---
title: minimumSignificantDigits
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/numberformatter/minimumsignificantdigits
---

# minimumSignificantDigits

The minimum number of significant digits for the number formatter.

## Declaration

```swift
var minimumSignificantDigits: Int { get set }
```

## Discussion

Discussion You must set the usesSignificantDigits property to true in order for this property to affect formatting behavior. By default, the minimum number of significant digits is 1. The following code demonstrates the effect of setting minimumSignificantDigits when formatting various numbers: var numberFormatter = NumberFormatter() numberFormatter.usesSignificantDigits = true numberFormatter.minimumSignificantDigits = 4

numberFormatter.string(from: 123) // 123.0 numberFormatter.string(from: 123.45) // 123.45 numberFormatter.string(from: 100.23) // 100.23 numberFormatter.string(from: 1.2300) // 1.230 numberFormatter.string(from: 0.000123) // 0.0001230

## See Also

### Configuring Significant Digits

- [usesSignificantDigits](foundation/numberformatter/usessignificantdigits.md)
- [maximumSignificantDigits](foundation/numberformatter/maximumsignificantdigits.md)