Filling a 2-tablespoon measure twice, or using 6 level teaspoons, or pouring 1 fluid ounce (about 29.57 mL) into a liquid measuring cup. A digital kitchen scale set to roughly 29.5 grams of water also delivers the same result with zero guesswork. Most home cooks already own one of these tools, so the right method is whichever one sits closest to your hand.
This walkthrough covers the equivalences, the dry-versus-liquid techniques, and the metric fallback so your next bake turns out the way the recipe developer intended.
What 1/8 Cup Equals in Common Kitchen Units
One-eighth of a cup sounds tiny until you notice how often it shows up. Spices, baking soda, melted butter, vanilla extract, and chopped nuts frequently land at 1/8 cup because that fraction balances the larger wet and dry ingredients around it.
Break the fraction down and it converts cleanly into units your measuring spoons and liquid cups already recognize. Two tablespoons equals exactly 1/8 cup. Six teaspoons fills the same volume. One US fluid ounce, the size of a standard shot, is also 1/8 cup. In metric, you are looking at approximately 29.57 milliliters, which sits between a single ounce and a full 30 mL jigger.
| Unit | Amount Equal to 1/8 Cup | Tool You’d Use |
|---|---|---|
| US tablespoons | 2 tbsp | Tablespoon measure |
| US teaspoons | 6 tsp | Teaspoon measure |
| US fluid ounces | 1 fl oz | Shot glass or 1 oz jigger |
| Milliliters | ~29.57 mL | Liquid measuring cup or metric beaker |
| 1/4 cup, half-filled | Half a 1/4 cup measure | 1/4 cup dry measure |
| Grams of water | ~29.5 g | Digital kitchen scale |
King Arthur Baking Company leans heavily on weight, and Food Network chefs tend to reach for tablespoons first. Both paths arrive at the same place. Pick the conversion your drawer offers and trust it.
The Tools You Already Have That Measure 1/8 Cup
A dedicated 1/8 cup measure exists, but most kitchen drawers skip it. Pyrex liquid sets, OXO angled measuring cups, and standard tablespoon-and-teaspoon sets from KitchenAid all handle the job without that missing piece. The fastest method depends on what you are measuring and what is clean at the moment.
The Fastest Scoop
Two tablespoons is the shortest distance between your hand and 1/8 cup. Reach for a 1-tablespoon measure, fill it level, then repeat. For dry ingredients this means leveling flush with a butter knife; for liquids, fill to the brim without sloshing. The two-scoop method takes roughly ten seconds and stays accurate to within a fraction of a gram.
When Spoons Are Dirty
A 1/4 cup measure filled halfway equals 1/8 cup exactly. This trick saves you when every tablespoon is caked with cocoa or sticky honey. Set the 1/4 cup on the counter, pour halfway up the interior wall, and eyeball the midpoint. For a more precise half-fill, add water first to locate the halfway line on the cup, mark it mentally, then dump the water and refill with your ingredient.
The Shot Glass Shortcut
A standard 1-ounce shot glass or jigger holds exactly 1 fluid ounce, which is the same as 1/8 cup. This works brilliantly for vanilla extract, soy sauce, lemon juice, or any thin liquid where precision matters less than getting the pour right. Reserve it for liquids only; dry ingredients will mound unevenly and leave you guessing at the true volume.
The Most Precise Option
A digital kitchen scale set to grams beats every volume tool for accuracy. Water weighs about 29.5 grams per 1/8 cup, so tare the scale, pour until it reads 29.5 g, and you have a measurement no tablespoon count can match. Honey clocks in around 42 grams per 1/8 cup, and flour lands near 16 grams, so non-water ingredients need a different target weight. The trade-off is speed: scales slow you down mid-sauté.
Wet conversions translate cleanly to tablespoons, but dry ingredients weigh differently than water on a scale.
Measuring 1/8 Cup of Dry Ingredients the Right Way
Dry ingredients hide most of their errors in packing. Flour scooped straight from the bag can hold 15 to 20 percent more volume than flour spooned loosely into a cup and leveled. Brown sugar pressed into a measuring cup varies so widely that professional bakers abandoned cup measurements for it decades ago. Treat 1/8 cup of any dry ingredient the way a chemist would treat a powder: gently, loosely, and with a leveling pass at the end.
