Free tool
Eating-window style picker
A quick way to see which gentle eating pattern might fit your routine — as a starting point for a conversation with your doctor.
First: is this suitable for you?
Eating windows are not suitable for everyone. Tick anything that applies — speak to your doctor first if any do.
This tool doesn't give medical advice and doesn't predict any result.
This tool is for general interest only, not a health assessment. It does not know your medical history. Your answers stay in your browser.
Information only — not medical advice. Our guides do not diagnose, treat, cure or prevent any condition. Talk to your doctor or healthcare provider before changing your diet, exercise or medication. In an emergency, call your local emergency number (911 in the US, 999 in the UK, 112 in the EU, 000 in Australia). See our medical disclaimer.
Frequently asked questions
Is intermittent fasting safe?
Intermittent fasting is not suitable for everyone, and a planner cannot establish whether it is safe for you. Pregnancy, breastfeeding, an eating disorder history and some health conditions or medications require particular caution. Talk with your doctor before changing meal timing; the tool is not permission to ignore medical guidance.
What is intermittent fasting?
Intermittent fasting describes eating patterns that alternate eating periods with periods without food. It is about timing, not a required food list, and it is not suitable for everyone. Regular meals are also a valid approach. Discuss any proposed change with your doctor if your health or circumstances require extra caution.
Is intermittent fasting safe while breastfeeding?
An online planner cannot tell you whether fasting is appropriate while breastfeeding. Your nutritional needs and circumstances deserve individualized discussion with your healthcare provider. Do not interpret a suggested schedule as medical clearance or change an established care plan because of it. Regular meals remain an option without using an eating window.
Is intermittent fasting safe during pregnancy?
Do not use an eating-window tool as guidance for fasting during pregnancy. Pregnancy changes nutritional needs, and meal timing should be discussed with your maternity care team. This website cannot assess your circumstances. Keep following your existing care advice rather than adopting a fasting schedule from a general calculator or article.
What is intermittent fasting 16/8?
The label 16/8 describes a daily schedule with a sixteen-hour period without food and an eight-hour eating window. It is a description, not a recommendation or a promise. Whether any change in meal timing is appropriate depends on your circumstances; ask your doctor before trying it if there are health concerns.