Ounces (oz)
0
Equivalent mass
Accurate mass conversion between grams (g) and ounces (oz)
Convert grams to ounces instantly with precise calculations. Includes reverse ounces to grams conversion, kilograms, pounds, milligrams, and stones outputs, full formula reference, and mass conversion tables for 2026.
Professional mass conversion for cooking, baking, nutrition, jewellery, fitness, postal services, and international trade in 2026
Convert grams to ounces using the exact international definition: 1 avoirdupois ounce = 28.349523125 grams (exact, established by the international yard and pound agreement of 1959). This makes 1 gram = 0.03527396195 oz. Our tool delivers precise results across six mass units simultaneously — oz, g, kg, mg, lb, and stones — giving you a complete multi-unit breakdown from a single input value with no rounding errors, essential for cooking, nutrition labelling, postal weighing, and international trade in 2026.
Switch seamlessly between grams to ounces and ounces to grams conversion modes. Whether you are converting a US recipe ingredient from ounces to grams for metric kitchen scales, reading a nutrition label that lists serving sizes in both units, calculating postage for international parcels, weighing precious metals for trading, or tracking food intake across apps that use different unit systems, both directions are covered instantly from a single input value without manual calculation in 2026.
Essential for international cooking and baking recipe conversion, dietary and nutritional analysis, postal and courier weight calculation, precious metals and gemstone trading, pharmaceutical and supplement dosing, fitness and bodybuilding nutrition tracking, retail food packaging and labelling compliance, and any field where metric gram measurements must be reconciled with imperial ounce values. The gram-to-ounce conversion is among the most frequently performed mass conversions worldwide in 2026, used daily by home cooks, professional chefs, nutritionists, jewellers, and logistics professionals.
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The gram (g) is the fundamental mass unit of the metric system, equal to one thousandth of the SI base unit kilogram. The ounce (oz) — specifically the avoirdupois ounce — is the standard ounce used in everyday commerce in the United States, UK (for food), Canada, and Australia for general mass measurement. The conversion factor is exact: 1 avoirdupois ounce = 28.349523125 grams, established precisely by the international yard and pound agreement signed in 1959 by the US, UK, Australia, Canada, New Zealand, and South Africa. This makes 1 gram = 1 ÷ 28.349523125 = 0.035273961950 ounces. There are exactly 16 avoirdupois ounces in one avoirdupois pound (453.59237 g), which follows directly from the same 1959 definition.
It is important to distinguish the avoirdupois ounce (the everyday ounce used for food, postal, and general measurement — 28.3495 g) from the troy ounce (used for precious metals — 31.1035 g) and the fluid ounce (a volume unit, not mass). This converter uses the avoirdupois ounce exclusively, which is the ounce indicated on food packaging, postal scales, kitchen scales, and retail weight labels in Australia, the US, UK, and Canada in 2026. When buying gold, silver, or platinum, be aware that the price per ounce refers to the troy ounce (31.1035 g), which is about 10% heavier than the avoirdupois ounce. See NIST for official definitions at nist.gov.
1 gram = 0.035274 oz = 0.001 kg = 1,000 mg. 1 ounce (avoirdupois) = 28.349523125 g exactly. 16 oz = 1 lb = 453.59237 g. These relationships are exact by international definition since 1959.
The table below covers the most commonly needed gram values for ounce conversion in cooking, baking, nutrition, postal, and retail contexts in 2026. For related mass conversions, see our Micrograms to Milligrams Converter.
