Plain brewed black tea in the USDA reference provides 0.3g net carbs and 1 calorie per 100 g. Milk, sugar, syrup and other additions need to be counted separately.
Is Black Tea Keto?

YOUR PORTION
How much are you having?
Scale the published reference values to your portion.
Per 100 g (plain black tea brewed with tap water). USDA FoodData Central.
How this is calculated
total carbohydrate - fiber. Each published value is multiplied by your portion divided by the reference amount. No extra fiber, sugar alcohol or allulose deductions are applied here.
Grams and milliliters are not interchangeable. Household measures require a food-specific conversion; check your scale or product label.
0.3gnet carbs in your portion
- Total carbs
- 0.3g
- Fiber
- 0g
- Protein
- 0g
- Fat
- 0g
- Calories
- 1
Plain brewed tea is distinct from dry leaves, instant mixes and bottled formulations.
Use a measured drink weight; additions are separate ingredients.
The historical reference provides nutrition guidance, not a measurement of your own brew.
- Net carbs (100 g)0.3g
- Protein (100 g)0g
- Fat (100 g)0g
- Keto verdictKeto-friendly
NUTRITION FACTS
Per 100 g (plain black tea brewed with tap water)
Source: USDA FoodData Central reference record
Source fit: generic reference; variety, brand, or preparation may differ
Net-carb calculation: total carbohydrate - fiber
The five calculator inputs were transcribed from the public USDA page on September 6, 2026 with 100 g selected. This historical SR Legacy record describes plain black tea brewed with tap water, not the former ready-to-drink reference or a particular branded blend. USDA lists a cup (8 fl oz) as 237 g for this reference; enter 237 grams to calculate it. This is a source-specific portion, not a universal liquid density. The evidence file is a partial page transcription, not a complete API response.
Nutrition record reviewed 2026-09-06. Maintained by KetoLens Team.
WHY IT'S KETO-FRIENDLY
- The reference has a small carbohydrate contribution when consumed plain.
- Use the brewed drink’s weight, not the weight of the dry tea leaves.
- A milk tea, chai latte or sweetened bottled tea needs its own nutrition information.
PREPARATION SUGGESTIONS
BREW YOUR TEA
Follow the tea package’s water temperature, amount and steeping directions; strain or remove the leaves before weighing the finished drink.
ADD MILK DELIBERATELY
Measure any milk or cream and calculate it using its own label. The plain-tea reference excludes these additions.
SERVE OVER ICE
Calculate the brewed tea before adding ice, or account for the dilution when calculating the finished drink.