Many of the biggest sources of sugar in a modern diet arrive in a glass. Sodas, sweetened teas, energy drinks, juice drinks, and flavored coffee beverages can pack a surprising amount of sugar into a single serving — and nutrition labels often express that sugar per 100 ml, not per bottle. This drink sugar calculator instantly works out exactly how many grams of sugar you are drinking, then converts the amount into teaspoons and calories from sugar.
Choose a drink from the built-in list of typical sugar values, set your serving size in milliliters or fluid ounces, and enter how many drinks you had. The tool totals the sugar and compares it with the World Health Organization’s 25 g guideline for free sugars and the FDA’s 50 g Daily Value for added sugars.
It is a practical companion for anyone tracking macronutrients, managing diabetes or prediabetes, cutting back on sugary beverages, or just curious about what is really inside that can, bottle, or fountain cup.
🥤 Drink type
🧊 Volume per drink
🔁 Number of drinks
Use halves or decimals if a drink was shared.
Values are typical averages from standard nutrition databases; actual sugar content varies by brand and recipe.
Step-by-Step Guide
Start by selecting the drink that matches what you had from the dropdown menu. The number shown next to each option is the average sugar content in grams per 100 milliliters. If your drink isn’t listed, choose Custom drink and type in the grams per 100 ml from the nutrition label or a reliable food database. Next, set the volume per drink. You can type a value, choose milliliters or fluid ounces, or tap one of the quick preset buttons for common can, bottle, glass, and fountain sizes. Then enter how many drinks you consumed — decimals are allowed if you shared a drink or had part of one. Press Calculate sugar and the tool displays total grams of sugar, teaspoons, calories from sugar, and the share of the WHO 25 g and FDA 50 g daily references that your drink uses up. Press Reset to clear everything and start a new calculation.
Formula Explained
All drink sugar calculations begin with a single density number: grams of sugar per 100 ml. To get the sugar in one drink, multiply that density by the total volume in ml, then divide by 100. If you entered a volume in fluid ounces, the tool first converts it using 1 fl oz = 29.5735 ml.
total sugar = grams per drink × number of drinks
From the total, the tool derives the other values. One level teaspoon of sugar weighs about 4 grams, so teaspoons = total grams ÷ 4. Since sugar provides 4 calories per gram, calories from sugar = total grams × 4. The percentages compare your total to the WHO 25 g daily free-sugar guideline and the FDA 50 g Daily Value for added sugars, giving you a quick sense of how much of your daily allowance one beverage uses up.
Worked Examples
Example 1 — Regular cola, 355 ml can. At 10.6 g per 100 ml, the can contains (10.6 × 355) ÷ 100 = 37.6 g of sugar. That equals 9.4 teaspoons and about 150 calories. It uses 150% of the WHO 25 g guideline and 75% of the FDA 50 g Daily Value — before you drink anything else.
Example 2 — Orange juice, two 250 ml glasses. Orange juice averages 8.5 g per 100 ml. Each 250 ml glass has (8.5 × 250) ÷ 100 = 21.3 g. Two glasses give 42.5 g total, or 10.6 teaspoons and 170 calories. That exceeds the WHO 25 g guideline and reaches 85% of the FDA Daily Value, even though it comes from fruit juice.
Tips & Best Practices
Always check the serving size on a bottle or carton. Many bottles contain two or more servings, but people often drink the whole bottle in one sitting — the label’s per-serving sugar number can mislead you. For fresh juices and homemade drinks, use a food database or estimate from the recipe. Remember that “no added sugar” does not mean sugar-free; fruit juices, milk, and honey all contain natural sugars that still count toward daily totals. If you are tracking sugar for diabetes or weight management, these numbers are a helpful starting point, but individual metabolism and medical advice matter more than any single calculation.
Reference Sugar Values
The table lists common drinks and typical sugar densities. Values are averages from nutrition databases and can vary by brand and recipe.
| Drink | Grams per 100 ml | Typical serving | Grams per serving |
|---|---|---|---|
| Regular cola | 10.6 | 355 ml | 37.6 |
| Orange juice | 8.5 | 250 ml | 21.3 |
| Apple juice | 9.8 | 250 ml | 24.5 |
| Grape juice | 15.5 | 250 ml | 38.8 |
| Energy drink | 11.0 | 250 ml | 27.5 |
| Sweetened iced tea | 7.5 | 355 ml | 26.6 |
| Chocolate milk | 10.0 | 300 ml | 30.0 |
Frequently Asked Questions
Why does the label show grams per 100 ml instead of per bottle? The 100 ml basis makes it easy to compare different drinks regardless of package size. You multiply by your own serving volume to get the true amount you consume.
Is natural sugar from fruit juice the same as added sugar? For the WHO free-sugar guideline, sugar in fruit juice counts toward the 25 g limit because it is free (not bound in the fruit matrix). The FDA Daily Value applies to added sugars, so 100% juice may not be counted toward added sugars on labels, but your body still processes the sugar.
How many teaspoons are in a gram of sugar? About 0.25 teaspoons. This tool uses the common 4 g per teaspoon conversion, which is close enough for everyday tracking.
Are diet drinks included? Diet sodas and zero-sugar drinks typically contain almost no sugar, so they would show 0 g per 100 ml. They may contain artificial sweeteners, which have their own health considerations but do not raise blood sugar the same way.
For official guidance, see the WHO healthy diet fact sheet and the FDA added sugars page.