---
title: roundingIncrement
framework: swift
role: symbol
role_heading: Instance Property
path: swift/duration/unitsformatstyle/fractionalpartdisplaystrategy/roundingincrement
---

# roundingIncrement

A multiple by which a formatter rounds a fractional part of a duration.

## Declaration

```swift
var roundingIncrement: Double?
```

## See Also

### Working with strategy properties

- [minimumLength](swift/duration/unitsformatstyle/fractionalpartdisplaystrategy/minimumlength.md)
- [maximumLength](swift/duration/unitsformatstyle/fractionalpartdisplaystrategy/maximumlength.md)
- [roundingRule](swift/duration/unitsformatstyle/fractionalpartdisplaystrategy/roundingrule.md)