Use in Moderation
Coconut Water
6.30g net carbs per 1 cup
Sweet and lightly nutty, one cup runs 6.3 g net carbs, which eats up a real chunk of a strict daily budget. Treat it as an occasional sip after a workout rather than a daily drink, and measure your pour instead of guessing.
Built by Barron Hansen · Last updated July 2026
Nutrition Facts
Fits My Daily Budget?
Set your daily net carb limit to see how one serving fits.
One serving uses 32% of your 20g daily budget.
Plan the rest of your day
Good to Know
Most cartons from brands like Vita Coco, Zico, and Harmless Harvest are pure coconut water, but flavored versions (pineapple, mango) often add fruit juice or cane sugar that pushes the carbs higher. Reading the label matters here, since "100% coconut water" with no added ingredients keeps you at that 6.3 g per cup. If you do reach for it, a half cup splits the carb hit to roughly 3 g and stretches one carton further across the week.
Is Coconut Water Keto? The Full Answer
Coconut Water contains 6.30g net carbs per 1 cup (8.90g total carbs minus 2.60g fiber). Sweet and lightly nutty, one cup runs 6.3 g net carbs, which eats up a real chunk of a strict daily budget. Treat it as an occasional sip after a workout rather than a daily drink, and measure your pour instead of guessing.
On a standard ketogenic diet, most people target 20-25g net carbs per day. A single serving uses 32% of a 20g daily carb limit. Track your portions carefully and account for other carbs in your meals.
Better Keto Swaps
Here are a few lower-carb ways to stay hydrated. Plain water with a squeeze of lime and a pinch of pink salt comes in at roughly 0.5 g net carbs and covers electrolytes without the sugar that a cup of this drink brings (6.3 g net carbs). LMNT electrolyte packets are another solid pick at about 1 g net carbs per stick, with sodium, potassium, and magnesium built in. If you want something with body, try unsweetened coconut milk beverage (the carton kind, not canned) at around 1 g net carbs per cup. It keeps that coconut flavor while cutting most of the sugar.
Track Your Ketone Levels
The Keto-Mojo meter is the gold standard for confirming you're actually in ketosis. Know your numbers - don't guess.