diff --git a/cast_test.go b/cast_test.go
index dc8ba14..016f8c2 100644
--- a/cast_test.go
+++ b/cast_test.go
@@ -796,6 +796,18 @@ func TestToBoolE(t *testing.T) {
 		iserr  bool
 	}{
 		{0, false, false},
+		{int64(0), false, false},
+		{int32(0), false, false},
+		{int16(0), false, false},
+		{int8(0), false, false},
+		{uint(0), false, false},
+		{uint64(0), false, false},
+		{uint32(0), false, false},
+		{uint16(0), false, false},
+		{uint8(0), false, false},
+		{float64(0), false, false},
+		{float32(0), false, false},
+		{time.Duration(0), false, false},
 		{jf, false, false},
 		{nil, false, false},
 		{"false", false, false},
@@ -811,10 +823,26 @@ func TestToBoolE(t *testing.T) {
 		{"t", true, false},
 		{"T", true, false},
 		{1, true, false},
+		{int64(1), true, false},
+		{int32(1), true, false},
+		{int16(1), true, false},
+		{int8(1), true, false},
+		{uint(1), true, false},
+		{uint64(1), true, false},
+		{uint32(1), true, false},
+		{uint16(1), true, false},
+		{uint8(1), true, false},
+		{float64(1), true, false},
+		{float32(1), true, false},
+		{time.Duration(1), true, false},
 		{jt, true, false},
 		{je, true, false},
 		{true, true, false},
 		{-1, true, false},
+		{int64(-1), true, false},
+		{int32(-1), true, false},
+		{int16(-1), true, false},
+		{int8(-1), true, false},
 
 		// errors
 		{"test", false, true},
diff --git a/caste.go b/caste.go
index 514d759..bccf27a 100644
--- a/caste.go
+++ b/caste.go
@@ -98,10 +98,31 @@ func ToBoolE(i interface{}) (bool, error) {
 	case nil:
 		return false, nil
 	case int:
-		if i.(int) != 0 {
-			return true, nil
-		}
-		return false, nil
+		return b != 0, nil
+	case int64:
+		return b != 0, nil
+	case int32:
+		return b != 0, nil
+	case int16:
+		return b != 0, nil
+	case int8:
+		return b != 0, nil
+	case uint:
+		return b != 0, nil
+	case uint64:
+		return b != 0, nil
+	case uint32:
+		return b != 0, nil
+	case uint16:
+		return b != 0, nil
+	case uint8:
+		return b != 0, nil
+	case float64:
+		return b != 0, nil
+	case float32:
+		return b != 0, nil
+	case time.Duration:
+		return b != 0, nil
 	case string:
 		return strconv.ParseBool(i.(string))
 	case json.Number: