https://www.uscis.gov/feecalculator
Find your form on the dropdown list and click Submit.
If your form has a flat fee, it will appear on the next screen.
If your filing fee varies (for example, based on a category or age group), answer the questions that relate to the form you chose. Click the Calculate button then the fee will appear below based on your answers.
If you are filing concurrently, you may calculate the filing fee for your additional form. If you need to remove that concurrent form, click on the red X.
If you need to calculate fees for multiple people, you must use the Fee Calculator separately for each person.