Ounce Into Grams Calculator
Ounce into grams calculator works out Converted value and Unrounded result from Value, Reading and Ruler divisions per inch. The default figures on this page give converted value of 28.349523; change any entry and the result, the working and the sources update together.
Your figures
Updates as you typeHow this is worked out
2 steps
- 1 oz = 28.349523125 g
- 1 x 28.349523125 = 28.34952313 g
Its 12 worked examples are re-run on every release, last on 15 September 2026. What changed
Sources and references
2 sources
What the ounce into grams calculator calculates
Converts a quantity between any two units of the same physical family using exact SI-derived factors.
How to use this ounce into grams calculator
Enter Value, Reading, Ruler divisions per inch and Feet. Converted value updates as you type. Change one figure at a time to see what drives the result.
How the result is worked out
Open “How this is worked out” beside the result for the step-by-step calculation behind Converted value, Unrounded result and Conversion.
The method follows NIST Special Publication 811, Guide for the Use of the International System of Units and BIPM, The International System of Units (SI Brochure).
What you can compare
Change one input at a time to see how it affects Converted value, Unrounded result and Conversion. The inputs you can vary are Value, Reading, Ruler divisions per inch, Feet, Inches and Significant figures.
Results are general information, not financial, tax, legal, medical or engineering advice. Check any decision that matters with a qualified professional.
See something wrong? Report a problem with this calculator
Frequently asked questions
What is 1 oz equal to grams?
Converts a quantity between any two units of the same physical family using exact SI-derived factors. On this page it is computed from Value, Reading and Ruler divisions per inch and shown as Converted value, Unrounded result and Conversion.
How many grams do I need to make 1 oz?
On the figures this page opens with — value 1 — the converted value is 28.349523. No single number fits everyone: change any figure above and the answer updates as you type, with each step of the arithmetic beside it.
Is 1 oz equal to 30 grams?
Converts a quantity between any two units of the same physical family using exact SI-derived factors. On the figures this page opens with — value 1 — the converted value is 28.349523. Put your own figures in their place and the working updates beside the result.
Is 2 grams 1 ounce?
It needs Value, Reading, Ruler divisions per inch, Feet, Inches and Significant figures. Nothing else is required, and the figures stay in your browser.
Does 1 ounce equal 30 grams?
The result gives Converted value, Unrounded result, Conversion, Reading, Multiply by and Reverse conversion, each labelled with its unit so the figure can be read on its own.
What information do I need for the ounce into grams calculator?
You need Value, Reading, Ruler divisions per inch, Feet, Inches and Significant figures. The page opens with default figures that give converted value of 28.349523, so you can see the scale before entering your own.