Fidyah calculator
Work out fidyah from the number of fasts you cannot make up and the rate your local mosque or charity gives, with the working shown.
This works out an amount, not whether you owe it
Whether a missed fast is made up later or replaced by fidyah depends on why it was missed, and scholars differ on several of those cases. Ask someone qualified. This page does the multiplication once you know the answer.
What fidyah is
A payment made in place of a fast that cannot be made up, most often for someone permanently unable to fast. It is reckoned as feeding one person in need for each fast missed, so the sum is simply the number of fasts multiplied by whatever feeding one person costs where you are.
Why no amount is built in
Because there is not one to build in. The obligation is expressed as a quantity of staple food, not as money, and the quantity itself is given differently: one mudd and half a sa’ are both cited, and they differ by roughly double. The cash equivalent is then a matter of local food prices, which is why mosques and charities publish their own figure for their own country and revise it each year.
A number hardcoded into this page would have been wrong for most of the world on the day it was written, and wrong everywhere within a year. So the tool asks for yours.
Finding your rate
Your local mosque or a national relief charity will publish one each Ramadan. Use the figure for the country you are in rather than converting one from elsewhere. It is based on local food costs, so converting it defeats the point.
What the tool contributes
The multiplication, and a clear record of it: the number of fasts, the rate you entered, and the total those produce. Nothing is assumed, and nothing is rounded away . The working is there so you can check it against what your mosque tells you.