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Black Tea (Unsweetened) Calories
Zero calories, antioxidant source, unsweetened
In season: Spring · Summer · Autumn · Winter
CALORIES
GI
POTASSIUM
FIBER
Quick answer
1 cup (medium) of Black Tea (Unsweetened) (240 g) has 2 calories. That works out to 1 calories per 100 g. It contains 0.5 g of carbs, 0.2 g of protein, 0 g of fat and 0 g of fiber. Its 1 mg of Manganese covers 42% of the Daily Value. Its glycemic index is 0 (low), so it raises blood sugar slowly.
What is Black Tea (Unsweetened)?
Black tea (unsweetened) is made by steeping leaves from the tea plant after they have been fully oxidised, a process that gives the brew its deep colour and robust flavour. It is commonly served hot, either plain or with milk depending on local custom; in Britain, it is often taken with milk, while many other tea-drinking traditions favour it without additions.
Its brisk, slightly tannic taste pairs well with toast, biscuits or a savoury breakfast. Without sugar or milk, it contributes almost no calories and offers a simple way to enjoy tea’s natural flavour. Brew it for less time or add a little hot water if you prefer a milder cup.
Black Tea (Unsweetened) Nutrition Facts
Selected: 100 g
1
KCAL / 100G
Carbs
0.2g
· 0% DV
Protein
0.1g
· 0% DV
Fat
0g
· 0% DV
Fiber
0g
· 0% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 67% · Protein 33% · Fat 0%
Black Tea (Unsweetened) Vitamins & Minerals
Vitamins
B2
0.02mg · 2% DV
B1
0.01mg · 1% DV
B3
0.1mg · 1% DV
B6
0.01mg · 1% DV
Minerals
Potassium ⭐
18mg · 1% DV
Calcium
3mg · 0% DV
Iron
0mg · 0% DV
Magnesium
2mg · 0% DV
How Nutritious Is Black Tea (Unsweetened)?
Nutrient density
Low
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Satiety score
Medium
An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.
Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.
Black Tea (Unsweetened) Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
How to Burn Off Black Tea (Unsweetened)
To burn the 1 calories in 100 g:
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
Is Black Tea (Unsweetened) Processed?
NOVA 2
Minimally Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
Does Black Tea (Unsweetened) Contain Allergens?
No known major allergens
Which Diets Is Black Tea (Unsweetened) Good For?
Vegan
✓ Suitable
Vegetarian
✓ Suitable
Gluten-Free
✓ Suitable
Dairy-Free
— Not suitable
Mediterranean
✓ Suitable
Paleo
✓ Suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
✓ Suitable
Low FODMAP
— Not suitable
Black Tea (Unsweetened) Fat Profile
SATURATED
0g
MONOUNSATURATED
0g
POLYUNSATURATED
0g
Compare Black Tea (Unsweetened)
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Frequently Asked Questions About Black Tea (Unsweetened)
Does unsweetened black tea have caffeine?
Yes, unsweetened black tea contains caffeine. The amount varies with the tea leaves and how long they steep, so a stronger or longer-steeped cup generally has more caffeine.
How do you brew unsweetened black tea without making it bitter?
Steep unsweetened black tea in freshly boiled water, then remove the leaves or tea bag once it tastes strong enough. Leaving the tea to steep too long extracts more bitter-tasting compounds.
Does unsweetened black tea stain your teeth?
Yes, unsweetened black tea can stain teeth because its dark pigments and tannins can cling to tooth surfaces. Rinsing your mouth with water after drinking can help reduce residue.
Does unsweetened black tea dehydrate you?
No, unsweetened black tea still contributes fluid, and ordinary servings do not usually cause dehydration. Its caffeine may increase urination somewhat, especially if you are not used to caffeine.
Is unsweetened black tea good for you?
Unsweetened black tea can be a useful alternative to sweetened drinks and contains naturally occurring polyphenols. Its benefits do not make it a treatment, and adding sugar changes its nutritional profile.
Can unsweetened black tea interfere with iron absorption?
Yes, compounds in black tea can reduce absorption of non-heme iron, the type found in plant foods. If you rely on iron-rich meals, drink your tea between meals rather than alongside them.
Can unsweetened black tea make you nauseous on an empty stomach?
Yes, strong unsweetened black tea can cause nausea or stomach discomfort for some people when they drink it without food. Try a weaker brew or have it with a meal if that happens.
Does adding milk to unsweetened black tea change its taste?
Yes, milk softens the brisk, tannic taste of unsweetened black tea and makes it creamier. Add a small amount first, since milk changes the drink even though it does not add sugar.
How long does brewed unsweetened black tea last in the fridge?
Brewed unsweetened black tea is best kept covered in the refrigerator and used within a few days for good quality. Discard it if it develops an unusual smell, appearance, or taste.
Can you drink unsweetened black tea before bed?
You can, but its caffeine may delay sleep or make sleep less restful, particularly if you are caffeine-sensitive. Choose a caffeine-free drink at night if black tea tends to affect your sleep.
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Nutrition data compiled from USDA FoodData Central and scientific sources.