Grams to Ounces Conversion
Grams to Ounces Calculator
Convert grams to ounces instantly with the calculator above, or browse the full conversion table for every gram value from 1 to 1000. Because grams and ounces both measure mass, the conversion is fixed by international agreement — no density, no ingredient, no guesswork. One ounce equals exactly 28.349523125 grams, a relationship set by the 1959 International Yard and Pound Agreement and maintained today by NIST.
Grams to Ounces at a Glance
How to Convert Grams to Ounces
Converting grams to ounces is a single multiplication or division — both units measure mass, so there’s no density variable to account for. The exact international relationship is:
Grams = Ounces × 28.349523125
For example, 100 grams ÷ 28.349523125 = 3.5274 ounces. The reverse: 3.5274 ounces × 28.349523125 = 100 grams. For quick mental math, divide grams by 28 and add about 1.2 % — it gets you within rounding distance of the exact answer.
Which Ounce Should You Use?
“Ounce” is one of the most overloaded words in measurement. Three different ounces are still in active use, and they each give a different gram equivalent:
- Standard ounce (formally the “avoirdupois” ounce): 28.349523125 g. The default ounce for food, kitchen scales, postage, retail packaging, and nutrition labels. Whenever a recipe or label says “oz” without qualification, this is the unit being used.
- Troy ounce: 31.1034768 g. Used for gold, silver, platinum, and other precious metals. About 9.7 % heavier than the standard ounce, so 100 g = 3.5274 standard ounces but only 3.2151 troy ounces.
- Fluid ounce: a volume unit (≈ 29.57 mL in the US, ≈ 28.41 mL in the UK), not a mass unit. Never use fluid ounces in a grams-to-ounces conversion.
Grams to Ounces Quick Reference Chart
Complete Grams to Ounces Conversion Table
This table covers the most-searched gram amounts and their exact ounce equivalents, plus pounds + ounces for larger values. For any value not listed, use the calculator at the top of the page or click through to a dedicated conversion page.
| Grams | Ounces (oz) | Troy oz | Pounds + oz | View page |
|---|---|---|---|---|
| 1 g | 0.0353 oz | 0.0322 oz t | 0 lb 0.04 oz | View → |
| 5 g | 0.1764 oz | 0.1608 oz t | 0 lb 0.18 oz | View → |
| 10 g | 0.3527 oz | 0.3215 oz t | 0 lb 0.35 oz | View → |
| 15 g | 0.5291 oz | 0.4823 oz t | 0 lb 0.53 oz | View → |
| 20 g | 0.7055 oz | 0.6430 oz t | 0 lb 0.71 oz | View → |
| 25 g | 0.8818 oz | 0.8038 oz t | 0 lb 0.88 oz | View → |
| 28 g | 0.9877 oz | 0.9002 oz t | 0 lb 0.99 oz | View → |
| 30 g | 1.0582 oz | 0.9645 oz t | 0 lb 1.06 oz | View → |
| 50 g | 1.7637 oz | 1.6075 oz t | 0 lb 1.76 oz | View → |
| 75 g | 2.6455 oz | 2.4113 oz t | 0 lb 2.65 oz | View → |
| 100 g | 3.5274 oz | 3.2151 oz t | 0 lb 3.53 oz | View → |
| 113 g | 3.9860 oz | 3.6331 oz t | 0 lb 3.99 oz | View → |
| 125 g | 4.4092 oz | 4.0188 oz t | 0 lb 4.41 oz | View → |
| 150 g | 5.2911 oz | 4.8226 oz t | 0 lb 5.29 oz | View → |
| 200 g | 7.0548 oz | 6.4301 oz t | 0 lb 7.05 oz | View → |
| 227 g | 8.0072 oz | 7.2982 oz t | 0 lb 8.01 oz | View → |
| 250 g | 8.8185 oz | 8.0377 oz t | 0 lb 8.82 oz | View → |
| 300 g | 10.5822 oz | 9.6452 oz t | 0 lb 10.58 oz | View → |
| 400 g | 14.1096 oz | 12.8603 oz t | 0 lb 14.11 oz | View → |
| 454 g (≈1 lb) | 16.0144 oz | 14.5964 oz t | 1 lb 0.01 oz | View → |
| 500 g | 17.6370 oz | 16.0754 oz t | 1 lb 1.64 oz | View → |
| 600 g | 21.1644 oz | 19.2905 oz t | 1 lb 5.16 oz | View → |
| 700 g | 24.6918 oz | 22.5056 oz t | 1 lb 8.69 oz | View → |
| 750 g | 26.4555 oz | 24.1131 oz t | 1 lb 10.46 oz | View → |
| 800 g | 28.2192 oz | 25.7207 oz t | 1 lb 12.22 oz | View → |
| 900 g | 31.7466 oz | 28.9358 oz t | 1 lb 15.75 oz | View → |
| 1000 g (1 kg) | 35.2740 oz | 32.1507 oz t | 2 lb 3.27 oz | View → |
Units of Measurement
Grams and ounces are both units of mass — they measure how much matter an object contains, not its volume. That’s why converting between them is a fixed multiplication: the ingredient or material doesn’t change the answer. A gram of feathers and a gram of lead both weigh exactly the same; they just occupy wildly different volumes.
What is a Gram?
A gram is the metric system’s everyday unit of mass, defined as one-thousandth of a kilogram (the SI base unit). The kilogram itself has been defined since 2019 in terms of Planck’s constant, making the gram an absolute reference that doesn’t depend on a physical artifact. The abbreviation for gram is “g.” Grams are the default unit on kitchen scales outside the United States, on every pharmaceutical and laboratory balance worldwide, and on most international food labels.
