How to Measure Text in WordsProcessing .NET Framework

Updated on Jun 9, 2026

Environment

Version	Product	Author
2024.1.305	RadWordsProcessing	Yoan Karamanov

Description

This article demonstrates how to measure text in WordsProcessing in the .NET Framework environment.

Solution

Create a Telerik.Windows.Documents.Fixed.Model.Editing.Block instance with the same content and font properties as the Run you want to insert. Then call the Measure method of the block to obtain its measurements:

csharp

using System;
using System.Diagnostics;
using System.IO;
using System.Windows;
using System.Windows.Media;
using Telerik.Windows.Documents.Fixed.Model.Editing;
using Telerik.Windows.Documents.Flow.FormatProviders.Docx;
using Telerik.Windows.Documents.Flow.Model;
using Telerik.Windows.Documents.Flow.Model.Editing;
using Telerik.Windows.Documents.Spreadsheet.Model;

namespace ConsoleNetFramework
{
    internal class Program
    {
        static void Main(string[] args)
        {
            RadFlowDocument flowDocument = new RadFlowDocument();
            RadFlowDocumentEditor editor = new RadFlowDocumentEditor(flowDocument);
            Section section = editor.InsertSection();

            #region Verdana, font size 16
            //Verdana, font size 16
            FontFamily fontFamily = new FontFamily("Verdana");
            string text = "This is a sample text - Verdana";
            int fontSize = 16;

            //FontStyles.Normal, FontWeights.Normal
            Paragraph paragraph = section.Blocks.AddParagraph();
            Size measurementInfo = MeasureText(text, fontFamily, fontSize, FontStyles.Normal, FontWeights.Normal);
            Run run = paragraph.Inlines.AddRun(text);
            run.Properties.FontFamily.LocalValue = new ThemableFontFamily(fontFamily);
            run.FontStyle = FontStyles.Normal;
            run.FontWeight = FontWeights.Normal;
            run.FontSize = fontSize;
            paragraph.Inlines.AddRun($" Width: {Math.Round(measurementInfo.Width, 2)}, Height: {Math.Round(measurementInfo.Height, 2)}");

            //FontStyles.Italic, FontWeights.Normal
            paragraph = section.Blocks.AddParagraph();
            measurementInfo = MeasureText(text, fontFamily, fontSize, FontStyles.Italic, FontWeights.Normal);
            run = paragraph.Inlines.AddRun(text);
            run.Properties.FontFamily.LocalValue = new ThemableFontFamily(fontFamily);
            run.FontStyle = FontStyles.Italic;
            run.FontWeight = FontWeights.Normal;
            run.FontSize = fontSize;
            paragraph.Inlines.AddRun($" - Width: {Math.Round(measurementInfo.Width, 2)}, Height: {Math.Round(measurementInfo.Height, 2)}");

            //FontStyles.Normal, FontWeights.Bold
            paragraph = section.Blocks.AddParagraph();
            measurementInfo = MeasureText(text, fontFamily, fontSize, FontStyles.Normal, FontWeights.Bold);
            run = paragraph.Inlines.AddRun(text);
            run.Properties.FontFamily.LocalValue = new ThemableFontFamily(fontFamily);
            run.FontStyle = FontStyles.Normal;
            run.FontWeight = FontWeights.Bold;
            run.FontSize = fontSize;
            paragraph.Inlines.AddRun($" - Width: {Math.Round(measurementInfo.Width, 2)}, Height: {Math.Round(measurementInfo.Height, 2)}");

            //FontStyles.Italic, FontWeights.Bold
            paragraph = section.Blocks.AddParagraph();
            measurementInfo = MeasureText(text, fontFamily, fontSize, FontStyles.Italic, FontWeights.Bold);
            run = paragraph.Inlines.AddRun(text);
            run.Properties.FontFamily.LocalValue = new ThemableFontFamily(fontFamily);
            run.FontStyle = FontStyles.Italic;
            run.FontWeight = FontWeights.Bold;
            run.FontSize = fontSize;
            paragraph.Inlines.AddRun($" - Width: {Math.Round(measurementInfo.Width, 2)}, Height: {Math.Round(measurementInfo.Height, 2)}");
            #endregion

