Weight Calculator
Convert between weight and mass units instantly
// Quick Reference
1 kg = 2.205 lb. 1 lb = 16 oz. 1 stone = 14 lb = 6.35 kg. 1 metric ton = 1000 kg. 1 US ton = 2000 lb. 1 UK ton = 2240 lb.
// Mass vs Weight
Mass (kg) is constant everywhere. Weight (N) changes with gravity. On the Moon you'd weigh 1/6th of Earth weight, but your mass stays the same.
// Common Uses
Cooking: grams/ounces. Body weight: kg/lb/stones. Shipping: kg/metric tons. Precious metals: troy ounces (31.1g vs 28.35g standard).
// How to Use Online Weight Calculator
- Enter or paste your source data into the tool input.
- Click the primary action button to run Online Weight Calculator.
- Review the output, then copy or export your result.
// FAQ: What does Online Weight Calculator do?
Online Weight Calculator helps you convert between weight and mass units instantly in your browser with instant results.
// FAQ: How do I use Online Weight Calculator?
Paste or type your input, choose the needed action, and copy the generated output when the result is ready.
// FAQ: Is my data safe when using Online Weight Calculator?
Yes. Processing runs in your browser session for this page, so your content is not uploaded by this tool workflow.
// FAQ: Can I use Online Weight Calculator on mobile devices?
Yes. Online Weight Calculator works on modern mobile browsers, so you can run it from phones and tablets.