ConvBolt — Unit ConverterOunces to Grams Converter
Converting ounces to grams is a multiplication by a fixed factor: 1 oz = 28.34952 g. The table below covers the values people look up most often, and the formula section shows exactly where that factor comes from.
Because one ounce works out to 28.34952 g, the gram is the noticeably larger unit of the two: a figure given in gram always carries a larger number than the same measurement in ounce. A chart drawn in oz can hide that, so check which label the axis uses before you compare two readings.
Where a legal or postal limit is set in grams, the same limit expressed in ounces has to be exact — an overshoot of even one unit can change the chargeable band.
The conversion factor used here is 28.34952 g per ounce (5 significant digits as shown). Kept to seven figures it covers professional measurement; if you round it to two or three decimals for a spreadsheet, the error scales with the input — at a value of 1,000 oz a factor rounded to three decimals can be off by a measurable amount. The reverse direction uses 0.03527396 oz per g, the exact reciprocal, so a round trip through both pages returns your original number.
Ounces to Grams formula
Use this formula to convert any ounce value to grams:
Worked example: 100 oz × 28.34952 = 2834.952 g.
Ounces to Grams conversion table
| Ounces (oz) | Grams (g) |
|---|---|
| 0.5 oz | 14.17476 g |
| 1 oz | 28.34952 g |
| 2 oz | 56.69905 g |
| 5 oz | 141.7476 g |
| 10 oz | 283.4952 g |
| 20 oz | 566.9905 g |
| 50 oz | 1417.476 g |
| 100 oz | 2834.952 g |
| 500 oz | 14174.76 g |
| 1000 oz | 28349.52 g |
How to convert ounces to grams
Multiply the ounce value by 28.34952 to get the equivalent in grams. This single factor works for every value in the table above and for anything else you need — there is no per-value adjustment, which is why a conversion table and a calculator always agree.
If you need the opposite direction, use the Grams to Ounces converter instead of dividing by hand; both pages use the same source factors. For every other oz conversion in one place, see the oz conversion hub.
Frequently asked questions
How many grams are in 1 ounce?
1 ounce = 28.34952 g.
What is 100 ounces in grams?
100 oz = 2834.952 g.
Is converting ounces to grams the same as grams to ounces?
No — the direction changes the multiplier. The reverse conversion (1 g = 0.03527396 oz) is on the Grams to Ounces page.
Related conversions
Try the ConvBolt Unit Converter for any other weight unit, browse the Weight conversions, or read our conversion guides.