Ounces to Kilograms (oz to kg) Converter – 8, 16, 24, 32, 64 oz in kg

Convert ounces to kilograms and kilograms to ounces instantly.
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Ounces to Kilograms (oz to kg) – Instant Calculator

Ounces (oz)

Kilograms (kg)

Common Conversion Examples

8 oz = 0.226796 kg

8 oz = 0.226796 kg

12 oz = 0.340194 kg

12 oz = 0.340194 kg

16 oz = 0.453592 kg

16 oz = 0.453592 kg

24 oz = 0.680388 kg

24 oz = 0.680388 kg

32 oz = 0.907184 kg

32 oz = 0.907184 kg

64 oz = 1.81437 kg

64 oz = 1.81437 kg

Ounces to Kilograms: Definition, History, Uses, and Examples

Definition

An ounce (oz) in the everyday avoirdupois system equals 28.349523125 grams. A kilogram (kg) is the SI base unit of mass used globally in science, trade, and regulations. The ounces to kilograms formula is:

Kilograms (kg) = Ounces (oz) × 0.028349523125

Origin or History

The modern avoirdupois ounce developed in English-speaking countries for everyday goods. The metric kilogram originates from the French Revolution and is part of the International System of Units (SI), now the global standard for scientific and commercial measurements.

Note: Precious metals often use the troy ounce (31.1034768 g). This calculator uses the standard avoirdupois ounce for recipes, parcels, and everyday items.

Current Use

  • Shipping & postage: convert oz to kg for customs and courier forms.
  • Cooking & food labels: switch ounces to kilograms for metric recipes and packs.
  • Retail & e‑commerce: list products in both oz and kg for international buyers.
  • Science & education: use SI units (kg) while interpreting ounce-based sources.

Examples

Ounces (oz)Kilograms (kg)Example Use
8 oz0.226796 kgSmall parcel; beverage can pack
16 oz0.453592 kgOne pound equivalent
24 oz0.680388 kgFood packs, deli items
32 oz0.907184 kgLarge grocery items; shipping bracket
64 oz1.81437 kgBulk foods; warehouse packs

Step-by-step example

Convert 24 ounces to kilograms: 24 × 0.028349523125 = 0.6803886 kg (≈ 0.680388 kg).

Frequently Asked Questions

How many kilograms are in 1 ounce?
1 oz = 0.028349523125 kg.
Is 16 ounces exactly 0.453592 kilograms?
Yes, 16 oz × 0.028349523125 = 0.453592 kg.
Do recipes use ounces or kilograms?
US recipes often use ounces, while metric recipes use grams/kilograms. This tool converts between them instantly.
Is this converter suitable for postage and customs?
Yes. Many carriers label small parcels in ounces, while customs forms require kilograms.