            #region Arial, font size 12
            //Arial, font size 12
            fontFamily = new FontFamily("Arial");
            fontSize = 12;
            text = "This is a sample text - Arial";

            //FontStyles.Normal, FontWeights.Normal
            paragraph = section.Blocks.AddParagraph();
            measurementInfo = MeasureText(text, fontFamily, fontSize, FontStyles.Normal, FontWeights.Normal);
            run = paragraph.Inlines.AddRun(text);
            run.Properties.FontFamily.LocalValue = new ThemableFontFamily(fontFamily);
            run.FontStyle = FontStyles.Normal;
            run.FontWeight = FontWeights.Normal;
            run.FontSize = fontSize;
            paragraph.Inlines.AddRun($" - Width: {Math.Round(measurementInfo.Width, 2)}, Height: {Math.Round(measurementInfo.Height, 2)}");

            //FontStyles.Italic, FontWeights.Normal
            paragraph = section.Blocks.AddParagraph();
            measurementInfo = MeasureText(text, fontFamily, fontSize, FontStyles.Italic, FontWeights.Normal);
            run = paragraph.Inlines.AddRun(text);
            run.Properties.FontFamily.LocalValue = new ThemableFontFamily(fontFamily);
            run.FontStyle = FontStyles.Italic;
            run.FontWeight = FontWeights.Normal;
            run.FontSize = fontSize;
            paragraph.Inlines.AddRun($" - Width: {Math.Round(measurementInfo.Width, 2)}, Height: {Math.Round(measurementInfo.Height, 2)}");

            //FontStyles.Normal, FontWeights.Bold
            paragraph = section.Blocks.AddParagraph();
            measurementInfo = MeasureText(text, fontFamily, fontSize, FontStyles.Normal, FontWeights.Bold);
            run = paragraph.Inlines.AddRun(text);
            run.Properties.FontFamily.LocalValue = new ThemableFontFamily(fontFamily);
            run.FontStyle = FontStyles.Normal;
            run.FontWeight = FontWeights.Bold;
            run.FontSize = fontSize;
            paragraph.Inlines.AddRun($" - Width: {Math.Round(measurementInfo.Width, 2)}, Height: {Math.Round(measurementInfo.Height, 2)}");

            //FontStyles.Italic, FontWeights.Bold
            paragraph = section.Blocks.AddParagraph();
            measurementInfo = MeasureText(text, fontFamily, fontSize, FontStyles.Italic, FontWeights.Bold);
            run = paragraph.Inlines.AddRun(text);
            run.Properties.FontFamily.LocalValue = new ThemableFontFamily(fontFamily);
            run.FontStyle = FontStyles.Italic;
            run.FontWeight = FontWeights.Bold;
            run.FontSize = fontSize;
            paragraph.Inlines.AddRun($" - Width: {Math.Round(measurementInfo.Width, 2)}, Height: {Math.Round(measurementInfo.Height, 2)}");
            #endregion

            // Save as docx and open
            DocxFormatProvider docxFormatProvider = new DocxFormatProvider();
            string outputPath = "output.docx";
            File.WriteAllBytes(outputPath, docxFormatProvider.Export(flowDocument));

            var psi = new ProcessStartInfo()
            {
                FileName = outputPath,
                UseShellExecute = true
            };
            Process.Start(psi);
        }

        static Size MeasureText(string text, FontFamily fontFamily, double fontSize, FontStyle fontStyle, FontWeight fontWeight)
        {
            Block block = new Telerik.Windows.Documents.Fixed.Model.Editing.Block();
            block.TextProperties.FontSize = fontSize;
            block.InsertText(fontFamily, fontStyle, fontWeight, text);

            return block.Measure();
        }
    }
}

Result

See Also

• RadPdfProcessing Fonts
• Measure Text in .NET Standard