Ounces to Grams Converter - Free Online Tool

Convert ounces to grams instantly. 1 oz = 28.3495 grams. Fast, accurate weight conversion for cooking and weighing. No signup, works offline.

Quick Reference

Ounces	Grams
1 oz	28.35 g
2 oz	56.70 g
4 oz	113.40 g
8 oz	226.80 g
12 oz	340.19 g
16 oz	453.59 g

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Frequently Asked Questions

The conversion formula is: grams = ounces × 28.3495. This is based on the international avoirdupois ounce standard, where 1 oz precisely equals 28.349523125 grams.

Common use cases include following international recipes (many European recipes use grams), weighing ingredients for baking precision, converting nutritional information, weighing precious metals or jewelry, and understanding package weights on imported products.

Ounces are part of the imperial/US customary system developed from British units, while grams are part of the metric system created in France in 1795. Most of the world uses the metric system, but the US still primarily uses imperial units for everyday measurements.

Multiply ounces by 28.3495 for precise results. For quick mental math, multiply by 28 (close approximation). Example: 4 oz × 28 = 112g (actual: 113.4g). Baking often requires precision, so use the exact conversion when possible.

Fluid ounces (fl oz) measure volume for liquids, while weight ounces (oz) measure mass. They're completely different despite sharing the name. This converter uses weight ounces. For water, 1 fl oz ≈ 1 oz by weight, but this doesn't apply to other substances.

Yes. This converter uses the standard conversion factor (28.3495) which is accurate for all cooking needs. For baking, where precision matters, the result is reliable to several decimal places.

Quick reference: 1 oz = 28.35g, 2 oz = 56.7g, 4 oz = 113.4g, 8 oz = 226.8g, 12 oz = 340.2g, 16 oz (1 lb) = 453.6g. These are useful for recipe conversions.

Yes. All conversions happen in your browser using JavaScript. No data is sent to any server, and the tool works completely offline once the page is loaded. Your measurements remain private.

This tool converts one value at a time for simplicity and accuracy. Enter your value, get the result, copy it, then enter the next value. The instant calculation makes this process very fast.

Remember that 1 oz is approximately 28 grams (round to 30 for very rough estimates). So 4 oz is about 120g, 8 oz is about 240g. For precision work, use 28.35 or this converter.

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