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The Blazor HeatMap Chart is a graphical representation of two-dimensional data where the values are represented with gradient or solid color variations. The data points are drawn as HeatMap cells using Scalable Vector Graphics (SVG) rendering.

Dealing with large data

The Blazor HeatMap Chart can display a large volume of data and provides the best initial load performance and optimized memory usage.

Bubble HeatMap Chart

The Blazor Bubble HeatMap Chart, or the matrix bubble chart, visualizes the data using the variations in bubble attributes such as size, color, and sector.

Bubble HeatMap Chart in Blazor HeatMap Chart

Calendar HeatMap

The Blazor Calendar HeatMap visualizes time series data, with each data point representing a value bound to a specific time.


Populate data in the Blazor HeatMap Chart using different axis types: numeric, category, and date-time.

Numeric axis

Use a numeric axis to represent numeric data in a HeatMap.

Date-time axis

Use a date-time axis to represent time series data in a HeatMap. Similarly, display dates and times as axis labels with different formats.

Category axis

Use a category axis to represent non-numerical data in a HeatMap and display text labels instead of numbers.

Customizable axis

The Blazor HeatMap Chart allows you to customize the axis elements to make an axis more readable.

Blazor HeatMap Chart with inversed origin or inversed axes

Inverse axis

Achieve RTL layout by reversing the axis labels. This swaps the higher and lower ranges of an axis.

Blazor HeatMap Chart with axes displayed in opposed position

Opposed position

Arrange the axes smartly by moving them to positions opposite to their default positions.

Axis intervals displayed in Blazor HeatMap Chart

Axis intervals

Set axis labels with regular intervals, hiding adjacent labels across all types of axes.

Label rotation of the Blazor HeatMap Chart axes

Axis label rotation

Rotate axis labels clockwise or counterclockwise to any desired angle.

Axis label formatting in Blazor HeatMap Chart

Axis label formatting

Customize the axis label text using the available formatting options.

HeatMap cell customization

Customize the default appearance of a cell or data point using the available formatting options.

Data labels in Blazor HeatMap Chart

Data label

Toggle visibility or format the data labels to display custom text along with the cell values.

Blazor HeatMap Chart cell with customized borders


Change the borders and cell spacing by customizing the border settings.

Blazor HeatMap Chart with data label template

Data label template

Render any HTML element as a label for the cells in the HeatMap.


Customize the default color settings of the HeatMap cells with gradient or solid custom colors.

Cell color range customization

Color ranges allow a color to be applied to specific ranges in heatmap cells.

Blazor HeatMap Chart with cell color range customization.


Display additional information about data points in the Blazor HeatMap Chart using a legend.

Blazor HeatMap Chart with a gradient legend and a list-type legend


Choose between a gradient pointer and a list-type legend for improving data points readability.

Legend placement in Blazor HeatMap Chart


Place the legend anywhere in the chart area to make it fit best on a page.

Legend paging enabled in Blazor HeatMap Chart


This component enables paging when the legend items exceed the legend bounds. Then, each legend item can be viewed by navigating between the pages.

Legend title customization in Blazor HeatMap Chart.

Legend title

A legend title provides information about the HeatMap legend.

Empty points

Handle missed or undefined data values with empty data points.

Blazor HeatMap Chart with empty data points


Select single or multiple cells using keyboard, mouse, and touch interactions.

Selection in Blazor HeatMap Chart


Display tooltips with additional information on mouse hover over data points.

Cell tooltip enabled in Blazor HeatMap Chart

Blazor HeatMap Chart code example

Easily get started with the Blazor HeatMap Chart using a few simple lines of C# code as demonstrated below. Also explore our Blazor HeatMap Chart example that shows you how to render and configure the HeatMap Chart in Blazor.

@using Syncfusion.Blazor

@using Syncfusion.Blazor.HeatMap
<SfHeatMap DataSource="@HeatMapData">
    <HeatMapTitleSettings Text="Sales Revenue per Employee (in 1000 US$)">
    <HeatMapCellSettings ShowLabel="true" TileType="CellType.Rect">

    int[,] GetDefaultData()
      HeatMapData = GetDefaultData();

Other supported frameworks

HeatMap Chart is also available in JavaScript, Angular, React, and Vue frameworks that are built from their own TypeScript libraries. Check out the different HeatMap Chart platforms from the following links:

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Blazor Components – 85+ UI and DataViz Components

Frequently Asked Questions

  • Display simple or large matrix data graphically with color variations in SVG or canvas.
  • Analyze data patterns of the subject quickly with multiple views such as rectangle, bubble, calendar, and sector heatmaps.
  • One of the best Blazor HeatMap chart components on the market, offering a feature-rich UI.
  • Simple configuration and API.
  • Supports all modern browsers.
  • Touch-friendly and responsive.
  • Extensive demos, documentation, and videos help you learn quickly and get started with Blazor HeatMap Chart.

We do not sell the Blazor HeatMap Chart separately. It is only available for purchase as part of the Syncfusion team license. This contains over 1,800 components and frameworks, including the Blazor HeatMap Chart. The price of the team license starts at $395 per month for 5 developers, and includes support and updates until the subscription expires. In addition, we might offer discounts based on currently active promotions. Please contact our product specialists today to see if you qualify for any additional discounts.

You can find our Blazor HeatMap Chart demo here.

No, our 1,800+ components and frameworks for web, mobile, and desktop, including our Blazor HeatMap Chart, are not sold individually. They are only available as part of a team license. However, we have competitively priced the product, so it only costs a little bit more than what some other vendors charge for their HeatMap chart component alone. We have also found that, in our experience, our customers usually start off using one of our products and then expand to several products quickly, so we felt it was best to offer all 1,800+ components and frameworks for a subscription fee that starts at $395 per month for a team of 5 developers. Additionally, we might be able to offer discounts based on currently active promotions. Please contact our product specialists today to see if you qualify for any additional discounts.

No, this is a commercial product and requires a paid license. However, a free Community License is also available for companies and individuals whose organizations have less than $1 million USD in annual gross revenue, 5 or fewer developers, and 10 or fewer total employees.

A good place to start would be our comprehensive getting started documentation.

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