Daniel Fast Calculator
Pick a start date and a length — the classic 21-day Daniel Fast, a 3-day or 10-day fast, a 40-day fast, or your own custom length — and see your exact end date.
Your fast ends
What is a Daniel Fast?
The Daniel Fast takes its name from two passages in the book of Daniel. In Daniel 1:12, Daniel and his companions asked to eat only vegetables and water for ten days rather than the king's rich food and wine. Later, in Daniel 10:2-3, Daniel describes three weeks of eating "no pleasant food," no meat or wine — which is where the 21-day length comes from. Modern Daniel Fast plans generally combine these into a partial fast of whole, plant-based foods — typically excluding meat, dairy, sweeteners, bread/leavened products, and processed food — for a set number of days, rather than abstaining from food entirely.
Because it's a dietary pattern rather than a single defined rule, specifics vary between churches and fasting guides — some allow whole grains and healthy oils, others are stricter. This calculator only handles the dates; check with your church or a fasting guide for the specific food list you're following.
Frequently asked questions
How long is a traditional Daniel Fast?
21 days is the most common length, drawn from Daniel 10:2-3. Some people follow the shorter 10-day pattern from Daniel 1:12 instead, and churches sometimes run 40-day fasts (echoing Jesus' 40 days in the wilderness, Matthew 4:2) around a season like the New Year or before Easter.
What foods does a Daniel Fast typically exclude?
Most modern Daniel Fast guides exclude meat, dairy, eggs, sweeteners/sugar, bread and other leavened or processed grain products, and alcohol — focusing on vegetables, fruits, whole grains, legumes, nuts, and water. Exact lists vary by church or guide, so check the specific plan you're following.
Is fasting safe for everyone?
No — pregnant or nursing women, people with diabetes or eating disorders, and anyone on medication that requires food should talk to a doctor before fasting, even a food-restriction fast like the Daniel Fast rather than a full food fast.
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