1/3 Cup Coconut Flour in Grams
1/3 cup of coconut flour is 42.7 g on a kitchen scale (spooned and levelled, King Arthur Baking). Very absorbent flour made from dried coconut flesh; a little goes a long way. A full cup weighs 128 g, and a third of a cup of that is 42.7 g. All the figures here are approximate conversions, so verify with a scale when the recipe really matters.
Getting 1/3 cup right the first time
Getting 1/3 cup right the first time matters because coconut flour is not an ingredient you can easily correct after the fact. Once it is mixed into a batter or a dough, you cannot take it out, and adding a little more of something else to compensate usually makes things worse. The recipe was tested with 42.7 g, measured spooned and levelled, and the closer you stay to that, the closer your result stays to the one the recipe writer tasted.
Worked examples
Doubling and halving from 1/3 cup
Halving a recipe is where 1/3 cup appears most often in real kitchens. A recipe written for a family might call for 1 1/2 cups of coconut flour; halved, that is 1/3 cup, or 42.7 g. The trap is halving by volume: half of 1 1/2 cups is easy to say and hard to measure, because few cup sets have a 3/4-cup measure and fewer still have a 1/3-cup one. Weighing 42.7 g sidesteps the problem entirely. And if you are doubling instead, two lots of 1/3 cup is 1 1/2 cups, which is 85.3 g — again, one number on the scale, no cup juggling, and the recipe stays in proportion.
Scaling a recipe that calls for 1/3 cup
A recipe for a shortcrust pastry calls for 1/3 cup of coconut flour, and you want to make one and a half times as much for guests. On the scale that is simple: 42.7 g times 1.5 is 64 g, and you weigh it straight into the bowl. Doing the same sum in cups means measuring a cup and an eighth, which no measuring cup marks, so most people guess — and guessing is how a good recipe goes wrong. The same logic works in reverse: halve the recipe and you need 21.3 g, which is 21.3 g on the scale and a fiddly 2.6 tablespoons by volume. coconut flour is used for gluten-free and keto baking, in small amounts, and the weighed amount keeps the ratio right at any scale.
A small batch built around 1/3 cup
Sometimes 1/3 cup is the whole point of the recipe, not a fraction of it. A small batch of a layer cake for two people often needs just 1/3 cup of coconut flour — 42.7 g — alongside the other ingredients, and at that scale there is nothing to hide behind: too much and the result is heavy or overpowering, too little and it is bland or falls apart. Weigh the 42.7 g first, before you start mixing, so you know the foundation is right. Once you know that 1/3 cup is 42.7 g, you can scale the same recipe up for four people by doubling to 85.3 g without ever touching a measuring cup, and the result will taste the same.
Coconut Flour cups to grams conversion table
| Cups | Grams | Tablespoons |
|---|---|---|
| 1/4 cup | 32 g | 4 |
| 1/3 cup | 42.7 g | 5.3 |
| 1/2 cup | 64 g | 8 |
| 2/3 cup | 85.3 g | 10.7 |
| 3/4 cup | 96 g | 12 |
| 1 cup | 128 g | 16 |
| 1 1/2 cups | 192 g | 24 |
| 2 cups | 256 g | 32 |
The tablespoon column shows how many tablespoons each amount equals: 1/3 cup is 5.3 tablespoons, and one tablespoon of coconut flour weighs about 8. A cup is 16 tablespoons, so the numbers in the table are just the cup weight divided by 16, rounded to one decimal place. For small amounts a scale that reads to the gram is far more reliable than a spoon, because a heaped tablespoon can weigh half as much again as a level one. Read the table from the 1/3 cup row outwards: every other row is a multiple of 42.7 g, so scaling a recipe up or down is simple multiplication.
How the weight was measured
Spooned and levelled means the ingredient is measured the way King Arthur Baking measures it: spooned and levelled. For coconut flour, that gives 128 g per cup, and a third of a cup of that is 42.7 g. The source for the figure is King Arthur Baking, and the confidence in the value is high. King Arthur Baking publishes a standard ingredient weight chart that recipe developers use as a reference, and this page follows it exactly rather than averaging across sources, because an average of two different measuring methods is a number that matches nobody's cup.
Practical guidance for coconut flour
Flour is the ingredient where measuring method matters most, and a third of a cup is small enough for a bad technique to ruin the ratio. Scooping the cup straight from the bag packs the flour down and can add a fifth to the weight; spooning it in loosely and levelling with a knife gives the figure used on this page, 128 per cup from King Arthur Baking, and a third of that is 42.7. That single technique — spoon and level — is worth learning properly, because it applies to every flour on this site. Sifting changes volume, not weight, so if a recipe calls for sifted flour, weigh 42.7 first and sift it afterwards. Flour also absorbs moisture from the air, so a bag left open in a humid kitchen will weigh more per cup than a fresh one, and the scale is the only tool that tells you the truth.
