Ounces to Grams: Kitchen Conversion Guide

If you have ever tried to follow a recipe from a British baking blog while your kitchen scale reads in ounces, or vice versa, you know how important it is to convert between ounces and grams accurately. The difference between a perfectly risen loaf and a dense brick can come down to a few grams. This guide gives you everything you need to convert ounces to grams with confidence.

The Ounces to Grams Formula

One avoirdupois ounce (the standard ounce used in cooking) equals exactly 28.3495 grams. The formula is:

Grams = Ounces × 28.3495

For a quick estimate, multiply ounces by 28. So 4 oz × 28 = 112 grams (actual: 113.4 g). Close enough for most kitchen tasks.

Common Kitchen Conversions

• 1 oz = 28.35 g
• 2 oz = 56.70 g
• 4 oz = 113.40 g (quarter pound)
• 6 oz = 170.10 g
• 8 oz = 226.80 g (half pound)
• 12 oz = 340.19 g
• 16 oz = 453.59 g (one pound)

Why Accurate Conversions Matter in Cooking

Baking Precision: Baking is a science. Flour, sugar, butter, and leavening agents must be measured accurately for consistent results. A recipe calling for 200 grams of flour is asking for a specific amount, and guessing with cups or rough ounce estimates leads to unreliable outcomes.

International Recipes: The internet has made global cuisine accessible to everyone. European, Australian, and Asian recipes typically use grams, while American recipes lean on ounces and cups. Being able to convert between systems opens up a world of culinary possibilities.

Nutritional Tracking: Food labels and nutrition databases may list serving sizes in grams or ounces depending on the region. Accurate conversion helps you log your intake correctly when tracking calories or macronutrients.

Portion Control: When a recipe says "6 ounces of chicken breast," knowing that equals about 170 grams helps you weigh it correctly on a metric scale.

Troy Ounces vs Avoirdupois Ounces

A quick note: there are different types of ounces. The one used in cooking is the avoirdupois ounce (28.35 g). The troy ounce (31.10 g) is used for precious metals like gold and silver. Unless you are weighing jewelry or bullion, the avoirdupois ounce is the one you want.

Tips for Kitchen Conversions

• Invest in a digital scale that toggles between ounces and grams. It is the single best upgrade you can make for cooking accuracy.
• Print a conversion chart and stick it on your refrigerator for quick reference while cooking.
• Use an online tool when precision matters. Our Unit Converter handles ounces, grams, pounds, kilograms, and more.

You might also find our guides on cups to milliliters and kilograms to pounds helpful for your kitchen conversions.

Convert Any Measurement Instantly

Our free Unit Converter supports weight, volume, length, temperature, and dozens of other unit types. Enter your value, choose your units, and get a precise result in a fraction of a second. No signup, no app download, works on any device.