounding, displaying prices, statistical calculations.

ROUNDUP

ROUNDUP always rounds a number up, away from zero, to a specified number of digits.

=ROUNDUP(number, num_digits)

Examples:

=ROUNDUP(3.2, 0) → 4

=ROUNDUP(123.451, 2) → 123.46

=ROUNDUP(-3.2, 0) → -4

Use Case: Conservative estimates, calculating minimum required resources.

ROUNDDOWN

ROUNDDOWN always rounds a number down, toward zero, to a specified number of digits.

=ROUNDDOWN(number, num_digits)

Examples:

=ROUNDDOWN(3.2, 0) → 3

=ROUNDDOWN(123.459, 2) → 123.45

=ROUNDDOWN(-3.2, 0) → -3

Use Case: Pessimistic forecasts, calculating maximum available quantities.

EVEN

EVEN rounds a number up to the nearest even integer. Negative numbers are rounded away from zero.

=EVEN(number)

Examples:

=EVEN(1.5) → 2

=EVEN(3) → 4

=EVEN(-1) → -2

Use Case: Packaging calculations requiring even pairs, row numbering in alternating formats.

ODD

ODD rounds a number up to the nearest odd integer. Negative numbers are rounded away from zero.

=ODD(number)

Examples:

=ODD(1.5) → 3

=ODD(2) → 3

=ODD(-2) → -3

Use Case: Scheduling odd-day events, mathematical calculations requiring odd numbers.

MROUND

MROUND rounds a number to the nearest multiple of a specified value. Perfect for working with standard increments.

=MROUND(number, multiple)

Examples:

=MROUND(10, 3) → 9

=MROUND(11, 3) → 12

=MROUND(1.23, 0.05) → 1.25

Use Case: Pricing to nearest quarter, time rounding to 15-minute intervals, packaging by standard quantities.

💡 Pro Tips & Best Practices

Tip 1: Use negative num_digits in ROUND functions to round to the left of the decimal point. For example, =ROUND(1234, -2) returns 1200.

Tip 2: INT and TRUNC differ with negative numbers. INT rounds down (toward negative infinity), while TRUNC cuts toward zero.

Tip 3: For financial calculations, combine ROUND with currency formatting to ensure displayed values match calculated values.

Tip 4: MROUND is excellent for time calculations. Use =MROUND(A1, “0:15”) to round times to the nearest 15 minutes.

Tip 5: When dealing with floating-point precision issues, use ROUND to clean up results: =ROUND(A1*B1, 2).