Weight Converter

Convert kilograms, grams, pounds, ounces, stones, and tons with clear unit results.

Common Conversions

Metric

  • 1 metric ton = 1,000 kg
  • 1 kg = 1,000 g
  • 1 g = 1,000 mg

Imperial

  • 1 US ton = 2,000 lb
  • 1 stone = 14 lb
  • 1 lb = 16 oz

Metric ↔ Imperial

  • 1 kg ≈ 2.205 lb
  • 1 lb ≈ 453.6 g
  • 1 oz ≈ 28.35 g

Convert common weight and mass units for recipes, shipping, fitness, school work, and product listings. Enter one value and compare kilograms, grams, pounds, ounces, stones, and tons without uploading data or installing an app.

What is a weight converter?

A weight converter changes a value from one unit system to another. It is commonly used for metric and imperial conversions, including kg to lb, lb to kg, grams to ounces, and stones to kilograms.

When to use a weight converter

Shipping and ecommerce

Convert package weights for labels, marketplaces, and courier limits.

Cooking and nutrition

Switch between grams, ounces, pounds, and kilograms for recipes and food tracking.

Fitness and health notes

Compare body weight or equipment weights across kg, lb, and stone.

School and engineering basics

Check unit conversions while studying measurement systems.

How unit conversion works

The converter applies fixed conversion factors between supported units and rounds the displayed result for readability. For scientific or legal metrology, use the precision and unit definitions required by your standard.

Common weight units

Kilogram and gramMetric countries, science, shippingMost international systems use metric units.
Pound and ounceUS recipes, packages, fitnessCommon in US consumer contexts.
StoneUK and Ireland body weightOften used informally for people, not packages.

Local conversion in the browser

Calculations run instantly in the browser. No values are sent to a server, which is useful for private shipping costs, inventory notes, or personal measurements.

Frequently Asked Questions

How many pounds are in one kilogram?
One kilogram is about 2.20462 pounds.
How many ounces are in one pound?
One avoirdupois pound contains 16 ounces.
Is weight the same as mass?
In everyday conversion tools the terms are often used together, but technically mass and force are different physical quantities.

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