How many grams are in a ounces?

There are 28.3495 grams in one ounces.

How do I convert oz to g?

To convert ounces to grams, multiply the ounces value by 28.3495.

Ounces is a common unit used in measurements and conversions. Convertaro provides instant conversion to grams and more.

Weight Converter

ounces to grams Converter

ounces to grams converter

Convert ounces to grams instantly using the exact 1 ounce = 28.349523125 gram factor. Useful for recipes, nutrition labels, retail weights, and package measurements.

Most searches here are for recipes, food packages, supplements, and parcel weights that start in ounces and need a metric gram value.

Also useful: convert grams to ounces, Grams To Ounces, Ounces To Pounds.

Ounces To Grams Converter

From ounces

ounces

To grams

28.349523

grams

Calculation: g = oz x 28.349523125

Conversion Formula

g = oz x 28.349523125

Take the value in ounces, multiply it by 28.349523, and the result is the same amount in grams.

This works because each oz equals 28.349523 g. Keep extra decimals if you need higher precision.

Reverse

oz = g x 0.0352739619

To go the other way, use the reverse formula so the unit relationship stays exact.

How to Convert

1Start with the ounces valueEnter the amount you already have in oz. Double-check the source unit first so you are converting the right number.
2Apply the ounces to grams formulaUse g = oz x 28.349523125 or let the converter calculate it instantly. This gives you the equivalent value in g.
3Round for your use caseUse more decimals for science, billing, or engineering. For everyday use, round only after the full conversion is done.

All Weight tools

ounces → grams Table

Common reference values

Quick reference values for common ounces to grams conversions.
ounces	grams
ounces1	grams28.349523 grams
ounces2	grams56.699046 grams
ounces4	grams113.398093 grams
ounces8	grams226.796185 grams
ounces12	grams340.194277 grams
ounces16	grams453.59237 grams
ounces32	grams907.18474 grams
ounces64	grams1814.36948 grams

Frequently Asked Questions

QHow many grams in 1 ounce?

There are 28.349523125 grams in 1 ounce. For most recipe and label use, this is rounded to 28.35 grams.

QWhat is 8 ounces in grams?

8 ounces equals 226.8 grams. Multiply 8 by 28.349523125 to get 226.796185 grams, which rounds to 226.8 g.

QWhat is 16 ounces in grams?

16 ounces equals 453.59 grams. Multiply 16 by 28.349523125 to get 453.59237 grams, which is exactly 1 pound in metric form.

QWhy convert ounces to grams in cooking?

Metric recipes often use grams for better precision, while many US labels and ingredient lists use ounces. Converting keeps recipe measurements consistent.

QHow do I convert grams back into ounces?

For the reverse direction, use the Grams To Ounces Converter page.

Understanding the units

What is oz?

ounces are used in weight calculations and technical references.

What is g?

grams are used in weight calculations and technical references.

Where this conversion shows up

Ounces To Grams Converter often comes up in body weight tracking and health forms, shipping and parcel weight labels, and recipe and nutritional ingredient measurements. It is most useful when the source value is published in one unit but the person reading it expects another.

If you are comparing nearby units, browse the full weight converters collection for the closest match instead of doing extra manual steps.

A common next step is to compare this result with Grams To Ounces or switch direction with Grams To Ounces.

Real-world examples

Body weight and fitness goals

1 oz -> 28.349523125 g

Common when a gym tracker, health app, or doctor's scale shows weight in a different unit than your usual reference.

Shipping, luggage, and parcels

2 oz -> 56.69904625 g

Helpful for airline baggage limits, international shipping labels, and postal service weight requirements.

Cooking, recipes, and nutrition

4 oz -> 113.3980925 g

Useful when ingredient amounts, supplement serving sizes, or food packaging show grams, ounces, and pounds in the same document.

Quick reference and common mistakes

Use the quick table for fast lookups and the formula when accuracy matters. Keep more decimals during intermediate steps, then round only for the final number you plan to show or report.

Rounding too early and carrying an inaccurate value to the next step.
Mixing ounces and grams values in the same equation without converting first.
Copying values from references that use different unit standards.

Why this conversion matters

Converting ounces to grams accurately prevents communication errors between teams, tools, and regions that use different standards. If you need the opposite direction, use the Grams To Ounces Converter.

If you are staying in the same workflow, continue with Grams To Ounces, Ounces To Pounds, Pounds To Grams.