# MySQL LOG10() function

## LOG10() function

**MySQL LOG10() **returns the natural logarithm of a number to the base 10. The equivalent expression of LOG10(N) is LOG(10,N).

This function is useful in -

- This is useful in scenarios where the data naturally aligns with the decimal system, such as in financial calculations, measurements, and scientific experiments.
- The LOG10() function is essential in chemistry for calculating the pH of a solution, which is a measure of its acidity or basicity. The pH scale is logarithmic in base 10.
- LOG10() is used in acoustics to calculate the decibel level, a logarithmic scale used to quantify the intensity of sound.
- Base-10 logarithms are used to compare the relative sizes or magnitudes of numbers.
- In engineering fields like electrical engineering, civil engineering, and mechanical engineering, base-10 logarithms are frequently used in calculations involving quantities like voltage, power, and structural properties.
- The LOG10() function is used to convert numbers from scientific notation (exponential form) to standard decimal notation.

**Syntax:**

LOG10(N);

Where **N** is a number

**Syntax Diagram:**

**MySQL Version: 8.0**

**Pictorial presentation of MySQL LOG10() function**

**Example of MySQL LOG10() function**

Code:

```
SELECT LOG10(1000);
```

**Explanation:**

The above MySQL statement returns the natural logarithm of 1000 as specified in the argument to the base 10.

Output:

mysql> SELECT LOG10(1000); +-------------+ | LOG10(1000) | +-------------+ | 3 | +-------------+ 1 row in set (0.00 sec)

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