Weight & Mass Converter
Convert between kilograms, pounds, grams, ounces, tons, and other weight units.
Overview
This converter handles weight and mass unit translation across metric (grams, kilograms, tonnes), imperial (ounces, pounds, stones), and scientific (milligrams, micrograms) units. It is frequently needed in nutrition labelling, international shipping, luggage weight checks, chemistry, and fitness tracking.
Common use cases
- Convert airline luggage allowances between kilograms and pounds.
- Translate recipe ingredient quantities between grams and ounces.
- Convert body weight for international health forms.
- Compute shipping parcel weights for freight cost estimation.
Examples and notes
- 23 kg is approximately 50.7 pounds — the common economy luggage allowance.
- One pound equals 453.6 grams — important for US recipe conversions.
- A 100 g protein bar contains about 3.53 ounces of product.
Important note
This tool converts units of mass. Weight technically depends on gravity and differs in physics from mass, though in everyday use the terms are used interchangeably. For scientific applications, confirm whether mass or force (Newtons) is required.
Frequently Asked Questions
How many pounds are in a kilogram?
1 kilogram = 2.20462 pounds. To convert kg to lbs, multiply by 2.20462.
How many grams are in an ounce?
1 ounce = 28.3495 grams. To convert ounces to grams, multiply by 28.3495.
What is a stone and where is it used?
A stone equals 14 pounds (6.35 kg). It is used primarily in the United Kingdom and Ireland to measure body weight.
How do I convert my body weight from kg to pounds?
Multiply your weight in kg by 2.20462. For example, 70 kg × 2.20462 = 154.3 lbs.