What is an Ounce?
An ounce is an imperial / US customary unit of mass, equal to 1/16 of a pound. The standard (avoirdupois) ounce was set at exactly 28.349523125 grams by the 1959 International Yard and Pound Agreement signed by the US, UK, Australia, Canada, New Zealand, and South Africa. The abbreviation is “oz.” Note that “ounce” can also refer to a troy ounce (31.1034768 g, used for precious metals) or a fluid ounce (a unit of volume, not mass) — context determines which one applies.
Grams Converted to Other Weight Units
| Unit | Grams Equivalent |
|---|---|
| 1 milligram (mg) | 0.001 grams |
| 1 centigram (cg) | 0.01 grams |
| 1 decigram (dg) | 0.1 grams |
| 1 dekagram (dag) | 10 grams |
| 1 hectogram (hg) | 100 grams |
| 1 kilogram (kg) | 1,000 grams |
| 1 metric ton (t) | 1,000,000 grams |
| 1 ounce (oz) | 28.349523125 grams |
| 1 troy ounce (oz t) | 31.1034768 grams |
| 1 pound (lb) | 453.59237 grams |
| 1 stone (st) | 6,350.29318 grams |
| 1 dram (dr) | 1.7718451953125 grams |
| 1 grain (gr) | 0.06479891 grams |
| 1 pennyweight (dwt) | 1.55517384 grams |
| 1 carat (ct) | 0.2 grams |
Ounces Converted to Other Weight Units
| Unit | Ounces Equivalent |
|---|---|
| 1 gram (g) | 0.035273962 oz |
| 1 kilogram (kg) | 35.27396195 oz |
| 1 milligram (mg) | 0.000035274 oz |
| 1 pound (lb) | 16 ounces |
| 1 stone (st) | 224 ounces |
| 1 ton (short, US) | 32,000 ounces |
| 1 dram (dr) | 0.0625 oz (1/16 oz) |
| 1 troy ounce (oz t) | 1.0971428571 oz (avdp) |
| 1 carat (ct) | 0.0070547924 oz |
| 1 grain (gr) | 0.0022857143 oz |
Real-World Reference: What Do These Weights Look Like?
Numbers on a scale are easier to picture when you can compare them to everyday objects. Use this reference whenever you don’t have a scale handy and need to estimate a weight from sight or feel.
Frequently Asked Questions
How many ounces are in a gram?
One gram equals approximately 0.0353 ounces (avoirdupois). The exact value is 0.03527396195 oz, derived from the inverse of the international factor of 28.349523125 grams per ounce.
How many grams are in an ounce?
One ounce equals exactly 28.349523125 grams. This value was set by the 1959 International Yard and Pound Agreement and is recognised by NIST and every major standards body worldwide.
What is the formula to convert grams to ounces?
Divide the number of grams by 28.349523125 to get ounces. Or, equivalently, multiply by 0.03527396195. To go the other way, multiply ounces by 28.349523125.
Does the grams-to-ounces conversion change with the ingredient?
No. Both grams and ounces measure mass, so the conversion is fixed regardless of what is being weighed. 100 grams of flour, water, or lead all equal 3.5274 ounces. (Ingredient density only matters when converting between mass and volume — for example, grams to cups or grams to teaspoons.)
What’s the difference between a standard ounce and a troy ounce?
A standard (avoirdupois) ounce is 28.349523125 g and is used for food, postage, and consumer goods. A troy ounce is 31.1034768 g, about 9.7 % heavier, and is used exclusively for precious metals like gold, silver, platinum, and palladium. Bullion prices and coin specifications are always quoted in troy ounces.
How many grams are in a pound?
One pound (16 ounces) equals exactly 453.59237 grams. So 1 kg ≈ 2.2046 lb, and conversely 1 lb ≈ 0.4536 kg.
Is a fluid ounce the same as an ounce?
No. A fluid ounce (fl oz) is a unit of volume, while an ounce (oz) is a unit of mass. Confusingly, they share a name because, for water specifically, 1 fluid ounce of water happens to weigh approximately 1 ounce. For any other substance the two values differ. Never use fluid ounces in a grams-to-ounces conversion.
How do I quickly estimate grams to ounces in my head?
Divide the gram value by 28 for a rough answer, then add about 1.2 % for accuracy. For example, 100 g ÷ 28 ≈ 3.57, plus 1.2 % gives about 3.53 oz — close to the exact value of 3.5274 oz.
What’s the most accurate way to measure grams?
Use a calibrated digital kitchen or pocket scale that reads in grams (most modern scales let you switch between g and oz at the press of a button). Avoid going through volume units — converting through cups or teaspoons introduces error every time, because volume readings depend on packing, sifting, and humidity.
Are these conversions valid in the UK, Australia, and Canada?
Yes. The 1959 International Yard and Pound Agreement was signed by the US, UK, Australia, Canada, New Zealand, and South Africa, so all six countries use exactly the same definition: 1 ounce = 28.349523125 grams. The conversion is identical wherever the standard ounce is used.
Popular Grams to Ounces Conversions
These are the gram amounts our visitors look up most often. Each link opens a dedicated calculator with the precise ounce value, troy-ounce equivalent, full multi-unit breakdown, and printable chart.
More Frequently Searched Gram Amounts
Other Weight Conversion Calculators
- Ounces to Grams — the reverse direction
- Grams to Pounds
- Grams to Kilograms
- Kilograms to Pounds
- Grams to Milligrams
- Pounds to Ounces
Other Cooking Unit Conversion Calculators
- Grams to Cups (ingredient-dependent)
- Grams to Teaspoons (ingredient-dependent)
- Grams to Tablespoons (ingredient-dependent)