Convert Stones to Metric Tons

The Stone (symbol: st) is a unit of weight & mass. A British imperial unit of mass equal to exactly 14 pounds (= 6.35029318 kilograms per NIST SP 811). The stone is still the everyday unit for personal body weight in the United Kingdom and Ireland — colloquial usage routinely says 'I weigh 12 stone' rather than 168 pounds or 76 kilograms — and British bathroom scales typically display stones and pounds (e.g., '11 st 8 lb') as the primary scale alongside kilograms. Officially abolished from UK commerce in 1985 under the Weights and Measures Act amendments, the stone nonetheless remains cultural shorthand in British medical charts, GP consultations, fitness and weight-loss programs, and casual conversation about weight. Equine and livestock weights in Britain and Ireland are also still sometimes quoted in stones at agricultural auctions and equestrian weighing. Reference values: average UK adult male body weight ~12 st 5 lb (78 kg), average UK adult female ~11 st 2 lb (70 kg) per ONS Health Survey England. Convert stones to kg by multiplying by 6.350; to lb by multiplying by 14.

Stones are commonly used in cooking, shipping, fitness, and scientific research.

The Metric Ton (symbol: t) is a unit of weight & mass. A metric unit of mass equal to exactly 1,000 kg ≈ 2,204.62 lb. The metric ton — also called 'tonne' in international English (the official BIPM SI Brochure spelling) — is the global commodity unit for bulk shipping per IMO + ICAO, industrial manufacturing per ISO 9001 + ISO 14001 production reporting, agricultural yield (USDA WASDE reports global crop production in million metric tons: 2024 global wheat ~790 Mt, corn 1,200 Mt, soybeans 410 Mt, rice 530 Mt, palm oil 80 Mt; FAO reporting in Mt or kt), steel production (worldsteel.org global crude steel ~1,900 Mt/year, China ~1,020 Mt, India 140 Mt, Japan 87 Mt, USA 80 Mt), and CO₂ emissions reporting per IPCC AR6 + UNFCCC + Carbon Brief / Our World in Data (global anthropogenic 37 Gt CO₂/yr = 37,000 Mt; per-capita US ~16 t/yr, China 8.3 t, EU 6.5 t, India 1.9 t per 2023 data; airliner round-trip NYC-LON 1.6 t CO₂ per passenger). Reference values: a typical 40 ft shipping container max gross 30 t; loaded Class-8 semi-truck 36 t US (80,000 lb GVW); standard passenger car curb weight 1.0-2.5 t; Saturn V rocket fully fueled 2,970 t. Distinct from US short ton (2,000 lb = 907.18 kg) and UK long ton (2,240 lb = 1,016.05 kg).

Metric Tons are commonly used in cooking, shipping, fitness, and scientific research.