[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Number](https://evolu.dev/docs/api-reference/common/Number) › isBetween

```ts
function isBetween(min: number, max: number): Predicate<number>;
```

Defined in: [packages/common/src/Number.ts:151](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Number.ts#L151)

Creates a predicate that checks if a number is within a range, inclusive.

### Example

```ts

const isBetween10And20 = isBetween(10, 20);

assertTrue(isBetween10And20(20));
assertFalse(isBetween10And20(25));
```