Weight Converter

The Weight Converter switches between kilograms, grams, milligrams, metric tons, pounds, ounces, stones, and short/long tons in real time. Whether you're checking flight baggage limits, converting recipe measurements, weighing shipping freight, tracking fitness or nutrition, or cross-referencing US and Indian product specs, mass conversion comes up daily in an internationally connected world. The exact conversion factors: 1 pound = 453.59237 g (defined internationally in 1959), 1 ounce = 28.349523125 g, 1 stone = 14 lbs = 6.35029318 kg, 1 short ton (US) = 2,000 lbs = 907.185 kg, 1 long ton (UK) = 2,240 lbs = 1,016.047 kg, 1 metric ton = 1,000 kg. The tool preserves precision internally and rounds the display to a sensible number of decimals for practical use. Everyday conversions people run into: converting body weight from kilograms to pounds for US fitness apps (70 kg = 154.32 lb, a 200-lb bench press = 90.72 kg), grams to ounces for baking recipes (250 g flour = 8.82 oz), airline baggage allowances (23 kg check-in ≈ 50.7 lbs), and metric tons for shipping freight (a 20-foot container's typical payload is roughly 25 metric tons). Nutrition and supplements often mix units: 5,000 mg fish oil (5 g), 1 lb of chicken breast (453.6 g), a 350 g protein bar box (roughly 0.77 lbs). Weight vs mass — the tool converts mass, which is technically what all these units measure. "Weight" in scientific contexts is a force (mass × gravitational acceleration) and depends on where you are; on the moon your weight is one-sixth of your Earth weight, but your mass is unchanged. In everyday and commercial use, "weight" is used interchangeably with mass, which is fine for practical purposes since we all live on Earth. For fitness and nutrition specifically, precision matters more than most people think. A "cup" of flour varies from 120 g to 155 g depending on how packed it is; a "tablespoon" of butter is 14 g in the US but 15 g in the UK; medications sometimes use apothecaries' units (grains, drams) on older prescriptions. When accuracy counts, weight-based measurements beat volume-based every time. Everything runs entirely in your browser and works offline once loaded. Combine this converter with the Length Converter for full physical-quantity coverage, the Temperature Converter for climate math, and the Calorie Calculator when planning nutrition targets that mix metric and imperial food labels.