I am using GeometryReader to calculate the size of font to use to fit several lines of text, however it is always too big. What can be wrong with my calculation? Here's a simply Playground import SwiftUI import PlaygroundSupport struct MainView : View { var body: some View { VStack { SomeView() .frame(width: 508.0, height: 246.5) } } } struct SomeView: View { let newData = ["1", "2", "3", "4", "5", "6", "7", "8"] var lines: Int { newData.count } var body: some View { GeometryReader { geometry in VStack(alignment: .leading, spacing: 0) { ForEach(0..<lines) { idx in Text(newData[idx]) .padding(0) } } .font(.system(size: geometry.size.height / CGFloat(lines))) .onAppear { print(geometry.size) print(lines) print(geometry.size.height / CGFloat(lines)) } } } } PlaygroundPage.current.setLiveView(MainView()) This gives me this result which I need to show all 8 lines:  The GeometryReader correctly reports the height of the box to be 246.5 and the number of lines to be 8 which results in a 30.8125 font size. It seems the font size needs some additional padding but how do I calculate this? I want to be able to supply an unknown amount of data and have it fill the box. (Well I am actually using a LazyVGrid which is suffering the same issue).