The syrup sugar per 100g calculator converts the numbers on a syrup nutrition label into a standard measure: grams of sugar per 100 grams of syrup. Whether you are using pure maple syrup, honey, agave, corn syrup, or a store-bought pancake syrup, this tool helps you compare products fairly and understand how quickly sugars add up in a portion.
Simply enter the grams of sugars from the label, the serving size in grams, and optionally the amount of syrup you plan to use. The calculator returns grams of sugar per 100g, classifies the result as low, medium, or high, and estimates how much sugar your portion contains.
This tool is useful for carb counting, low-sugar meal planning, diabetes management, and anyone who wants to read nutrition labels more critically.
🥞 1. Label values
📊 Results
Values are calculated from your inputs. Reference values are typical approximations and vary by brand.
How to Use This Tool
Start with the nutrition facts panel on your syrup bottle. You need two numbers from the label: grams of sugars and the serving size in grams. In the United States, the label lists Total Sugars and Added Sugars separately; use Total Sugars for this calculation. In Europe and many other countries, sugars appear as a sub-line under Carbohydrates, often as “of which sugars.” If your serving size is shown in tablespoons or millilitres, weigh one serving on a kitchen scale or look for the gram equivalent in the label’s nutrition table.
Enter the two values, then click Calculate sugar. The optional “Your portion” field lets you see how many grams of sugar end up in an actual bowl of oatmeal, pancake stack, or smoothie. The syrup type dropdown is purely a reference: it compares your result with a typical value for that category, which is useful when you are deciding between brands. Use the quick-fill buttons to test the calculator with common label examples before entering your own numbers.
Tip: For the most accurate result, use the gram weight printed on the label. A tablespoon of maple syrup weighs about 20 g, while a tablespoon of a thinner pancake syrup may weigh less, so don’t assume all tablespoons are the same.
The Math Behind It
The calculator uses a simple ratio. If a serving contains S grams of sugar and weighs W grams, then sugar per 100 g is:
Sugar per 100 g = (S ÷ W) × 100
For example, a label that says 12 g sugars in a 20 g serving works out to (12 ÷ 20) × 100 = 60 g per 100 g. The calculator also estimates sugar in your portion with the same proportion: portion sugar = (S ÷ W) × portion weight. The high/medium/low classification follows the common front-of-pack threshold used in the UK: more than 22.5 g per 100 g is high, between 5 and 22.5 g is medium, and less than 5 g is low. Nearly all traditional syrups fall in the high category, which is why portion size matters so much.
Worked Examples
Example 1: Pure maple syrup label says 12 g sugars per 20 g serving. The per-100g value is (12 ÷ 20) × 100 = 60 g. If you pour 30 g over pancakes, you get (12 ÷ 20) × 30 = 18 g of sugar.
Example 2: A sugar-free pancake syrup lists 0 g sugars in a 30 g serving. The result is 0 g per 100 g, regardless of portion, because the syrup is sweetened with artificial or plant-based sweeteners that are not counted as sugar.
Example 3: Honey label says 17 g sugars per 21 g serving. Per 100 g: (17 ÷ 21) × 100 ≈ 80.95 g. In a 14 g drizzle, that is about 11.33 g of sugar.
Reference Table: Typical Sugar in Common Syrups
The values below are approximate typical ranges from major food databases and manufacturer-supplied nutrition data. They vary by brand, blend, and production season. Always use the label values for the exact product you are eating.
| Syrup | Typical sugars per 100 g |
|---|---|
| Pure maple syrup | 60–67 g |
| Pancake / table syrup | 50–60 g |
| Corn syrup | 70–76 g |
| Agave nectar | 68–76 g |
| Honey | 75–82 g |
| Molasses | 56–66 g |
| Golden syrup | 78–82 g |
For more authoritative data, browse the USDA FoodData Central database at fdc.nal.usda.gov.
Factors That Affect the Number
Label rounding can change the result. Many countries allow sugars to be rounded to the nearest whole gram, so a product labelled 10 g might actually contain 10.4 g or 9.6 g. Small serving sizes amplify this rounding effect. If you enter 10 g sugars in a 20 g serving, the calculator returns 50 g per 100 g, but the true value could be closer to 48–52 g.
Moisture and density also matter. Syrups are water-sugar solutions, and the same sweetness can be achieved with different water contents. A thinner product will have fewer grams of sugar per 100 g but may still deliver the same sweetness per tablespoon. That is why per-100g comparisons are more consistent than per-tablespoon comparisons when you are comparing products of different densities.
Note: The sugar in syrups is largely added or free sugar. The WHO recommends keeping free sugars below 10% of daily energy, and ideally below 5%. A single drizzle of a sugary syrup can quickly use up that allowance, so pair this calculator with an overall check of your daily intake. See the WHO sugar guideline.
Frequently Asked Questions
Why calculate sugar per 100 g instead of per serving? Serving sizes vary wildly between brands — 15 g, 20 g, 30 g, even 40 g per “serving.” Per-100g values put every syrup on the same scale, so you can compare products at a glance. It also makes it easier to estimate sugar in any custom portion with simple math.
Is honey healthier than maple syrup? Honey contains tiny amounts of pollen, enzymes, and antioxidants, but nutritionally it is still about 75–82 g sugar per 100 g. Maple syrup contains some minerals like potassium and calcium; the maple potassium calculator shows how those minerals compare. The bottom line is that neither is a low-sugar food; both should be used in small amounts.
How do I convert a tablespoon label to grams? Use the weight listed in the nutrition facts panel, not a volume estimate. As a rough guide, one US tablespoon of honey or maple syrup weighs about 20–21 g, while thinner syrups may be closer to 15–18 g. Weighing your actual portion on a kitchen scale is the most reliable method.
What about “sugar-free” syrups? In the US, a product labelled sugar-free must contain less than 0.5 g of sugar per serving, so the calculator will show 0 g per 100 g (or close to it). The sweeteners used may still affect blood sugar differently, so check the sweetener list if that matters for your diet.
If you track sugars in other foods, the granola sugar calculator and banana sugar calculator can help you keep your daily total in view.