Instant Conversions

Mass Converter

Q: How many kilograms are in a pound (lb)?

1 pound (lb) is equivalent to 0.45359237 kilogram (kg).

Q: What is the difference between fluid ounce and mass ounce?

The mass ounce (oz) measures weight (28.35 g), while the fluid ounce (fl oz) measures volume. They are different units.

Q: When is the arroba (@) unit used?

The arroba (@) is a unit of mass used in agribusiness that is equivalent to 15 kilograms (kg).

Q: Can I convert tons to pounds?

Yes, the tool converts tons to pounds and all other available mass units automatically.

Quickly convert between kilograms, pounds, ounces, grams, and tons. Ideal for culinary recipes, weight management, logistics, and international trade.

Usage Scenarios

• Adapt international recipes to local units.
• Convert body weight between kilograms and pounds.
• Calculate transport and logistics loads.
• Make conversions in trade and industry.

Related Tools

For other conversions, see also:

Valor a converter*

Informe a massa na unidade selecionada. Aceitamos vírgula ou ponto para casas decimais.

Unidade de origem

Referências úteis

1 quilograma = 2,20462 libras (lb).
1 libra = 16 onças (oz) e equivale a aproximadamente 453,592 gramas.
1 arroba equivale a 15 kg e ainda é utilizada no agronegócio brasileiro.

Metric vs. Imperial System: Understand the Difference

The International System of Units (SI), or metric system, is the most used in the world and is based on units such as the kilogram (kg) and the gram (g). The imperial system (or avoirdupois) is common in countries such as the United States and the United Kingdom, using the pound (lb) and the ounce (oz). Our converter allows you to easily transition between these two worlds, in addition to including specific units such as the arroba.

Table of Essential Equivalents

Unit	Metric Equivalent	Imperial Equivalent
1 Kilogram (kg)	1.000 g	2,20462 lb
1 Pound (lb)	453,59 g	16 oz
1 Ton (t)	1.000 kg	2.204,62 lb
1 Arroba (@)	15 kg	33,069 lb

Frequently Asked Questions

Get your questions answered about mass unit conversion.

How many kilograms are in a pound (lb)?+

One pound (avoirdupois) is exactly equivalent to 0.45359237 kilograms. It is a common unit of mass in the United States and other countries that use the imperial system.

What is the difference between fluid ounce and mass ounce?+

This is a common question. The mass ounce (oz), used in this converter, measures weight and is equivalent to 28.35 grams. The fluid ounce (fl oz) measures volume and is not interchangeable with the mass ounce.

When is the arroba (@) unit used?+

The arroba is a traditional measure used in Brazilian agribusiness and in other Portuguese-speaking countries, mainly for weighing cattle and commodities such as cotton. One arroba corresponds to 15 kg.

Can I convert tons to pounds?+

Yes. Just enter the value in tons and the calculator will instantly show the equivalent in pounds, kilograms, ounces, and all other available units, making it easy to compare between measurement systems.