# How to Round Numbers in R (5 Examples)

You can use the following functions to round numbers in R:

• round(x, digits = 0): Rounds values to specified number of decimal places.
• signif(x, digits = 6): Rounds values to specified number of significant digits.
• ceiling(x): Rounds values up to nearest integer.
• floor(x): Rounds values down to nearest integer.
• trunc(x): Truncates (cuts off) decimal places from values.

The following examples show how to use each of these functions in practice.

### Example 1: round() Function in R

The following code shows how to use the round() function in R:

```#define vector of data
data <- c(.3, 1.03, 2.67, 5, 8.91)

#round values to 1 decimal place
round(data, digits = 1)

 0.3 1.0 2.7 5.0 8.9
```

### Example 2: signif() Function in R

The following code shows how to use the signif() function to round values to a specific number of significant digits in R:

```#define vector of data
data <- c(.3, 1.03, 2.67, 5, 8.91)

#round values to 3 significant digits
signif(data, digits = 3)

 0.30 1.03 2.67 5.00 8.91```

### Example 3: ceiling() Function in R

The following code shows how to use the ceiling() function to round values up to the nearest integer:

```#define vector of data
data <- c(.3, 1.03, 2.67, 5, 8.91)

#round values up to nearest integer
ceiling(data)

 1 2 3 5 9
```

### Example 4: floor() Function in R

The following code shows how to use the floor() function to round values down to the nearest integer:

```#define vector of data
data <- c(.3, 1.03, 2.67, 5, 8.91)

#round values down to nearest integer
floor(data)

 0 1 2 5 8```

### Example 5: trunc() Function in R

The following code shows how to use the trunc() function to truncate (cut off) decimal places from values:

```#define vector of data
data <- c(.3, 1.03, 2.67, 5, 8.91)

#truncate decimal places from values
trunc(data)

 0 1 2 5 8```