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Free Ounces to Grams Converter

Baking and cooking recipes often demand precision, especially when following instructions written for different measurement systems. One ounce equals 28.35 grams—a critical conversion for anyone scaling recipes or verifying ingredient weights on food packages.

1 oz = 28.35 g

Pick any units and edit either box — it converts instantly in your browser.

Quick answer

Multiply ounces by 28.35 to get grams. A standard serving of cereal (1 ounce) weighs about 28 grams. This conversion is essential for bakers, chefs, and anyone following metric or US recipes interchangeably.

Formula & method

grams = ounces × 28.349523125
  • oz — value in ounces
  • g — result in grams
  • 28.349523125 — exact conversion factor (1 oz = 28.349523125 g)

To convert back, divide by 28.349523125 (1 g = 0.035274 oz).

Ounces to Grams — common values

Ounces (oz)Grams (g)
0.5 oz14.175 g
1 oz28.35 g
2 oz56.699 g
4 oz113.398 g
8 oz226.796 g
12 oz340.194 g
16 oz453.592 g
32 oz907.185 g

Examples

Example 1: A small spice portion
Input
0.5 oz
Result
14.175 g
Why
Half an ounce of nutmeg or cinnamon for a recipe card
Example 2: Chocolate chips or nuts
Input
2 oz
Result
56.699 g
Why
Typical ingredient weight for cookies or granola
Example 3: A chocolate bar
Input
12 oz
Result
340.194 g
Why
Standard size of a commercial chocolate bar or candy portion
Example 4: One pound of flour
Input
16 oz
Result
453.592 g
Why
A standard bag weight for baking flour in US measurements

Common mistakes

  • Rounding too early. Multiply by the full factor (28.349523125) first, then round only the final grams value.
  • Converting the wrong way. This page goes Ounces → Grams; to go back, divide by 28.349523125.

Frequently asked questions

How many grams is 1 ounce?

Exactly 28.349523125 grams. This is the internationally accepted conversion used in nutrition labels, recipe databases, and commercial food production.

Why is baking weight so important?

Bakers rely on weight instead of volume because flour density varies with humidity. A 'cup' of flour can differ by 15–20 grams between kitchens, but an ounce is always 28.35 grams. That's why professional recipes list ingredients in ounces or grams.

Are 'ounces' the same for food and precious metals?

No. Food uses avoirdupois ounces (28.35 g), while gold and gemstones use troy ounces (31.10 g). This converter is for food and regular objects.

How do I measure ounces at home without a scale?

If you don't have a scale, check the product packaging—most foods list grams on the label. For recipes, a standard kitchen scale under 20 dollars will measure ounces and grams accurately.

Can I round the conversion for everyday cooking?

For most recipes, yes—30 grams is close enough to 1 ounce for casual cooking. However, for precise baking or comparing nutrition labels, use 28.35 grams.

What if a recipe shows weight in ounces but my scale only shows grams?

Multiply the ounces by 28.35 on this converter, then use the gram result on your scale. Many modern kitchen scales switch between oz and g automatically.

Sources & references

External references open in a new tab. We are independent and not affiliated with these organizations.

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Last updated: How we calculateReport a correctionDisclaimer

Provided “as is” for general information only — results may be inaccurate, so verify before you rely on them. No warranty; use at your own risk.

Built and reviewed by HIFreeTools against the formula shown above and any authoritative references cited on this page. See our methodology and editorial standards.

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