Can you have black coffee while intermittent fasting?

Last reviewed · Jun 29, 2026 · Not medical advice
Quick answer

Black coffee usually does not break an intermittent fast because it has very few calories.

Step by step

01 Look up the calories and ingredients for black coffee.
02 Choose a rule before the fast starts so you are not deciding while hungry.
03 Use the same rule for at least a few fasts before judging whether it works.

The longer answer

Black coffee usually does not break an intermittent fast because it has very few calories. In everyday intermittent fasting, the easiest rule is to keep the fasting window to water, plain tea, and black coffee unless you intentionally follow a modified fast. Track the choice so you can see whether it affects cravings or consistency.

Tip

If black coffee makes you hungrier, switch back to water, plain tea, or black coffee for a cleaner test.

Common mistake

Changing the rule for black coffee every day and then not knowing what actually helped.

Track in the app

Track the fasting window, black coffee, hunger, energy, and whether you finished the fast.

Safety note
Educational only. People who are pregnant, breastfeeding, under 18, have diabetes, take glucose-affecting medication, have a history of eating disorders, or feel unwell should speak with a qualified clinician before fasting.

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