Device Independent Pixels

Updated on Jun 5, 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 several methods for converting from DIPs to other measurement units and vice versa (for example, points, picas, centimeters, and inches).

Convert from DIP to Unit

Method	Description
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

Method	Description
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);

The DipToUnit and UnitToDip methods accept not only the units but also the UnitType 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);