Convert Ounce (oz) (oz) to Tonne (t) (t)
Category: Mass
1 oz = 2.8E-05 t
High-precision rounding: 6 decimals
How to convert ounce (oz) to tonne (t)
We convert by pivoting through the SI base unit for Mass and applying exact factors where applicable.
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Examples
Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).
Common mistakes
- Confusing mass (lb) with force (lbf) in engineering contexts.
- Mixing metric tonnes (t) with short/long tons.
About Mass
Mass quantifies the amount of matter. The kilogram is defined by Planck’s constant, which anchors mass to fundamental physics. In practice, grams and pounds dominate everyday use—from recipes and parcels to body weight—while tonnes and long tons appear in logistics and industry.
About Ounce (oz)
Ounce (oz)
Equals 1/16 lb; exactly 28.349523125 g. Used for portions, postage, and precious metals (note: troy ounce differs).
History: Medieval trade used multiple ounces; today the avoirdupois ounce dominates in retail while troy ounce survives in bullion markets.
About Tonne (t)
Tonne (t)
Metric ton equals 1,000 kg. Used in logistics, emissions reporting (CO₂e), and industrial output. Works well with SI prefixes (kt, Mt).
History: Adopted with the metric system to simplify bulk trade; not to be confused with short ton (US) or long ton (UK).