This page converts non-negative avoirdupois mass only. It does not convert troy ounces, fluid ounces, ingredient volume, density, measurement uncertainty, or packaging tolerances.
This formula passed its registered engineering tests and is published under an explicit site-owner policy authorization. No independent expert, QA, editorial, legal, or third-party review is claimed. Verify consequential results with a qualified professional.
Convert ounces (oz) to grams (g), or reverse.
1 oz = 28.349523125 g
Use 8 oz.
8 × 28.349523125 = 226.796185.
8 oz = 226.796185 g.
| Avoirdupois ounces (oz) | Grams (g) |
|---|---|
| 0.25 oz | 7.08738078125 g |
| 0.5 oz | 14.1747615625 g |
| 1 oz | 28.349523125 g |
| 2 oz | 56.69904625 g |
| 3 oz | 85.048569375 g |
| 4 oz | 113.3980925 g |
| 5 oz | 141.747615625 g |
| 8 oz | 226.796185 g |
| 12 oz | 340.1942775 g |
| 16 oz | 453.59237 g |
| 32 oz | 907.18474 g |
Ounce-first metric record
This ounce-first workflow turns an avoirdupois reading from a scale or package into a metric record, with a visible multiplication trail and measurement-aware reporting.
Step-by-step guide · Ounce-first metric record
Start with 8 oz and retain the unit. A bare 8 does not reveal whether the value is mass, volume, or a count.
Multiply 8 by 28.349523125 grams per ounce. The unrounded arithmetic is 8 × 28.349523125 = 226.796185.
Write 8 oz = 226.796185 g. Keeping both sides of the equality makes the direction and unit identity reviewable later.
An ounce-first conversion often begins with a kitchen scale, a net-content statement, a component label, or a parcel record. Copy the reading exactly as shown and confirm that it is a mass value. This page uses the international avoirdupois ounce, the everyday ounce in the sixteen-ounce pound. It does not infer a different ounce from the product name or the visitor's location.
The qualifiers matter. A troy ounce is a different mass used in precious-metal contexts, and a fluid ounce measures volume. If the source reads fl oz, move to the fluid ounces to milliliters calculator and select its system. If a fluid volume must eventually become grams, the milliliters to grams calculator then requires a material density.
The complete line of arithmetic is short enough to preserve beside the converted value.
Start with 8 oz and retain the unit. A bare 8 does not reveal whether the value is mass, volume, or a count.
Multiply 8 by 28.349523125 grams per ounce. The unrounded arithmetic is 8 × 28.349523125 = 226.796185.
Write 8 oz = 226.796185 g. Keeping both sides of the equality makes the direction and unit identity reviewable later.
The international-ounce relationship is exact, but an entered measurement may not be. A scale display of 8.0 oz communicates less resolution than a calibrated record of 8.000 oz. The calculator can retain the mathematical quotient or product internally while the final reported digits remain appropriate to the source measurement and the purpose of the record.
This is why display precision is a final formatting choice rather than a change to the conversion factor. Do not round the factor to 28.35, multiply, and then round again. Preserve the full factor, calculate once, and choose a concise presentation. NIST's conversion and rounding guidance supports separating the converted numerical value from unsupported claims of measurement accuracy.
Once a metric mass has been established, use that unrounded result as the next page's source when another quantity is genuinely required.