| Grams (g) | Ounces (oz) | Pounds (lb) | Kilograms (kg) | Common Reference |
|---|---|---|---|---|
| 1 g | 0.03527 oz | 0.002205 lb | 0.001 kg | Paperclip / small pill |
| 5 g | 0.17637 oz | 0.011023 lb | 0.005 kg | Teaspoon of sugar |
| 10 g | 0.35274 oz | 0.022046 lb | 0.010 kg | Two teaspoons of flour |
| 14.175 g | 0.5 oz | 0.03125 lb | 0.014175 kg | Half ounce exactly |
| 28.3495 g | 1 oz | 0.0625 lb | 0.028350 kg | 1 ounce exactly |
| 50 g | 1.7637 oz | 0.11023 lb | 0.05 kg | Small chocolate bar |
| 56.699 g | 2 oz | 0.125 lb | 0.05670 kg | 2 ounces exactly |
| 85.049 g | 3 oz | 0.1875 lb | 0.08505 kg | Deck of playing cards weight |
| 100 g | 3.52740 oz | 0.22046 lb | 0.1 kg | 100 g — key cooking reference |
| 113.398 g | 4 oz (¼ lb) | 0.25 lb | 0.11340 kg | Quarter pound burger patty |
| 150 g | 5.29109 oz | 0.33069 lb | 0.15 kg | Average chicken breast |
| 200 g | 7.05479 oz | 0.44092 lb | 0.2 kg | Common food portion |
| 226.796 g | 8 oz (½ lb) | 0.5 lb | 0.22680 kg | Half pound exactly |
| 250 g | 8.81849 oz | 0.55116 lb | 0.25 kg | Standard butter block (AU) |
| 340.194 g | 12 oz (¾ lb) | 0.75 lb | 0.34019 kg | Three-quarter pound |
| 453.592 g | 16 oz | 1 lb | 0.45359 kg | 1 pound exactly |
| 500 g | 17.6370 oz | 1.10231 lb | 0.5 kg | Half kilogram / standard pack |
| 1,000 g | 35.2740 oz | 2.20462 lb | 1 kg | 1 kilogram exactly |
Use this reverse table when reading a US recipe, product label, or weight specification in ounces and needing the gram equivalent for metric kitchen scales, nutritional databases, or Australian/European compliance labelling in 2026.
| Ounces (oz) | Grams (g) | Kilograms (kg) | Pounds (lb) | Common Reference |
|---|---|---|---|---|
| 0.25 oz | 7.087 g | 0.007087 kg | 0.015625 lb | Quarter ounce / pinch of spice |
| 0.5 oz | 14.175 g | 0.014175 kg | 0.03125 lb | Half ounce |
| 1 oz | 28.3495 g | 0.028350 kg | 0.0625 lb | 1 ounce exactly |
| 2 oz | 56.699 g | 0.056699 kg | 0.125 lb | Shot glass / small portion |
| 3 oz | 85.049 g | 0.085049 kg | 0.1875 lb | Standard serve of fish/meat |
| 4 oz | 113.398 g | 0.113398 kg | 0.25 lb | Quarter pound / large egg |
| 5 oz | 141.748 g | 0.141748 kg | 0.3125 lb | Standard chocolate bar (US) |
| 6 oz | 170.097 g | 0.170097 kg | 0.375 lb | Typical yoghurt serve |
| 8 oz | 226.796 g | 0.226796 kg | 0.5 lb | Half pound / cup of water |
| 10 oz | 283.495 g | 0.283495 kg | 0.625 lb | Tin of tuna (US standard) |
| 12 oz | 340.194 g | 0.340194 kg | 0.75 lb | Standard US can / ¾ lb |
| 14 oz | 396.893 g | 0.396893 kg | 0.875 lb | Large tin / 7/8 lb |
| 16 oz | 453.592 g | 0.453592 kg | 1 lb | 1 pound exactly |
| 32 oz | 907.185 g | 0.907185 kg | 2 lb | 2 pounds |
| 35.274 oz | 1,000 g | 1 kg | 2.20462 lb | 1 kilogram exactly |
The gram-to-ounce conversion is one of the most common mass conversions performed daily across cooking, retail, health, and industry.
Recipe conversion between US and metric measurements is the single most common use of the grams-to-ounces conversion. American recipes list flour, sugar, butter, and ingredients in cups, ounces, and pounds; Australian, British, and European recipes use grams and kilograms. A US recipe calling for 8 oz of cream cheese equals 226.8 g; 4 oz of butter equals 113.4 g; and 1 lb of ground beef equals 453.6 g. Digital kitchen scales sold in Australia display in grams, making this conversion essential for any cook working with American cookbooks, YouTube recipes, or imported food products in 2026.
Nutrition labels in Australia and the EU list serving sizes and nutrient quantities in grams, while many US products list them in ounces. Popular fitness apps like MyFitnessPal and Cronometer allow logging in both units, but food databases often use different default units across regions. A 100 g serving (a common dietary reference) equals 3.527 oz. A standard protein serve of 30 g equals 1.058 oz. Nutritionists, dietitians, and individuals tracking macronutrients for weight management, muscle building, or medical diets use gram-to-ounce conversion constantly when working with international food databases in 2026.
International postal and courier services calculate shipping costs by weight, with different carriers using grams (Australia Post, Deutsche Post, Royal Mail), ounces (USPS for letters and small parcels), or pounds (FedEx, UPS in the US). Australia Post charges domestic parcel rates by gram-based weight tiers; USPS Priority Mail uses ounces for items under 1 lb. E-commerce sellers shipping internationally from Australia to the US or vice versa must convert package weights between grams and ounces when completing customs declarations, calculating postage, and comparing carrier rates in 2026.