The Spoon-and-Level Technique
Stir the ingredient in its container to break up clumps, then spoon it into your 1/8 cup equivalent (two tablespoons, or half a 1/4 cup) without pressing. Hold the cup over a sheet of parchment or a wide bowl and sweep the flat back of a butter knife across the rim. The result is a clean, level fill that matches what the recipe developer had in mind.
Sticky Ingredients Like Honey and Molasses
For viscous ingredients, lightly coat the inside of your measure with cooking spray or a thin film of neutral oil. The honey slides out cleanly instead of clinging to the sides, which is where most of the inaccuracy hides. King Arthur’s recipe testers apply this method every time they develop a sticky sweetener ratio, and the consistency shows in their reliably soft cookies.
Never pack flour, cocoa, or powdered sugar into a 1/8 cup measure unless the recipe explicitly says “packed.” Free-flowing scoops are the default in US home baking.
Measuring 1/8 Cup of Liquids Without Spills or Guessing
Liquid measuring cups have a pour spout, a clear glass body, and printed markings for a reason: they let you see the meniscus at eye level. Tilting the cup, holding it up to the light, or reading from a standing height introduces parallax, and parallax quietly adds or subtracts a full tablespoon from your measurement. For 1/8 cup, that is a 50 percent swing in the actual amount.
Set the Cup Down and Crouch
Place the liquid measuring cup on a flat countertop, not in your hand. Crouch so your eyes line up with the marking you are aiming for, then pour slowly until the bottom of the meniscus touches the line. The OXO angled measuring cup solves the crouching problem with its tilted interior, letting you read from a standing position while looking straight down.
Thin Versus Viscous Liquids
Vanilla extract, soy sauce, lemon juice, and water pour cleanly into a tablespoon measure without much fuss. Melted butter, honey, maple syrup, and warm cream need a different approach: warm them slightly so they flow and self-level, then pour into the liquid cup. Cold syrup mounds and refuses to settle, which throws off the reading even at eye level.
Reading the Meniscus Correctly
Water-based liquids curl slightly up the walls of a glass cup. Read the bottom of that curve, not the top. Oils and syrups behave the opposite way, dipping in the center, so read the lowest point of the dip instead. Getting this single detail right turns a so-so measurement into a precise one without changing anything else.
Converting 1/8 Cup to Metric for International Recipes
Recipes from Europe, Australia, and parts of Asia use the metric cup, which holds 250 mL rather than the US customary cup’s roughly 236.6 mL. That gap matters because 1/8 of a US cup is 29.57 mL, while 1/8 of a metric cup is 31.25 mL. A teaspoon or two of difference across a recipe can shift the texture of a cake or the spread of a cookie dough.
The Exact Metric Numbers
The US customary 1/8 cup sits at 29.5735 mL, which most kitchens round to 30 mL. The metric cup of 250 mL, divided by 8, gives 31.25 mL per 1/8 cup. British and Australian recipes occasionally use an imperial cup of 284 mL, which works out to 35.5 mL per 1/8. Knowing which system the recipe uses prevents silent rounding errors.
Why Weight Solves Everything
Grams do not care which cup system the recipe author used. A digital scale set to 29.5 g of water, or the specific gram weight of the ingredient listed, sidesteps the entire US-versus-metric debate. Food Network’s modern test kitchens publish recipes in grams for this exact reason; it removes the conversion step that trips up most home cooks.
| Cup System | Volume of 1 Cup | 1/8 Cup in mL |
|---|---|---|
| US customary | 236.6 mL | ~29.57 mL |
| Metric (AU/NZ) | 250 mL | ~31.25 mL |
| Imperial (UK) | 284 mL | ~35.5 mL |
When a recipe lists 30 mL and you own only US cups, fill to the 1/8 mark plus a small additional pour. When it lists 29 mL, fill to the 1/8 mark exactly. Both readings are close enough that the finished dish will not notice.
