diff --git a/tsweb/tsweb.go b/tsweb/tsweb.go
index 278b9d111..c834f280b 100644
--- a/tsweb/tsweb.go
+++ b/tsweb/tsweb.go
@@ -466,6 +466,12 @@ func writePromExpVar(w io.Writer, prefix string, kv expvar.KeyValue) {
 		}
 		fmt.Fprintf(w, "# TYPE %s %s\n%s %v\n", name, typ, name, v.Value())
 		return
+	case *expvar.Float:
+		if typ == "" {
+			typ = "gauge"
+		}
+		fmt.Fprintf(w, "# TYPE %s %s\n%s %v\n", name, typ, name, v.Value())
+		return
 	case *metrics.Set:
 		v.Do(func(kv expvar.KeyValue) {
 			writePromExpVar(w, name+"_", kv)
diff --git a/tsweb/tsweb_test.go b/tsweb/tsweb_test.go
index 8aef7073c..2de762a96 100644
--- a/tsweb/tsweb_test.go
+++ b/tsweb/tsweb_test.go
@@ -334,6 +334,9 @@ func TestVarzHandler(t *testing.T) {
 		t.Logf("Got: %s", rec.Body.Bytes())
 	})
 
+	half := new(expvar.Float)
+	half.Set(0.5)
+
 	tests := []struct {
 		name string
 		k    string // key name
@@ -358,6 +361,31 @@ func TestVarzHandler(t *testing.T) {
 			new(expvar.Int),
 			"# TYPE foo gauge\nfoo 0\n",
 		},
+		{
+			// For a float = 0.0, Prometheus client_golang outputs "0"
+			"float_zero",
+			"foo",
+			new(expvar.Float),
+			"# TYPE foo gauge\nfoo 0\n",
+		},
+		{
+			"float_point_5",
+			"foo",
+			half,
+			"# TYPE foo gauge\nfoo 0.5\n",
+		},
+		{
+			"float_with_type_counter",
+			"counter_foo",
+			half,
+			"# TYPE foo counter\nfoo 0.5\n",
+		},
+		{
+			"float_with_type_gauge",
+			"gauge_foo",
+			half,
+			"# TYPE foo gauge\nfoo 0.5\n",
+		},
 		{
 			"metrics_set",
 			"s",