Precious metals — gold, silver, platinum, and palladium — are universally traded by the troy ounce (31.1035 g), while jewellery is often weighed and described in grams for retail sale. A gold necklace weighing 10 g equals 0.3215 troy oz. Silver bullion coins such as the Australian Silver Kookaburra contain exactly 1 troy oz = 31.1035 g of fine silver. Jewellers, bullion dealers, and precious metal investors convert between grams and (troy) ounces constantly. Note: this converter uses the avoirdupois ounce (28.3495 g) for general use — for precious metals, divide grams by 31.1035 for the troy ounce equivalent.
Pharmaceutical products, vitamins, and health supplements are labelled in grams or milligrams in Australia and the EU, but often in ounces in the US market — particularly for protein powders, weight-loss supplements, and sports nutrition products. A 2 lb (32 oz) tub of protein powder equals 907.2 g; a 12 oz bottle of liquid supplement equals 340.2 g. Pharmacists, health food store staff, and consumers importing supplements from the US must convert ounce-labelled quantities to grams when verifying compliance with Australian TGA labelling requirements and calculating serving sizes in 2026.
Bodybuilders, athletes, and fitness enthusiasts tracking daily protein, carbohydrate, and fat intake routinely weigh food portions in grams using kitchen scales, then cross-reference US nutritional data expressed in ounces. A 6 oz (170 g) chicken breast contains approximately 38 g of protein; a 4 oz (113 g) salmon fillet contains about 23 g of protein. Pre-workout and post-workout supplements are often sold in US-sized containers with serving sizes in scoops or ounces, requiring conversion to grams for precise macro tracking. Fitness coaches working with international clients switch between units constantly in 2026.
The simplest mental shortcut: divide grams by 28 and add about 1.25%, or simply divide by 28.35. For a quick kitchen estimate: 100 g ≈ 3.5 oz, 200 g ≈ 7 oz, 250 g ≈ 8.8 oz ≈ 9 oz, 500 g ≈ 17.6 oz ≈ 17½ oz. For the reverse (oz to g): multiply oz by 28 for a rough estimate, or by 28.35 for precision — e.g., 4 oz × 28.35 = 113.4 g. Memory anchors: 1 oz = 28.35 g, 4 oz = 113.4 g (¼ lb), 8 oz = 226.8 g (½ lb), 16 oz = 453.6 g (1 lb). Once you know these four, you can estimate any ounce quantity in grams instantly.
Converting grams to ounces requires a single division by 28.349523125. Here is the complete step-by-step process including all related mass units.
There are three different "ounces" in common use, and confusing them leads to significant errors. The avoirdupois ounce (28.3495 g) is the everyday ounce used for food, body weight, postal, and general measurement — this is what this converter uses. The troy ounce (31.1035 g) is used exclusively for precious metals (gold, silver, platinum) and is approximately 10% heavier than the avoirdupois ounce. A gold price of "USD 2,000 per ounce" always means USD 2,000 per 31.1035 g, not 28.3495 g. The fluid ounce (fl oz) is a unit of volume, not mass — 1 US fl oz = 29.5735 mL; 1 UK/Australian fl oz = 28.4131 mL. Never use a mass converter to convert fluid ounces, as the conversion to grams depends on the density of the liquid.
The avoirdupois ounce (oz) is a unit of mass equal to exactly 28.349523125 grams, defined by the international yard and pound agreement of 1959. It forms part of the avoirdupois system used for everyday commerce in the US, UK, Australia, and Canada. The avoirdupois system uses 16 ounces per pound and 14 pounds per stone. The separate troy ounce (31.1035 g) is used for precious metals. Both the gram and ounce are defined in relation to the SI base unit kilogram, maintained by the BIPM and republished by national standards bodies including NIST in the US and the National Measurement Institute (NMI) in Australia.
NIST SI Reference →Converting between grams and ounces is essential for international recipe use. Australian, British, and European recipes use grams and kilograms; American and some Canadian recipes use cups, ounces, and pounds. Digital kitchen scales (recommended by professional chefs and bakers for precision) display in grams by default in Australia. When baking especially — where the ratio of flour, fat, liquid, and leavening is critical — precise gram measurements produce more consistent results than volumetric cup measures. Our grams-to-ounces converter is designed to be fast and accurate for kitchen use in 2026.
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