# What is float and double in C#?

## What is float and double in C#?

Use float or double? The precision of a floating point value indicates how many digits the value can have after the decimal point. The precision of float is only six or seven decimal digits, while double variables have a precision of about 15 digits.

**Is double A floating data type?**

Double is more precise than float and can store 64 bits, double of the number of bits float can store….Float and double.

Floating point type | Memory requirement | Range |
---|---|---|

Float | 4 bytes | ±3.40282347E+38F i.e. 6-7 significant digits |

Double | 8 bytes | ±1.79769313486231570E+308 i.e. 15-16 significant digits |

**Should I use float or double C#?**

double has higher precision, whereas floats take up less memory and are faster. In general you should use float unless you have a case where it isn’t accurate enough. On typical modern computers, double is just as fast as float.

### What is double data type in C#?

A double type variable is a 64-bit floating data type C, C++, C# and many other programming languages recognize the double as a type. A double type can represent fractional as well as whole values. It can contain up to 15 digits in total, including those before and after the decimal point.

**What is float C#?**

Float is a shortened term for “floating point.” By definition, it’s a fundamental data type built into the compiler that’s used to define numeric values with floating decimal points. C, C++, C# and many other programming languages recognize float as a data type. Other common data types include int and double.

**Why use a float over a double?**

A float uses less memory than a double, so if you don’t need your number to be the size of a double, you might as well use a float since it will take up less memory. Just like you wouldn’t use a bus to drive yourself and a friend to the beach… you would be far better off going in a 2 seater car.

#### What is double float in C?

Double is also a datatype which is used to represent the floating point numbers. It is a 64-bit IEEE 754 double precision floating point number for the value. It has 15 decimal digits of precision.

**How is double and float stored in memory?**

Floats are stored in 32 bits of space and doubles are stored in 64 bits. This means that the largest number you can have is limited to the half the largest positive number you can fit in that many binary digits. This allows for negitive numbers.

**Is float faster than double?**

Floats are faster than doubles when you don’t need double’s precision and you are memory-bandwidth bound and your hardware doesn’t carry a penalty on floats. They conserve memory-bandwidth because they occupy half the space per number.