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

```ts
function millisToDateIso(
  value: number &
    Brand<"NonNaN"> &
    Brand<"Finite"> &
    Brand<"Int"> &
    Brand<"NonNegative"> &
    Brand<"LessThan281474976710655"> &
    Brand<"Millis">,
): string & Brand<"DateIso">;
```

Defined in: [packages/common/src/Time.ts:414](https://github.com/evoluhq/evolu/blob/dd96d79f1dbe9a49fa12ce8e0aa7d3d0177795ca/packages/common/src/Time.ts#L414)

Converts [Millis](https://evolu.dev/docs/api-reference/common/Time/variables/Millis) to [DateIso](https://evolu.dev/docs/api-reference/common/Type/variables/DateIso).

This is a safe cast because [Millis](https://evolu.dev/docs/api-reference/common/Time/variables/Millis) guarantees a valid timestamp range
that always produces a valid ISO string.