Conversion lab / mass

Ounces to Grams Converter

Convert avoirdupois ounces to grams with a precise international factor.

Ounces to Grams Converter: 1 avoirdupois ounce = 28.34952313 grams. To convert any amount, multiply the number of avoirdupois ounces by 28.34952313. TOEA calculates with the full stored factor (oz × 28.349523125 = g) and keeps the calculation in your browser. Runs 100% locally in your browser with zero server file uploads.

Runs
In your browser
Cost
Free · no sign-up
Availability
Ready to use
TOEA / CONVERSION ENGINE 01Browser only
Input / mass
oz

Decimals, zero, and negative values are supported.

Reverse direction
Result / live

28.34952313

ggrams
Working formula

oz × 28.349523125 = g

One avoirdupois ounce equals 28.349523125 grams.
Common values
1 oz28.34952313 g
2 oz56.69904625 g
4 oz113.3980925 g
8 oz226.796185 g
16 oz453.59237 g

Avoirdupois ounces to grams conversion table

avoirdupois ounces (oz)grams (g)
1 oz28.34952 g
2 oz56.69905 g
3 oz85.04857 g
4 oz113.3981 g
5 oz141.7476 g
6 oz170.0971 g
7 oz198.4467 g
8 oz226.7962 g
9 oz255.1457 g
10 oz283.4952 g
15 oz425.2428 g
avoirdupois ounces (oz)grams (g)
16 oz453.5924 g
20 oz566.9905 g
25 oz708.7381 g
30 oz850.4857 g
40 oz1,133.981 g
50 oz1,417.476 g
75 oz2,126.214 g
100 oz2,834.952 g
250 oz7,087.381 g
500 oz14,174.76 g
1,000 oz28,349.52 g

Rounded to seven significant digits; the converter above uses the full factor.

Worked examples

Multiply the number of avoirdupois ounces by 28.349523125:

  • 2 oz × 28.349523125 = 56.69905 g
  • 4 oz × 28.349523125 = 113.3981 g
  • 8 oz × 28.349523125 = 226.7962 g

How to use it

  1. Enter the number of avoirdupois ounces you want to convert.
  2. Read the grams result as it updates.
  3. Copy the result or open the reverse conversion.

Privacy & limitations

Your value never leaves this browser. JavaScript floating-point arithmetic can round the last displayed digit for very large or highly precise values; do not use this general utility where regulated measurement traceability is required.

Related tools

Frequently asked questions

What formula converts avoirdupois ounces to grams?

oz × 28.349523125 = g. The result is displayed with up to 8 decimal places without changing the underlying calculation.

How many grams is 16 oz?

16 oz = 453.5924 g. Multiply 16 by 28.34952313 to get it, or find it in the conversion table.

How do I convert grams back to avoirdupois ounces?

Divide by 28.34952313, or open the reverse converter, which uses the exact reciprocal of the same factor.

Can I enter zero, decimals, or negative values?

Yes. The engine handles finite positive, zero, decimal, and negative numbers. Whether a negative measurement is meaningful depends on your use case.

Is this conversion performed online?

The page is online, but the number you type is converted locally in your browser and is not sent to TOEA.

Embed this tool

Free to use on any website. Paste the code where the tool should appear; the link under it lets readers open the full page.

<iframe src="https://toea.com/embed/ounces-to-grams" title="Ounces to Grams Converter" width="100%" height="500" style="border:0;max-width:680px" loading="lazy"></iframe>
<p style="margin:4px 0 16px;font-size:13px"><a href="https://toea.com/ounces-to-grams">Ounces to Grams Converter</a> &middot; TOEA</p>
<script>addEventListener("message",function(e){if(e.origin!=="https://toea.com"||!e.data||e.data.type!=="toea-embed-height")return;document.querySelectorAll("iframe").forEach(function(f){if(f.contentWindow===e.source)f.style.height=e.data.height+"px"})})</script>

Free tool · runs in your browser · no account required