How many red pepper flakes equals jalapeno pepper?

Red pepper flakes and jalapeños are both spicy, but they are not equivalent in terms of heat level. Red pepper flakes are typically made from dried, crushed chili peppers, while jalapeños are a type of fresh chili pepper. Jalapeños are generally considered to be milder in spiciness than red pepper flakes. This means that you would need to use more red pepper flakes to achieve the same level of heat as a single jalapeño.