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The Flutter Bubble chart visualizes data in 3 dimensions similar to scatter chart. The position and radius of a circle is determined based on X and Y and size values, respectively. You can create beautiful, animated, real-time and high-performance scatter chart that also supports the interactive features such as zooming and panning, trackball, crosshair, tooltip and selection.

Beautiful Flutter Bubble Chart

Key features

Show the radius customization in Flutter Bubble chart

Bubble radius

Control the minimum and maximum radius of the overall bubble series.

Show the gradient support in Flutter Bubble chart


Apply gradient colors to visualize data in different colors, improving the readability and appearance of the Flutter Bubble Chart.

Shows the color and stroke customization in Flutter Bubble chart

UI customization

Customize the color and border of the Flutter Bubble Chart using the built-in APIs to make it visually unique.

Code example

Easily get started with the Flutter Bubble Chart using a few simple lines of DART code example as demonstrated below,

import 'package:flutter/material.dart';
import 'package:syncfusion_flutter_charts/charts.dart';

void main() {
  return runApp(_ChartApp());

class _ChartApp extends StatelessWidget {
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(primarySwatch: Colors.blue),
      home: _MyHomePage(),

class _MyHomePage extends StatefulWidget {
  // ignore: prefer_const_constructors_in_immutables
  _MyHomePage({Key? key}) : super(key: key);

  _MyHomePageState createState() => _MyHomePageState();

class _MyHomePageState extends State<_MyHomePage> {
  late List<_ChartData> data;
  late TooltipBehavior _tooltip;

  void initState() {
    data = [
      _ChartData('CHN', 12),
      _ChartData('GER', 15),
      _ChartData('RUS', 30),
      _ChartData('BRZ', 6.4),
      _ChartData('IND', 14)
    _tooltip = TooltipBehavior(enable: true);

  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: const Text('Syncfusion Flutter chart'),
        body: SfCartesianChart(
            primaryXAxis: CategoryAxis(),
            primaryYAxis: NumericAxis(minimum: 0, maximum: 40, interval: 10),
            tooltipBehavior: _tooltip,
            series: <CartesianSeries<_ChartData, String>>[
              BubbleSeries<_ChartData, String>(
                  dataSource: data,
                  xValueMapper: (_ChartData data, _) => data.x,
                  yValueMapper: (_ChartData data, _) => data.y,
                  name: 'Gold',
                  color: Color.fromRGBO(8, 142, 255, 1))

class _ChartData {
  _ChartData(this.x, this.y);

  final String x;
  final double y;

Learning resources

Navigate to GitHub code used to configure the Flutter bubble chart

GitHub Code

The Flutter Bubble Chart configuration code is available in GitHub.

Navigate to the options available in User Guide to customize the Flutter bubble chart

Flutter Bubble Chart User Guide

Learn available options to customize the Flutter Bubble Chart.

Navigate to the API references documentation of Flutter bubble chart

Flutter Bubble Chart API Reference

Explore the Flutter Bubble Chart APIs.

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