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Whether you are perfecting a croissant recipe, weighing bullion, or shipping a handmade candle across the globe, sooner or later you will have to jump between ounces and grams. Imperial and metric units often coexist in recipes, product labels, and online tutorials, so understanding the ounces to grams relationship is an everyday necessity.
This guide delivers everything you need calculator, quick-reference tables, conversion formula, and pro tips all in one place. You will also learn why an ounce is not always the same everywhere (hello, US vs UK ounces and fluid ounces) and how to avoid costly mistakes when you scale recipes, portion protein powder, or price precious metals. Let’s dive in!
How Many Grams in an Ounce? (Quick Answer)
- 1 ounce (oz) = 28.349 grams (g)
- Rounded for kitchen use: 1 oz ≈ 28 g
The official figure comes from the National Institute of Standards and Technology (NIST) and is accepted worldwide, making “28 grams per ounce” your go-to shortcut for mental math.
Printable Ounces to Grams Conversion Table
| Ounces (oz) | Grams (g) | Ounces (oz) | Grams (g) |
|---|---|---|---|
| 0.25 oz | 7.087 g | 12 oz | 340.194 g |
| 0.5 oz | 14.174 g | 14 oz | 396.893 g |
| 1 oz | 28.349 g | 24 oz | 680.388 g |
| 1.5 oz | 42.524 g | 32 oz | 907.185 g |
| 2 oz | 56.699 g | 40 oz | 1 133.982 g |
| 5 oz | 141.747 g | 50 oz | 1 417.476 g |
| 8 oz | 226.796 g | 64 oz | 1 814.369 g |
| 10 oz | 283.495 g | 100 oz | 2 834.952 g |
| 16 oz | 453.592 g | 128 oz | 3 628.739 g |
Tip: Print or bookmark this ounces to grams conversion table for quick reference in the kitchen or workshop.
Try the Free Ounces to Grams Calculator
Head over to calculator.soshareit.com/ounces-to-grams and enter any value—from 0.25 oz to 100 oz—to get an instant, accurate reading in grams. The tool supports:
- Decimal inputs (e.g., 1.75 oz)
- Bulk conversions up to 128 oz
- Reverse conversion (grams → ounces)
Prefer mobile? Add the page to your home screen and use it like an ounces to grams app—no installation required.
The oz → g Formula (Do-It-Yourself Method)
If you are stuck offline, the math is straightforward:
grams = ounces × 28.349523125Step-by-Step Example: Converting 10 oz to grams
- Write the formula: 10 × 28.349523125
- Multiply: 283.49523125
- Round sensibly: 283.5 g (for cooking) or 283.495 g (for lab work)
Use the same process for 0.5 oz, 8 oz, 32 oz, or any other value. If you often calculate by hand, memorize “oz × 28.35 = g” for a quick mental estimate.
Why Ounces to Grams Matters in the Kitchen
Consistent Results for Baking & Cooking
- Flour: Professional bakers weigh flour because 1 cup can swing ±30 g depending on humidity. Converting ounces to grams for flour locks in accuracy.
- Sugar & Butter: European recipes list butter in grams; American sticks list ounces. Our ounces-to-grams for sugar and butter guide keeps brownies chewy, not cakey.
- Protein Powder & Coffee: Fitness enthusiasts and baristas track macros or brew ratios at grams per ounce to eliminate guesswork.
Fluid Ounces vs Weight Ounces
A fluid ounce (fl oz) measures volume, not mass. Water’s 1 fl oz weighs about 29.57 g, but 1 fl oz of olive oil ≈ 26 g. Always check whether a recipe calls for imperial ounces (UK), US fluid ounces, or weight ounces before converting.
Related Weight & Mass Conversions
Your cooking, crafting, or shipping project might also need:
- Grams to ounces (reverse formula: g ÷ 28.349)
- Kilograms to ounces (kg → oz) and grams to kilograms (g → kg)
- Pounds to grams (lb → g) for bulk ingredients
- Grams to troy ounces when pricing gold or silver bullion
Find dedicated calculators on our site for each unit—no spreadsheets required.
Product-Specific Conversion Tips
| Ingredient | Ounces → Grams | Insider Advice |
|---|---|---|
| Flour | 1 oz ≈ 28 g | Spoon & level before weighing to avoid packed flour errors. |
| Sugar | 1 oz ≈ 28 g | Brown sugar packs tightly; weigh after lightly pressing. |
| Butter | 1 oz = 28.35 g | 1 US stick (4 oz) = 113.4 g; handy for frosting ratios. |
| Meat | 1 oz raw ≈ 28 g | Cooked weight drops ~25 %; weigh after cooking for calorie logs. |
| Protein Powder | Scoops vary | Always follow label grams per scoop, then back-change to ounces if needed. |
| Coffee Beans | 1 oz ≈ 28 g | Specialty coffee uses a 1:16 brew ratio—use grams for precision. |
| Precious Metals | 1 troy oz = 31.103 g | Gold & silver use troy ounces—double-check before trading. |
Frequently Asked Questions
Is 1 oz exactly 28 grams?
One avoirdupois ounce equals 28.349 grams. Rounding to 28 g is fine for home cooking.
How do I convert ounces to cups or tablespoons?
Volume conversions depend on ingredient density. Use our ounces to cups and ounces to tablespoons calculators for ingredient-specific results.
What is 0.5 oz in grams?
Half an ounce equals 14.174 grams—handy for spices.
Does the UK use the same ounce?
The UK still references ounces in older cookbooks, but the underlying unit (avoirdupois ounce) is the same 28.349 g used in the US.
How many grams in 8 oz of cheese?
Eight ounces equal 226.796 grams—perfect for a family-size mac and cheese.
Expert Tips for Accurate oz ↔ g Measurements
- Use a digital scale with 0.1 g readability for baking and pour-over coffee.
- Tare the container so you only measure ingredient weight.
- Avoid scooping flour directly with a cup; it packs the flour and skews ounce-to-gram ratios.
- Watch humidity: Hygroscopic ingredients like brown sugar gain moisture, changing grams per ounce over time.
- Label your bulk bins in both ounces and grams to simplify future conversions.
Beyond Ounces: Explore More Quick Converters
- kg to lbs (kilograms to pounds)
- lbs to kg (pounds to kilograms)
- grams to ounce quick conversion
Each tool is accessible from our navigation bar for instant switching—ideal when your recipe jumps between multiple unit systems.
Mastering ounces to grams conversion unlocks recipe consistency, accurate nutrition tracking, and precise cost calculations—no more “close enough” guesses. Bookmark calculator.soshareit.com/ounces-to-grams for your next batch of cookies, barbell load-out, or Etsy shipping label. With our quick-conversion chart, formula breakdown, and all-in-one calculator, you are fully equipped to handle any oz to g question that comes your way. Happy measuring!