How to use it and understand the result
First check a trusted authority’s zakat al-fitr announcement for your country and year. Enter the amount yourself; this tool does not publish an official annual rate or convert between currencies.
The arithmetic is people × amount per person = planned total. The amount already set aside or paid is subtracted. For example, four people at 100 units produces 400 units; the example of 100 is not a religiously prescribed or official rate.
Adding someone does not determine religious liability on their behalf. Responsibility, eligible recipients, timing and intention are separate questions. The tool neither makes payments nor collects donations or certifies validity.
Fidyah and wealth zakat have different conditions and should not be mixed into this budget. Values stay on the open page and are not written into the URL or sent to a server.