Device Independent Pixels

Updated on Feb 19, 2026

Device Independent Pixels (DIPs) is a unit type used in the Document Processing libraries in the following cases:

• RadSpreadProcessing - setting the width of the columns and the height of the rows.
• RadPdfProcessing - setting the FontSize of TextFragment or TextProperties.
• RadWordsProcessing - setting the FontSize of a Run.

UnitHelper class

The UnitHelper class provides a bunch of methods for converting from DIPs to other measurement units and vice versa (e.g. points, picas, centimeters, inches, etc.).

Convert From Dip to Unit:

• DipToPoint: Converts dips to points.
• DipToPointI: Converts dips to points.
• DipToPica: Converts dips to picas.
• DipToCm: Converts dips to centimeters.
• DipToMm: Converts dips to millimeters.
• DipToInch: Converts dips to inches.
• DipToTwip: Converts dips to twips.
• DipToEmu: Converts dips to EMUs.
• DipToTwipI: Converts dips to twips.
• DipToTwipF: Converts dips to twips.
• DipToUnit: Converts DIPs to units.

Convert From Unit to Dip:

• PointToDip: Converts points to dips.
• PicaToDip: Converts picas to dips.
• EmuToDip: Converts EMUs to dips.
• CmToDip: Converts centimeters to dips.
• MmToDip: Converts millimeters to dips.
• InchToDip: Converts inches to dips.
• TwipToDip: Converts twips to dips.
• TwipToDipF: Converts twips to dips.
• TwipToDipI: Converts twips to dips.
• UnitToDip: Converts Units to dips.

Most of the methods follow the same pattern for converting units:

Example 1 shows how to obtain row height as DIPs and convert it to Points.

Example 1: Convert from DIP to Point

csharp

	var rowHeightInDips = worksheet.Rows[0].GetHeight().Value.Value;
	var rowHeightInPoints = UnitHelper.DipToPoint(rowHeightInDips);

except the DipToUnit and UnitToDip methods which accepts not only the units but the UnitType as well as a parameter:

Example 2 shows how to convert from Point to DIP and set the row height.

Example 2: Convert from Point to DIP

csharp

	double dips = UnitHelper.UnitToDip(60, UnitType.Point);
	RowHeight newRowHeight = new RowHeight(dips, isCustom: true);
	worksheet.Rows[0].SetHeight(newRowHeight);