diff --git a/cmd/cassowary/cli.go b/cmd/cassowary/cli.go
index 742f71a..2226007 100644
--- a/cmd/cassowary/cli.go
+++ b/cmd/cassowary/cli.go
@@ -203,6 +203,7 @@ func validateCLI(c *cli.Context) error {
 		TLSConfig:         tlsConfig,
 		PromURL:           c.String("prompushgwurl"),
 		Cloudwatch:        c.Bool("cloudwatch"),
+		Boxplot:           c.Bool("boxplot"),
 		Histogram:         c.Bool("histogram"),
 		ExportMetrics:     c.Bool("json-metrics"),
 		ExportMetricsFile: c.String("json-metrics-file"),
@@ -283,6 +284,11 @@ func runCLI(args []string) {
 					Aliases: []string{"json-metrics"},
 					Usage:   "outputs metrics to a json file by setting flag to true",
 				},
+				&cli.BoolFlag{
+					Name:    "b",
+					Aliases: []string{"boxplot"},
+					Usage:   "enable to generate a boxplot as png",
+				},
 				&cli.BoolFlag{
 					Aliases: []string{"histogram"},
 					Usage:   "enable to generate a histogram as png",
diff --git a/go.mod b/go.mod
index 8c5186e..90ccc71 100644
--- a/go.mod
+++ b/go.mod
@@ -9,6 +9,6 @@ require (
 	github.com/mattn/go-isatty v0.0.10 // indirect
 	github.com/prometheus/client_golang v1.3.0
 	github.com/schollz/progressbar v1.0.0
-	github.com/urfave/cli/v2 v2.2.0
+	github.com/urfave/cli/v2 v2.3.0
 	gonum.org/v1/plot v0.8.1
 )
diff --git a/go.sum b/go.sum
index 1bd2148..3156139 100644
--- a/go.sum
+++ b/go.sum
@@ -108,8 +108,8 @@ github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXf
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
-github.com/urfave/cli/v2 v2.2.0 h1:JTTnM6wKzdA0Jqodd966MVj4vWbbquZykeX1sKbe2C4=
-github.com/urfave/cli/v2 v2.2.0/go.mod h1:SE9GqnLQmjVa0iPEY0f1w3ygNIYcIJ0OKPMoW2caLfQ=
+github.com/urfave/cli/v2 v2.3.0 h1:qph92Y649prgesehzOrQjdWyxFOp/QVM+6imKHad91M=
+github.com/urfave/cli/v2 v2.3.0/go.mod h1:LJmUH05zAU44vOAcrfzZQKsZbVcdbOG8rtL3/XcUArI=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
@@ -171,5 +171,7 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.3 h1:fvjTMHxHEw/mxHbtzPi3JCcKXQRAnQTBRo6YCJSVHKI=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 rsc.io/pdf v0.1.1 h1:k1MczvYDUvJBe93bYd7wrZLLUEcLZAuF824/I4e5Xr4=
 rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
diff --git a/pkg/client/boxplot.go b/pkg/client/boxplot.go
new file mode 100644
index 0000000..50664ea
--- /dev/null
+++ b/pkg/client/boxplot.go
@@ -0,0 +1,33 @@
+package client
+
+import (
+	"gonum.org/v1/plot"
+	"gonum.org/v1/plot/plotter"
+	"gonum.org/v1/plot/vg"
+)
+
+// PlotBoxplot outputs a boxplot png
+func (c *Cassowary) PlotBoxplot(durations []float64) error {
+	p, err := plot.New()
+	if err != nil {
+		panic(err)
+	}
+	p.Title.Text = "Box Plot"
+
+	vs := make(plotter.Values, len(durations))
+	for i, d := range durations {
+		vs[i] = d
+	}
+
+	box, err := plotter.NewBoxPlot(vg.Length(20), 0.0, vs)
+	if err != nil {
+		panic(err)
+	}
+	p.Add(box)
+
+	if err := p.Save(512, 512, "boxplot.png"); err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/pkg/client/boxplot_test.go b/pkg/client/boxplot_test.go
new file mode 100644
index 0000000..0772439
--- /dev/null
+++ b/pkg/client/boxplot_test.go
@@ -0,0 +1,31 @@
+package client
+
+import (
+	"math/rand"
+	"os"
+	"testing"
+	"time"
+)
+
+func TestBoxPlot(t *testing.T) {
+	num := 100
+	res := make([]float64, num)
+	filename := "boxplot.png"
+	cass := &Cassowary{}
+	rand.Seed(time.Now().UnixNano())
+
+	for i := 0; i < num; i++ {
+		res = append(res, rand.Float64()*(200.0-10.0))
+	}
+
+	err := cass.PlotBoxplot(res)
+	if err != nil {
+		t.Errorf("Expected ok but got: %v", err)
+	}
+	_, err = os.Stat(filename)
+	if os.IsNotExist(err) {
+		t.Errorf("Expected %s in current dir but got: %v", filename, err)
+	}
+
+	_ = os.Remove(filename)
+}
diff --git a/pkg/client/histogram.go b/pkg/client/histogram.go
index e849b1b..e0d15f0 100644
--- a/pkg/client/histogram.go
+++ b/pkg/client/histogram.go
@@ -13,7 +13,7 @@ func getBins(dataPoints int) int {
 	return b
 }
 
-// PlotHistogram blabla
+// PlotHistogram outputs a histogram png
 func (c *Cassowary) PlotHistogram(durations []float64) error {
 
 	bins := getBins(len(durations))
diff --git a/pkg/client/load.go b/pkg/client/load.go
index 59a8137..4a7ace1 100644
--- a/pkg/client/load.go
+++ b/pkg/client/load.go
@@ -308,7 +308,16 @@ func (c *Cassowary) Coordinate() (ResultMetrics, error) {
 
 	// output histogram
 	if c.Histogram {
-		_ = c.PlotHistogram(totalDur)
+		err := c.PlotHistogram(totalDur)
+		if err != nil {
+		}
+	}
+
+	// output boxplot
+	if c.Boxplot {
+		err := c.PlotBoxplot(totalDur)
+		if err != nil {
+		}
 	}
 	return outPut, nil
 }
diff --git a/pkg/client/types.go b/pkg/client/types.go
index f584d6d..71389af 100644
--- a/pkg/client/types.go
+++ b/pkg/client/types.go
@@ -20,6 +20,7 @@ type Cassowary struct {
 	PromExport            bool
 	Cloudwatch            bool
 	Histogram             bool
+	Boxplot               bool
 	TLSConfig             *tls.Config
 	PromURL               string
 	RequestHeader         []string