If numbers must add up correctly or balance, use decimal. This includes any financial storage or calculations, scores, or other numbers that people might do by hand. If the exact value of numbers is not important, use double for speed.

Table of Contents

## Should I use decimal or double?

If numbers must add up correctly or balance, use decimal. This includes any financial storage or calculations, scores, or other numbers that people might do by hand. If the exact value of numbers is not important, use double for speed.

## Why is more decimal places more accurate?

Because the potential error is greater, the measure is less precise. Thus, as the length of the unit increases, the measure becomes less precise. The number of decimal places in a measurement also affects precision.

**What is more precise than a double?**

In C and related programming languages, long double refers to a floating-point data type that is often more precise than double precision though the language standard only requires it to be at least as precise as double . As with C’s other floating-point types, it may not necessarily map to an IEEE format.

**What is the difference of decimal and double?**

The fundamental difference is that the double is a base 2 fraction, whereas a decimal is a base 10 fraction. double stores the number 0.5 as 0.1, 1 as 1.0, 1.25 as 1.01, 1.875 as 1.111, etc. decimal stores 0.1 as 0.1, 0.2 as 0.2, etc.

### How accurate are doubles?

In terms of number of precision it can be stated as double has 64 bit precision for floating point number (1 bit for the sign, 11 bits for the exponent, and 52* bits for the value), i.e. double has 15 decimal digits of precision.

### What number is more accurate?

Precision and accuracy are defined by significant digits. Accuracy is defined by the number of significant digits while precision is identified by the location of the last significant digit. For instance the number 1234 is more accurate than 0.123 because 1234 had more significant digits.

**Which decimal is more accurate?**

Roughly speaking, more digits to the right of the decimal point means more precision. The more digits you track on the right of the decimal point, the less you can have on the left of the decimal point. Both sides of the decimal point need to fit into 128 bits (in the case of a decimal).

**How accurate is double?**

A double which is usually implemented with IEEE 754 will be accurate to between 15 and 17 decimal digits. Anything past that can’t be trusted, even if you can make the compiler display it.

#### Can double have decimal?

#### Is float more accurate than double?

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.

**How accurate is double precision?**

Double precision numbers are accurate up to sixteen decimal places but after calculations have been done there may be some rounding errors to account for. In theory this should affect no more than the last significant digit but in practice it is safer to rely upon fewer decimal places.

**Can a double be a decimal?**

## Can a double have decimal places?

A double holds 53 binary digits accurately, which is ~15.9545898 decimal digits. The debugger can show as many digits as it pleases to be more accurate to the binary value. Or it might take fewer digits and binary, such as 0.1 takes 1 digit in base 10, but infinite in base 2.

## What measurement is more precise?

Precision means how exact a measurement is. When the units are the same, the measurement with more decimal places is more precise.

**Are decimals more precise than fractions?**

Fractions are more precise … It may take a huge numerator and denominator to represent some numbers, but even a simple little number like 1/3 can’t be represented exactly by any number of decimal places (unless you use a notation to indicate a repeating decimal, in which case it is just as exact as a fraction).

**Why are decimal numbers more accurate than other numbers?**

Put in layman’s term, the reason that decimal type is more accurate is because decimal types are encoded base 10 (which is the number system humans use), as opposed to base 2 (which is the number system computers use).

### What is the difference between decimals and double?

decimal, decimal, decimal. Accept no substitutes. The most important factor is that double, being implemented as a binary fraction, cannot accurately represent many decimal fractions (like 0.1) at all and its overall number of digits is smaller since it is 64-bit wide vs. 128-bit for decimal.

### Is float more accurate than double and decimal?

Float is less accurate than Double and Decimal. Double is more accurate than Float but less accurate than Decimal. Decimal is more accurate than Float and Double. For documentation related to Float , double and Decimal, kindly visit here.

**Why don’t banks use decimal instead of double?**

Finally, financial applications often have to follow specific rounding modes (sometimes mandated by law). decimal supports these; double does not. Show activity on this post. The way I’ve been stung by using the wrong type (a good few years ago) is with large amounts: You run out at 1 million for a float. 9 trillion with a double.