Convert Weight (Mass)

Enter the numeric value you want to convert between weight or mass units.

Table of Contents

• Introduction
• What are Weight and Mass?
• Formulas
• Examples
• Frequently Asked Questions

Introduction

With our calculator, you can quickly and easily find out how much something weighs in any unit of measurement, making it the perfect tool for a wide range of applications. Whether you are measuring ingredients for a recipe, calculating the weight of a shipment, or conducting research, our calculator is here to help you get the information you need. So if you want to convert kilograms to pounds or ounces to grams, our weight conversion calculator is the tool for you.

What are Weight and Mass?

Weight and mass are two commonly used terms in physics and engineering that are often used interchangeably, but they are not exactly the same.

Weight is a measure of the force exerted on an object due to gravity. It is measured in units of force such as newtons (N) or pounds (lb). The weight of an object is equal to its mass multiplied by the acceleration due to gravity. On Earth, the acceleration due to gravity is approximately 9.8 m/s², which means that an object with a mass of 1 kg weighs around 9.8 N or 2.205 lb.

On the other hand, mass is a measure of the amount of matter in an object. It is measured in units of mass such as kilograms (kg) or grams (g). Mass is a scalar quantity, which means it only has magnitude and no direction.

It is important to note that weight is affected by the gravitational force of the planet or celestial body, for example, on the Moon, an object with a mass of 1 kg weighs around 1.62 N or 0.357 lb. Therefore, weight can vary depending on the location of the object in the universe. However, mass is constant and does not change with location.

In practice, the weight of an object is most commonly used in everyday life and in most applications, such as cooking, shipping packages, and many others. However, in scientific and engineering applications, mass is often used as the fundamental unit of measurement.

Formulas

• Kilograms to grams: 1 kilogram (kg) equals 1000 grams (g).
• Grams to kilograms: 1 gram (g) equals 0.001 kilograms (kg).
• Pounds to ounces: 1 pound (lb) equals 16 ounces (oz).
• Ounces to pounds: 1 ounce (oz) equals 0.0625 pounds (lb).
• Metric tons to kilograms: 1 metric ton (t) equals 1000 kilograms (kg).
• Kilograms to metric tons: 1 kilogram (kg) equals 0.001 metric tons (t).
• Milligrams to grams: 1 milligram (mg) equals 0.001 grams (g).
• Grams to milligrams: 1 gram (g) equals 1000 milligrams (mg).
• Micrograms to grams: 1 microgram (µg) equals 0.000001 grams (g).
• Grams to micrograms: 1 gram (g) equals 1,000,000 micrograms (µg).
• Stones to pounds: 1 stone (st) equals 14 pounds (lb).
• Pounds to stones: 1 pound (lb) equals 0.07143 stones (st).
• Short tons to pounds: 1 short ton (US) equals 2000 pounds (lb).
• Pounds to short tons: 1 pound (lb) equals 0.0005 short tons (US).

Examples

• How many grams are in 5 kilograms?
  To convert kilograms to grams, use the conversion formula 1 kg = 1000 g.
  So: 5 kg × 1000 = 5000 grams.
• How many pounds are in 32 ounces?
  Using the formula 1 oz = 0.0625 lb, we convert:
  32 oz × 0.0625 = 2 pounds.
• How many metric tons are in 5000 kilograms?
  With the formula 1 kg = 0.001 t:
  5000 kg × 0.001 = 5 metric tons.
• How many micrograms are in 0.5 grams?
  Using 1 g = 1,000,000 µg, we calculate:
  0.5 g × 1,000,000 = 500,000 micrograms.
• How many stones are in 175 pounds?
  Using the formula 1 lb = 0.07142857 st:
  175 lb × 0.07142857 = 12.5 stones.
• How many short tons are in 4000 pounds?
  With the conversion 1 lb = 0.0005 short ton:
  4000 lb × 0.0005 = 2 short tons.

Frequently Asked Questions

What is the difference between weight and mass?

Mass is a physical property that indicates the amount of matter in an object and is measured in kilograms (kg), grams (g), etc. Weight, on the other hand, is the force with which gravity acts on that mass, and it is measured in newtons (N).

Why is it important to convert weight and mass units?

Conversions allow data to be used consistently across scientific, commercial, or educational contexts. For example, some recipes use grams, while others use ounces or pounds.

Are weight and mass units the same in every country?

No. Some countries use the metric system (kilograms, grams), while others like the United States use the imperial system (pounds, ounces).

What is the base unit of mass in the International System of Units (SI)?

The base unit of mass in the SI is the kilogram (kg).

What does a ton mean?

A ton can refer to different measurements depending on the country. The metric ton equals 1000 kilograms, while in the U.S. the short ton (907.18474 kg) is used, and in the UK the long ton (1016.04691 kg) is common.

What is a stone and where is it used?

The stone (st) is a unit of mass equal to 14 pounds and is mainly used in the United Kingdom to express body weight.