**Contents**show

## What is the range of float and double data type?

In this article

Type Name | Bytes | Range of Values |
---|---|---|

float | 4 | 3.4E +/- 38 (7 digits) |

double |
8 |
1.7E +/- 308 (15 digits) |

long double | same as double | Same as double |

wchar_t | 2 | 0 to 65,535 |

## What is range of double data type in Java?

float: 4 bytes, IEEE 754. Covers a range from 1.40129846432481707e-45 to 3.40282346638528860e+38 (positive or negative). double: 8 bytes IEEE 754. Covers a range from **4.94065645841246544e-324d to 1.79769313486231570e+308d (positive or negative)**. char: 2 bytes, unsigned, Unicode, 0 to 65,535.

## What is the size and range of the double data type?

Holds signed IEEE 64-bit (8-byte) double-precision floating-point numbers that range in value from **-1.79769313486231570E+308 through -4.94065645841246544E-324 for negative values** and from 4.94065645841246544E-324 through 1.79769313486231570E+308 for positive values.

## What is difference between float and double?

A Double and Float are both used to represent decimal numbers, but they do so in slightly different ways. … For Float this means that it only has four decimal places while **Double still has twelve**.

## Should I use float or double Java?

You should **use double instead of float for precise** calculations, and float instead of double when using less accurate calculations. Float contains only decimal numbers, but double contains an IEEE754 double-precision floating point number, making it easier to contain and computate numbers more accurately.

## What is float data type example?

Floating-point numbers are numbers that have fractional parts (usually expressed with a decimal point). You should use a floating-point type in Java programs whenever you need a number with a decimal, such as 19.95 or 3.1415. Java has two primitive types for floating-point numbers: float: Uses 4 bytes.

## What is double data type example?

Double (double-precision **floating-point**) variables are stored as IEEE 64-bit (8-byte) floating-point numbers ranging in value from: -1.79769313486231E308 to -4.94065645841247E-324 for negative values. 4.94065645841247E-324 to 1.79769313486232E308 for positive values.

## What are the five data types?

**Data types**

- String (or str or text). Used for a combination of any characters that appear on a keyboard, such as letters, numbers and symbols.
- Character (or char). Used for single letters.
- Integer (or int). Used for whole numbers.
- Float (or Real). …
- Boolean (or bool).

## What is double data type?

double: The double data type is **a double-precision 64-bit IEEE 754 floating point**. Its range of values is beyond the scope of this discussion, but is specified in the Floating-Point Types, Formats, and Values section of the Java Language Specification. For decimal values, this data type is generally the default choice.

## Why we use double data type?

Double **is more precise than float and can store 64 bits**, double of the number of bits float can store. Double is more precise and for storing large numbers, we prefer double over float. For example, to store the annual salary of the CEO of a company, double will be a more accurate choice.