# How do I convert a double to 2 decimal places? Code Answer

Hello Developer, Hope you guys are doing great. Today at Tutorial Guruji Official website, we are sharing the answer of How do I convert a double to 2 decimal places? without wasting too much if your time.

The question is published on by Tutorial Guruji team.

Here is the code: How do I make it come out as only 2 decimal places? My app crashes when I use `String.format("%.2f", maltRequiredString);`

```public class MainActivity extends AppCompatActivity {

EditText batchVolEditText;
EditText ogEditText;
EditText bheEditText;
TextView maltRequiredTextView;

public void calculate(View view) {

String batchVolString = batchVolEditText.getText().toString();
String ogString = ogEditText.getText().toString();
String bheString = bheEditText.getText().toString();

double batchVolDouble = Double.parseDouble(batchVolString);
double ogDouble = Double.parseDouble(ogString);
double bheDouble = Double.parseDouble(bheString);
double specificGravity = 0.96;

double maltRequired = (batchVolDouble * ogDouble * specificGravity) / bheDouble;

String maltRequiredString = Double.toString(maltRequired);

maltRequiredTextView.setText(maltRequiredString + "kg");

}
```

Remember you can’t use

``` String.format("%.2f", maltRequiredString);
```

Because maltRequiredString is string. Correct coding is that you must use float in this function and for that you have to convert your string to float

```float f = Float.valueOf(maltRequiredString);
String test = String.format("%.02f", f);
```

You can also use this technique for making it 2 decimal

```DecimalFormat decimalFormat = new DecimalFormat("#.##");
float twoDigitsF = Float.valueOf(decimalFormat.format(f));
```