Ounces to grams converter
Convertersconversion pair
Convert ounces to grams instantly: 1 ounce is exactly 28.3495 g. Baking- scale precision, every other unit still on screen, and one-click copying.
One ounce is 28.3495 g — the number printed on every import label nobody reads.
work surface
Math, not advice — results are indicative. Read the disclaimer.
pro tips
Mental math: multiply by 28 — you land within half a gram per ounce.
Butter wrappers print it for you: one US stick is 4 oz = 113 g.
A classic coffee bag was 12 oz = 340 g — same beans, new label on the metric shelf.
what it does
One ounce is exactly 28.349523125 grams — a number with more decimals than most recipes have ingredients, and one of the few conversions with an exact definition behind it. Multiply ounces by 28.35 and the grams arrive ready for a kitchen scale.
Where it shows up: coffee bags that quietly went metric, deli counters, yarn and fabric sold by weight, packages from abroad whose labels assume you think in grams, and any recipe crossing the Atlantic in either direction.
The rough version: multiply by 28, or by 30 if you're feeling generous — then subtract a pinch of guilt about precision. Eight ounces becomes "about 225 or so" when the honest answer is 226.8. For cooking, both are dinner.
Type any number and the widget answers in grams instantly, with the math written in the hint. Click the result to copy it, and hit swap when the recipe changes direction — the grams-to-ounces version is always one click away.
quick answers
How many grams is one ounce?
Exactly 28.349523125 grams. Since 1959 the avoirdupois ounce has been defined through the kilogram, which is why this page can promise decimals without blushing.
Is 100 g the same as 3.5 oz?
Almost — it's 3.53 oz. For seasoning, identical; for baking, the extra 0.03 is why your bread sometimes holds a grudge.
Is a troy ounce the same as a regular ounce?
No — troy ounces (gold, silver) weigh 31.1 g, about 10% more. This page converts everyday avoirdupois ounces; your jewelry deserves a specialist.
Who still uses ounces?
The US officially, the UK informally — mostly for food, post and bodyweight nostalgia. Everywhere else, grams won the shelf war decades ago.