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The Flutter Box and Whisker Chart is used to visualize a group of numerical data through their quartiles. It is also referred as box plot chart. Box plots may also have lines extending vertically from the boxes (whiskers) indicating variability outside the upper and lower quartiles. You can create beautiful, animated, real-time and high-performance box and whisker chart that also supports the interactive features such as zooming and panning, trackball, crosshair, tooltip and selection.

Beautiful Flutter Box and Whisker Chart

Key features

Shows the support of Box plot mode in Flutter Box and Whisker chart

Box plot mode

The Flutter Box and Whisker Chart supports different types of rendering mode such us exclusive, inclusive, and normal.

Shows the support of Outlier in Flutter Box and Whisker chart


Represent the values beyond the minimum and maximum values of the data. The outlier is usually represented by a circle in the Flutter Box and Whisker Chart.

Shows the show mean support in Flutter Box and Whisker chart

Show mean

The Flutter box-and-whisker chart allows you to enable or disable displaying the average value of the box plot.

Shows the color and thickness customization in Flutter Box and Whisker chart


Customize the color of the box plot and outliers by using APIs to make them visually unique. The box plot can be customized with a gradient color.

Code example

Easily get started with the Flutter Box and Whisker 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 = [
      [12, 22, 22, 23, 25, 25, 25, 26, 27, 27, 28, 28, 29],
      [22, 24, 25, 30, 32, 34, 36, 38, 39, 41, 40, 56],
      [26, 27, 28, 30, 32, 34, 35, 37, 35, 37, 45],
      [21, 26, 27],
      [26, 27, 29, 32, 34, 35, 36, 37, 38, 39, 41, 43, 58],
    _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: <ChartSeries<_ChartData, String>>[
              BoxAndWhiskerSeries<_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 List<double> y;

Learning resources

Navigate to GitHub code used to configure the Flutter Box and Whisker chart

GitHub Code

The Flutter Box and Whisker chart configuration code is available in GitHub.

Navigate to the options available in User Guide to customize the Flutter Box and Whisker chart

Box and Whisker Chart User Guide

Learn available options to customize the Flutter Box and Whisker Chart.

Navigate to the API references documentation of Flutter Box and Whisker chart

Box and Whisker Chart API Reference

Explore the Flutter Box and Whisker Chart APIs.

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