These metric numbers only matter once you stop second-guessing the cup itself, which is where most home cooks slip up.
Fixing Common 1/8 Cup Mistakes Before They Ruin the Recipe
Small measurements fail for predictable reasons: miscounted scoops, swapped cup types, packed dry ingredients, and a downward glance at a liquid cup instead of an eye-level read. Spotting the cause early is faster than re-baking a tray of cupcakes that spread into one giant pancake.
Miscounted Tablespoons
Two tablespoons equals 1/8 cup, not one heaping plus one half-full. Heaping tablespoons can hold nearly twice the volume of a level scoop, so a single rushed pour can double your intended amount without you noticing. Dump what you have and start over with two clean level scoops. The reset costs ten seconds and saves the recipe.
Wrong Cup Type for the Ingredient
A dry measuring cup is meant to be filled to the brim and leveled. A liquid measuring cup is meant to be read at the meniscus. Swapping them changes the amount you actually add: liquid cups leave headspace for pouring, dry cups have no spout and no clear markings. Keep them in their lanes and the measurement stays honest.
Overpacked Dry Ingredients
Flour, cocoa, and powdered sugar compact under the slightest pressure. If the first scoop felt dense, fluff the ingredient in its container with a fork or whisk, then spoon and level again. Brown sugar is the one exception: pack it firmly into the measure unless the recipe says otherwise, since loose brown sugar leaves air pockets that throw off moisture ratios.
Reading Liquid Measurements From Above
Looking down into a liquid cup from standing height makes the meniscus appear higher than it really is, so you under-pour. Reading from below makes it appear lower, so you over-pour. Wipe the cup, set it back on the counter, crouch to eye level, and pour until the meniscus hits the line cleanly.
Scaling Without Scaling the Small Amount
1/8 cup stays 1/8 cup regardless of whether the recipe makes one dozen cookies or five. Only multiply when the recipe itself instructs you to scale every ingredient. Allrecipes’ recipe scaler tool handles this automatically, but when scaling by hand, treat 1/8 cup as a fixed point and adjust the larger amounts around it.
The Bottom Line
Two level tablespoons, 6 teaspoons, or 1 fluid ounce: those three equivalences cover nearly every 1/8 cup situation you will run into. Use a dry cup and the spoon-and-level method for flour, sugar, and spices. Use a liquid cup at eye level for water, milk, oil, and extracts. When precision is non-negotiable, pull out a digital scale and measure in grams.
Each path leads to the same place, so the best method is the one that fits the ingredient in your hand.
FAQ
How many tablespoons equal 1/8 of a cup?
Two level US tablespoons are the exact equivalent of 1/8 cup. Fill a 1-tablespoon measure twice, leveling each scoop with the back of a knife, and you have a precise 1/8 cup without needing a dedicated measure.
Can you measure 1/8 of a cup with a tablespoon?
Yes. Two level tablespoons fill 1/8 cup to the exact volume. For dry ingredients, spoon the ingredient in loosely and level with a knife; for liquids, fill the tablespoon to the brim without letting it slosh over.
What is the easiest way to measure 1/8 of a cup?
Use a 1-tablespoon measure twice, or fill a 1/4 cup measure halfway. Both options take about ten seconds and rely on tools already in a standard kitchen drawer, so no specialty equipment is required.
Is 1/8 cup the same as 2 tablespoons?
In the US customary system, 1/8 cup and 2 tablespoons are identical volumes, equal to roughly 29.57 mL. The metric cup used in Australia and New Zealand is slightly larger, so confirm which system your recipe uses before converting.
How do you measure 1/8 cup without a 1/8 measuring cup?
Reach for a 1-tablespoon measure and scoop twice, or fill a 1/4 cup measure to its halfway point. A 1-fluid-ounce shot glass also holds exactly 1/8 cup for liquids, and a kitchen scale set to 29.5 grams of water covers any ingredient.
How many teaspoons are in 1/8 of a cup?
Six level US teaspoons fill a 1/8 cup measure. Fill a 1-teaspoon measure six times, leveling each scoop, and you reach the same volume as 2 tablespoons or 1 fluid ounce.
