Ounces to Grams (oz to g)

Common questions

How many grams are in an ounce?

One avoirdupois ounce is exactly 28.349523125 g: it is one sixteenth of the international avoirdupois pound, exactly 0.45359237 kg. This factor fits the twelve-significant-digit display. Rounding it to 28.35 g or 28 g changes the quantity; choose a rounding rule from the requirements of your own task. Copy result copies the displayed headline without digit-grouping commas; each visible conversion row has its own Copy button. Displayed and copied values round to twelve significant digits. If native copying fails, a complete selectable summary identifies the input, selected pair and conventions and includes every unit in the category, including uncommon units.

What are 4, 8, 12 and 16 oz in grams?

4 oz is 113.3980925 g, 8 oz is 226.796185 g, 12 oz is 340.1942775 g and 16 oz is 453.59237 g. Sixteen ounces is one pound, which is why that last figure is the pound definition, 0.45359237 kg, written in grams. Type any of them into the field and the answer appears without a button press.

Is an ounce the same as a fluid ounce?

An avoirdupois ounce measures mass, while a fluid ounce measures volume. Under Volume, one US fluid ounce is exactly 29.5735295625 mL and one imperial fluid ounce exactly 28.4130625 mL. Converting volume to mass requires a supplied density applicable to the material and conditions: mass = volume × density, in matching units. Unit Converter does no density conversion. Grams to Cups uses named ingredient density conventions rather than an arbitrary user-entered density.

What about a troy ounce of gold or silver?

One troy ounce is exactly 31.1034768 g, about 9.7% heavier than an avoirdupois ounce. Troy ounce is absent from this converter. Confirm the explicit unit in your source; a metal or product name does not establish it. For a supplied troy-oz quantity, multiply separately by 31.1034768 to obtain grams, then enter that gram quantity with Gram selected.

How do I convert grams back to ounces?

Swap units reverses the pair, or use ounces = grams / 28.349523125. The exact divisor differs from a rounded reciprocal: 100 g displays as 3.52739619496 oz and 500 g as 17.6369809748 oz. Re-entering a rounded ounce display uses that new finite decimal; it does not recover the original exact quantity, even when the next rounded display happens to match.

Why does it show pounds and kilograms too?

Because an ounce is usually being compared with something. Under the answer the same weight is listed in milligrams, grams, kilograms, tonnes, pounds, stones and US short tons, each with its own Copy button, and one switch adds the three rarer ones: long tons, carats and grains.

Does anything I type leave my browser?

Your input and converted values are calculated in the browser and are not uploaded by the converter. The definitions arrive with the page, so conversion needs no external data lookup and keeps working offline after the page has loaded. The core conversion needs no account. This focused page opens on Ounce (oz) to Gram (g), while preserving the main converter’s saved unit pair. When storage is usable, a saved value and uncommon-unit preference can travel between pages. Its suffix must still match From. Valid deliberate scalar edits can save those fields after a short delay; invalid or incomplete drafts preserve the saved record. Unusable or conflicting records remain until you use Forget saved settings, which keeps the current conversion on screen. Copy result copies the displayed headline without digit-grouping commas; each visible conversion row has its own Copy button. Displayed and copied values round to twelve significant digits. If native copying fails, a complete selectable summary identifies the input, selected pair and conventions and includes every unit in the category, including uncommon units.