Converters

Weight / Mass Converter

Convert between Kilograms, Pounds, Ounces, Grams, and Stones instantly.

Use Weight / Mass Converter to get instant results without uploads or sign-ups. Everything runs securely in your browser for fast, reliable output.

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About this tool

Convert seamlessly between Metric (kg, g) and Imperial/US (lb, oz) mass units. Useful for cooking, shipping, and gym weights. This tool provides accurate conversions for weight and mass measurements across different unit systems, helping you work with recipes, fitness tracking, and scientific calculations.

Usage examples

Gym Weight

20kg plate

20 kg = 44.09 lbs

Cooking

1lb flour

1 lb = 453.59 g

How to use

  1. Enter the weight value.
  2. Select the units.
  3. Click "Run Tool" (or auto-updates).

Benefits

  • All common units supported
  • High precision calculations
  • Instant conversions for cooking, fitness, and travel

FAQs

What is the difference between mass and weight?

Mass is the amount of matter in an object (measured in kg or g), which stays constant everywhere. Weight is the force of gravity on that mass (measured in newtons), which varies based on location. On Earth, we commonly use these terms interchangeably, but technically, a 70kg person has that mass everywhere but weighs less on the Moon due to lower gravity. This tool converts mass units, which people commonly call "weight".

Is Mass same as Weight?

Technically no (Mass is matter, Weight is gravity pull), but on Earth they are used interchangeably in daily life.

How do I convert pounds to kilograms?

Divide pounds by 2.20462 to get kilograms. For example, 150 lbs ÷ 2.20462 = 68.04 kg. Use this tool for instant accurate conversions.

What is a stone in weight?

A stone is a British unit equal to 14 pounds or approximately 6.35 kilograms. It's commonly used in the UK and Ireland for measuring body weight.

How many grams are in an ounce?

One ounce (oz) equals approximately 28.35 grams. This conversion is commonly used in cooking and food measurements.

How do I convert kilograms to pounds?

Multiply kilograms by 2.20462 to get pounds. For example, 70 kg × 2.20462 = 154.32 lbs. This conversion is essential for international travel, fitness tracking, and shipping calculations.

What units are used in different countries?

Most countries use the metric system (kg, g). The US primarily uses imperial units (lb, oz). The UK uses a mix - stone and pounds for body weight, but kilograms for most other applications. Canada and Australia officially use metric but some people still reference pounds.

How many ounces are in a pound?

There are 16 ounces in 1 pound. This is commonly used in cooking, postal services, and everyday measurements in the US.

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