Wine contains small amounts of iron, but the exact amount depends heavily on the grape variety, winemaking methods, and even the soil where the grapes were grown. This Wine Iron Calculator converts what you pour into a clear milligram estimate, so you can track your iron intake without guessing.
Use it for any serving size — a 150 ml glass, a full 750 ml bottle, or even a quick splash while cooking. Choose a wine type (red, white, rosé, or sparkling) or enter your own concentration. The result gives you total iron, iron per standard glass, and the percentage of the daily value (18 mg).
Whether you're managing anemia, planning meals, or just curious about the micronutrients in your drink, this tool turns a mysterious nutrient figure into something you can actually use.
🍷 Wine Iron Calculator
Estimate how much iron is in your glass or bottle of wine based on typical concentrations.
How the Iron Estimate Is Calculated
Wine iron levels are reported as concentrations in milligrams per liter (mg/L). The calculation is straightforward: convert your serving into milliliters, multiply by the concentration, and divide by 1000 to get milligrams.
For example, a typical 150 ml glass of red wine at 4.6 mg/L works out to 4.6 × 150 ÷ 1000 = 0.69 mg of iron. The same glass of white wine at 2.7 mg/L gives roughly 0.41 mg. Once you have the total, the calculator also expresses it as a percentage of the FDA Daily Value of 18 mg for iron.
The Daily Value comparison is useful because it places a small mineral content in context. A single glass rarely exceeds 5% of the DV, yet someone drinking a full bottle of red wine could reach roughly 11–15% of the daily target — worth knowing if you are tracking intake closely.
How to Use This Tool
Start by choosing a wine type. The presets use typical published concentrations: red at 4.6 mg/L, white at 2.7 mg/L, and rosé or sparkling at 2.2 mg/L. If you have a measured value from a label or a lab report, select Custom concentration and type it in. Then enter how much wine you poured, in milliliters, fluid ounces, cups, or whole 750 ml bottles.
The quick-fill buttons let you jump straight to common serving sizes — a 150 ml restaurant pour, a 5 fl oz standard glass, a full bottle, or a half bottle. Press Calculate iron and the result panel shows your total iron, the amount per 150 ml glass, the percentage of Daily Value, and a step-by-step breakdown so you can verify the math.
Worked Examples
Example 1 — Standard glass of red wine. 150 ml at 4.6 mg/L → Iron = 4.6 × 150 ÷ 1000 = 0.69 mg. That is 0.69 ÷ 18 × 100 ≈ 3.8% of the Daily Value.
Example 2 — Full bottle of white wine. 750 ml at 2.7 mg/L → Iron = 2.7 × 750 ÷ 1000 = 2.03 mg. That is about 11.3% of the Daily Value.
Example 3 — Half bottle of rosé. 375 ml at 2.2 mg/L → Iron = 2.2 × 375 ÷ 1000 = 0.83 mg. That is about 4.6% of the Daily Value.
Example 4 — Cooking splash. 60 ml of red wine at 4.6 mg/L in a sauce adds only 4.6 × 60 ÷ 1000 = 0.28 mg of iron.
These examples show how small wine's contribution is in most meals. It is a minor source compared with fortified cereals, lentils, spinach, or red meat.
Typical Iron Concentrations in Wine
| Wine type | Typical value (mg/L) | Reported range (mg/L) |
|---|---|---|
| Red wine | 3.0–5.0 | 0.5–10 |
| White wine | 1.5–3.5 | 0.3–6 |
| Rosé / sparkling | 1.5–3.0 | 0.3–5 |
Values are compiled from general wine-chemistry literature. Use them as typical midpoints, not guarantees for any specific bottle.
What Makes Iron Levels Vary So Much?
Iron in wine comes mainly from grapes, water, and contact with equipment. Varieties and regions differ because soil iron content, vineyard practices, and grape skin extraction vary. Red wines ferment with skins longer, which tends to pull more minerals — including iron — into the juice.
Winemaking is often a bigger factor than the grape itself. Juice can pick up iron from stainless steel tanks, pumps, valves, or bentonite fining agents. Old oak barrels with metal hoops and traditional tools can also contribute. This is why a single varietal can show noticeably different iron levels from one producer to another, and why modern wineries monitor iron to prevent cloudy wine and oxidation.
Precision Notes & Limitations
This tool gives an estimate based on typical concentrations, not a laboratory analysis. Real bottles can fall outside the ranges above. For diet planning, treat the result as a rough guide and round up when in doubt.
Also remember that iron from wine is non-heme iron, which the body absorbs less efficiently than heme iron from meat. Vitamin C in the same meal improves non-heme absorption, while tannins and calcium can reduce it — so the number on the label is not the same as the number your body keeps.
Frequently Asked Questions
Is wine a significant source of iron? For most people, no. A standard glass typically supplies less than 5% of the Daily Value. Heavy consumption, however, adds up quickly and could matter for someone with low iron stores.
Can wine contribute to iron overload? People with hereditary hemochromatosis absorb iron too readily; even moderate amounts of wine may be discouraged by their doctor. If you have this condition, discuss alcohol and iron intake with a healthcare provider.
Does cooking with wine change its iron content? The iron stays in the liquid, but volume changes. Simmering reduces water, concentrating the iron in the remaining sauce, while the total amount of iron in the dish stays roughly the same unless it reacts with cookware.
Why do some wines taste metallic? High iron is sometimes linked to metallic or off flavors, which is one reason wineries aim to keep iron below about 5–7 mg/L, well within safe dietary limits but above taste thresholds.