Net carbs are the only number that matters here
Fibre passes through undigested, so it does not count against your daily limit. Subtract it from total carbohydrate and you get net carbs — the figure beside every fruit below.
This is why berries work and bananas do not. A half cup of raspberries carries almost as much fibre as sugar. A banana carries almost none, and spends a beginner's entire day in one sitting.
THE SHORT ANSWER
Berries, avocado, olives, citrus zest. Everything else is a portion problem.
Serving sizes differ by fruit. Each row states its own.
Best Choices
UNDER 4G NET CARBS PER SERVINGEveryday fruit. Fits a 20g day without arithmetic.
RULE OF THUMB
If it grows on a bramble, it is probably fine.
Limit
OVER 9G NET CARBS PER SERVING
Not poison — just expensive. One of these can cost a full day's carbs, so treat them as an occasion rather than a habit.
Quick tips
01 / PORTION BY HAND
Measure berries once, then trust your palm
A half cup is roughly a cupped palm. Do it with a measuring cup twice and you will never need the cup again — which is the point of a plan over a tracker.
02 / DRIED FRUIT
Dried fruit is candy without the label
Drying removes water, not sugar. A small handful of raisins carries more carbs than a whole bowl of strawberries.
03 / NO JUICE
Eat the fruit, skip the glass
Juicing strips the fibre and leaves the sugar. Whole fruit, always — juice and smoothies belong on the limit list.
04 / PAIR WITH FAT
Berries with cream beat berries alone
Fat slows the sugar and turns a small portion into an actual dessert. Half a cup of raspberries under whipped double cream is the standard keto sweet, and it costs about 4g.
Common questions
Is fruit allowed on keto at all?+
Yes, within the numbers above. Berries, avocado, and olives fit a 20g day comfortably. The rule is not "no fruit" — it is "no fruit you have not budgeted for."
Are frozen berries as good as fresh?+
Same net carbs, lower price, longer shelf life. Buy plain frozen berries with no syrup or added sugar in the ingredients and you have the cheapest safe fruit in the shop.
What about juice and smoothies?+
Treat both as limit-list items. A glass of orange juice is four oranges with the fibre removed — around 25g of net carbs, and it will not keep you full for an hour.
What if my carb limit is not 20g?+
The tiers move with you. At 50g of net carbs a day, most of the moderate list becomes everyday food and a small apple is workable. Run your own numbers through the macro calculator and the portions above stop being guesswork.
CONTINUE IN THE LIBRARY