ounces to grams

Convert ounces to grams with precision scale accuracy. Features Standard Avoirdupois vs Troy Gold toggles, mechanical culinary fraction decoder, and real-world weight matching.

Unit Converters
Standard Kitchen & Mail

Avoirdupois standard: 1 oz = 28.3495 g (16 oz = 1 lb)

SI Metric
g
oz (Avoir)
oz
Readable on scale
1 oz
Matches:A standard postal letter weight limit or a slice of whole wheat bread (~28 g / 1 oz)
Quick Presets
0.0284kg
0.063lbs
28,350mg

How to Convert Ounces to Grams (oz to g)

Step-by-step guide to calculating metric grams from imperial recipe ounces, postage weights, and precious metal troy ounces.

1

Choose the Correct Ounce System

Pick Standard Avoirdupois Ounce (1 oz = 28.3495 g) for international culinary recipes and mail packages, or Troy Ounce (1 ozt = 31.1035 g) for precious metal bullion.

2

Input Weight in Ounces (oz / ozt)

Type your ounce value (such as 1, 4, 8, 16 oz or 1 ozt) or choose a quick preset button to populate standard amounts instantly.

3

Read Converted Metric Grams (g)

Observe the computed value in grams immediately, calculated according to international metrology standards down to milligram precision.

4

Inspect Kitchen Dial Scale Fractions

See the fractional breakdown of your ounce reading to easily match mechanical analogue scales and traditional recipe instructions.

5

Track Auxiliary Industrial Units

Check simultaneous conversions in kilograms, pounds, and carats (1 g = 5 ct) for laboratory, dietary, or trade documentation.

6

Check Reference Match & Export

Verify the physical reference object corresponding to your entered weight and copy the complete weight data to your clipboard.

Frequently Asked Questions (FAQ)

Everything you need to know about grams, ounces, avoirdupois vs troy systems, and kitchen recipe conversions.

Q:What is the exact conversion between grams and ounces?

Under the international avoirdupois system agreed in 1959, 1 pound equals exactly 0.45359237 kg and contains 16 ounces. Therefore, 1 ounce equals exactly 28.349523125 grams. To convert grams to ounces, divide by 28.3495; to convert ounces to grams, multiply by 28.3495.

Q:What is the difference between an Avoirdupois Ounce and a Troy Ounce?

The standard Avoirdupois ounce (oz) is used for food, postal items, and general commodities and weighs approximately 28.35 g (with 16 oz in a 453.59 g pound). The Troy ounce (ozt) is used exclusively for precious metals (gold, silver, platinum) and gemstones, weighing 31.1035 g (with 12 ozt in a 373.24 g troy pound). A troy ounce is roughly 9.7% heavier than a standard ounce.

Q:How many grams are in 1/4 oz, 1/2 oz, and other common kitchen fractions?

Common kitchen ounce-to-gram equivalents include: 1/8 oz ≈ 3.54 g, 1/4 oz ≈ 7.09 g, 1/3 oz ≈ 9.45 g, 1/2 oz ≈ 14.17 g, 3/4 oz ≈ 21.26 g, 1 oz ≈ 28.35 g, 8 oz (1/2 lb) ≈ 226.8 g, and 16 oz (1 lb) ≈ 453.59 g.

Q:What is the difference between a fluid ounce (fl oz) and a weight ounce (oz)?

A dry ounce (oz) measures mass or weight, whereas a fluid ounce (fl oz) measures volume. 1 US fluid ounce of pure water weighs approximately 1.043 dry ounces (about 29.57 g). For ingredients with different densities like honey (denser) or flour (lighter), 1 fluid ounce will have a significantly different weight in grams.

Q:Why do baking recipes recommend grams instead of ounces?

Grams provide a finer decimal resolution (1 gram is much smaller than 1 ounce, which is ~28.35 grams), enabling precise measurement of active baking ingredients like yeast, salt, baking powder, and leaveners. Professional bakers use metric grams to ensure consistent dough hydration and repeatable results.

Q:How do jewelers calculate gold and precious metals in grams vs. troy ounces?

Official investment bullion coins (such as American Gold Eagles or South African Krugerrands) contain exactly 1 troy ounce (31.1035 g) of fine gold. Scrap gold and jewelry are weighed in grams or pennyweights (1 dwt = 1.555 g), and the pure gold weight is calculated by multiplying total grams by the karat purity fraction (e.g. 18k = 75.0% gold, 14k = 58.5% gold).

Mass(g) = Mass(oz) × 28.34952
  • Mass(g): Mass in grams.
  • Mass(oz): Weight in ounces.
  • 28.34952: Conversion constant.

Ounce to Gram Conversion Table

Ounce [oz]Gram [g]
0.01 oz0.2834952313 g
0.1 oz2.8349523125 g
1 oz28.349523125 g
2 oz56.69904625 g
3 oz85.048569375 g
5 oz141.747615625 g
10 oz283.49523125 g
20 oz566.9904625 g
50 oz1,417.47615625 g
100 oz2,834.9523125 g
1,000 oz28,349.523125 g

What is ounces to grams?

Convert grams to ounces with precision scale accuracy. Features Standard Avoirdupois vs Troy Gold toggles, mechanical culinary fraction decoder, and real-world weight matching. This tool is perfect for both the kitchen counter and the jeweler's bench. The intuitive interface bridges the gap between metric science and traditional imperial baking. By translating cold decimal numbers into tangible object references, it provides immediate spatial awareness of the mass you are measuring.

Practical Calculation Example

A baker in Chicago is trying a European pastry recipe calling for 100 grams of cocoa powder. They enter 100 into the GRAMS (G) field. Ensuring the Standard Ounce (Food / Mail) toggle is active, they see 3.527 oz. Looking at the READABLE ON SCALE section, they get a practical 3 1/2 oz reading, which is perfect for their mechanical kitchen scale. They click Copy Weight Data to save the converted recipe notes to their digital cookbook.

Reference Zones

Interface Element Practical Function Application
Standard Ounce / Troy Ounce Measurement Standard Toggles between the standard 28.34g ounce for food/mail and the heavier 31.1g ounce for precious metals.
READABLE ON SCALE Culinary Assistance Converts raw decimals into common fractions (e.g., 1/2, 1/4) found on analog mechanical scales.
MATCHES Physical Context Compares the calculated weight to everyday items (like an apple or a chocolate bar) for instant mental scaling.
Quick Presets Fast Entry Provides one-click buttons for common weight milestones like 100g, 250g, or 1kg.

History and Origin

The word "ounce" derives from the Latin uncia, meaning a twelfth part (of a Roman pound). The dual system we use today stems from the Middle Ages. The standard "Avoirdupois" ounce developed from the French wool trade, while the "Troy" ounce, exclusively used for weighing gold, silver, and gemstones, traces its roots to the merchants of Troyes, France, whose weight standards became heavily trusted across medieval Europe.

What is Ounce?

Definition & Usage

The ounce (symbol: oz) is a unit of mass used in most British derived customary systems of measurement. The common avoirdupois ounce is 1/16 of a common avoirdupois pound.

What is Gram?

Definition & Usage

The gram (symbol: g) is a metric system unit of mass. It equals one thousandth of a kilogram, the SI base unit of mass.