The exact conversion for dry ingredients from weight (grams) to volume (tablespoons) is not always straightforward, as it depends on the density of the ingredient. For oats, the type and how they are measured can affect the result. As a general rule, however, 20g of oats is approximately two tablespoons. This is because one level tablespoon of rolled or quick oats typically weighs around 10 grams.
The Simple Calculation for Oats
To get a quick and reliable conversion, especially for everyday cooking and meal prep, remember this basic formula:
- 10g of rolled oats ≈ 1 level tablespoon
- Therefore, 20g of rolled oats ≈ 2 level tablespoons
This simple rule provides a consistent and easy way to measure out a standard serving size for your morning oatmeal or baking recipes, even when you're in a hurry and can't find your digital scale.
The Importance of Oat Type
Not all oats are created equal, and their processing directly impacts their density and weight per tablespoon. The primary types are rolled oats, quick/instant oats, and steel-cut oats. Because they are processed differently, they have varying densities.
- Rolled Oats: These are oat groats that have been steamed and rolled into flat flakes. They are of moderate density and are the basis for the 10g per tablespoon rule.
- Quick/Instant Oats: These are rolled thinner and cut smaller than rolled oats, so they cook faster. While they are lighter in volume, their weight per tablespoon is very similar to rolled oats, making the 2 tbsp per 20g conversion reliable.
- Steel-Cut Oats: These are oat groats that have been chopped into smaller pieces rather than rolled. Their density is higher than rolled oats, meaning a tablespoon of steel-cut oats will weigh more than 10 grams. If you are using steel-cut oats, a slightly smaller volume will be required to hit 20g.
How to Measure Accurately Without a Scale
For the most precise measurement without a scale, consistency is key. Here are some tips for using a measuring spoon:
- Use a Leveling Technique: Don't just scoop and guess. Use the back of a knife or a similar flat edge to scrape across the top of the tablespoon, ensuring the oats are perfectly level with the rim. This removes any excess and provides a more consistent measurement.
- Avoid Compacting: When filling the spoon, do not press the oats down. Scoop them lightly to fill the spoon to the top. Compacting the oats will increase their density and result in a heavier, inaccurate measurement.
- Consider Oat Consistency: Some brands or batches of oats may have slightly different textures. For example, if you have a particularly finely cut quick oat, it might pack more densely. For most purposes, however, this variation is negligible.
Comparison of Oat Types and Measurements
To highlight the difference in density, the following table compares how 20g would be measured for different oat varieties, though the standard measurement for rolled and quick oats remains consistent for most recipes.
| Oat Type | Approximate Weight per 1 Level Tablespoon | Approximate Tablespoons for 20g | 
|---|---|---|
| Rolled Oats | 10 grams | ~2 Tablespoons | 
| Quick/Instant Oats | ~10 grams | ~2 Tablespoons | 
| Steel-Cut Oats | ~12-13 grams | ~1.5 Tablespoons | 
The Context of a 20g Serving
Twenty grams is a relatively small portion, especially when compared to a typical recommended serving size of 40-50 grams for a bowl of oatmeal. However, a 20g portion is useful for a few purposes:
- Small topping: A 20g portion is perfect for sprinkling over yogurt, a smoothie bowl, or fruit salad.
- Recipe ingredient: Many recipes for baked goods or savory dishes call for a small amount of oats as a binder or texture enhancer.
- Calorie-controlled portion: For those counting calories or macros, a 20g portion is a precise way to add a measured amount of carbohydrates and fiber to a meal.
For more information on measuring and cooking different types of oats, you can explore the resources provided by the Quaker Oats company, a well-known brand in the industry.
Conclusion
In short, 20g of oats is approximately two level tablespoons, based on the common density of rolled and quick oats. While minor variations exist between different oat types, this conversion is a highly reliable estimate for daily cooking and baking needs. By using a leveling technique and being mindful of the oat type, you can achieve a consistent and accurate measurement without relying on a kitchen scale. This simple conversion allows for easy and fast meal preparation, ensuring you get the right amount of wholesome oats every time.