When the conversion matters most
1/3 cup of coconut flour shows up in recipes where the ratio is doing real work. coconut flour is used for gluten-free and keto baking, in small amounts, and in those recipes the amount is not decoration — it sets the texture, the structure or the flavour balance. In a sauce or a dressing, a few extra grams of coconut flour can tip the balance; in a baked good, they can change the crumb. That is why recipes written in grams are worth following in grams: the recipe writer tested 42.7 g, not a cup that happened to be full that day. If you are cooking by feel, a cup is fine; if you are baking to a recipe, weigh it. The difference between the two approaches is the difference between a recipe that works every time and one that works on a good day.
Scaling 1/3 cup up and down
Once you know that 1/3 cup of coconut flour is 42.7 g, the rest is arithmetic. A full cup is 128 g, half a cup is 64 g, and two cups is 256 g. Doubling a recipe that calls for 1/3 cup means weighing 85.3 g; halving it means 21.3 g, which is about 2.6 tablespoons. Writing the recipe in grams at this point is worth doing: the next time you make it, you weigh 42.7 g straight into the bowl and skip the measuring cup altogether. If you are scaling a recipe for a different tin size, convert every ingredient to grams first and then multiply — scaling by volume compounds the error on every ingredient at once, while scaling by weight keeps each one exact.
Common mistakes with coconut flour
- Measuring over the mixing bowl. Levelling over the bowl drops the excess straight into the batter, so you have added coconut flour you did not intend. Level over the bag or the sink.
- Scooping the cup from the bag. Scooping packs the flour down and can add several grams even to a third of a cup. Always spoon and level, or weigh 42.7.
- Using a liquid jug for a dry ingredient. A jug measures volume at eye level and has no straight edge to level against, so coconut flour measured in a jug is a guess. Use a dry cup or a scale.
- Measuring over the mixing bowl. Levelling over the bowl drops the excess straight into the batter. Level over the bag or the sink.
Storage and handling
Airtight container, cool and dry, up to 1 year. Keeping coconut flour stored properly also keeps its weight per cup stable: an ingredient that has absorbed moisture from the air weighs more per cup than a dry one, so a sealed container is not just about freshness, it is about measurement accuracy too. If a bag has been open for months in a humid kitchen, the first thing to do before a precise bake is to weigh the ingredient rather than trusting the cup. Label the container with the conversion — 1/3 cup is 42.7 g — and the next person to bake with it will thank you.
Frequently asked questions
How many grams is 1/3 cup of coconut flour?
1/3 cup of coconut flour weighs 42.7 g, measured spooned and levelled according to King Arthur Baking. That is a third of a cup of the full-cup weight of 128 g, and it is the figure to use when converting a recipe from cups to grams. All the figures on this page are approximate, so when a recipe really matters, verify with a kitchen scale.
How many tablespoons is 1/3 cup of coconut flour?
There are 5.3 tablespoons in 1/3 cup, whatever the ingredient. One tablespoon of coconut flour weighs about 8, so 5.3 tablespoons come to about 42.7 g. For amounts like this, a scale that reads to the gram is more reliable than spoons, because a heaped tablespoon can weigh half as much again as a level one.
How do I measure 1/3 cup of coconut flour without a scale?
Coconut flour is measured spooned and levelled, according to King Arthur Baking. Spoon it into a 1/3 cup measure, level the top with the back of a knife, and you will be close to 42.7 g. That is the best you can do without a scale — but be honest with yourself that it is an estimate. A basic digital kitchen scale costs less than a bag of good ingredients and removes the guesswork from every recipe, not just this one.
What is coconut flour used for?
Gluten-free and keto baking, in small amounts. Very absorbent flour made from dried coconut flesh; a little goes a long way. 1/3 cup — 42.7 g — is a common amount in small batches and scaled recipes, which is why this conversion comes up so often.
How should I store coconut flour?
Airtight container, cool and dry, up to 1 year. Good storage keeps the ingredient fresh and keeps its weight per cup consistent, because moisture absorbed from the air adds grams that the recipe did not ask for.
Can I scale a recipe that uses 1/3 cup of coconut flour?
Yes — convert to grams first, then multiply. 1/3 cup is 42.7 g, a full cup is 128 g, and two cups is 256 g, so doubling means 85.3 g and halving means 21.3 g. Scaling by weight keeps every ingredient in proportion, while scaling by volume compounds the error on each one.
Related conversions
Use the cups to grams converter flour substitute converter recipe scaler cups to grams hub for instant answers, or browse the cups to grams hub for the full ingredient list. Related pages: 1 cup of coconut flour in grams, 128 g of coconut flour in cups, tablespoons of coconut flour in grams, coconut flour guide, 1/3 Cup All-Purpose Flour in Grams, 1/3 Cup Bread Flour in Grams. See also our disclaimer about approximate conversions.