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[`DurationValue`](DurationValue) › [`parseFromString`](DurationValue/parseFromString)
## DurationValue.parseFromString() method
Create a new DurationValue using an ISO 8601 duration. See [https://en.wikipedia.org/wiki/ISO\_8601\#Durations](https://en.wikipedia.org/wiki/ISO_8601#Durations) for duration format details.
1.10.0
**Signature:**
```typescript
static parseFromString(input: string): DurationValue | null;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| <code>input</code> | <code>string</code> | |
**Returns:**
[`DurationValue`](DurationValue)` | null`