Convert between metric and imperial weight units with precision. Get instant results for kilograms, pounds, ounces, grams, tons, and more.
The metric system uses grams and kilograms as the base units for weight. It's a decimal system that makes conversions easy.
The imperial system uses pounds and ounces as primary weight units, still commonly used in the United States.
A weight converter is a tool that lets you quickly convert between different units of weight and mass. This includes metric units like grams, kilograms, and metric tons, as well as imperial units like ounces, pounds, and tons. Whether you need to convert kg to pounds, ounces to grams, or tons to kilograms, this guide explains how to do it with exact formulas and practical examples.
Weight conversion means changing a measurement from one unit of weight to another. There are two main systems used worldwide:
Metric system – uses milligrams (mg), grams (g), kilograms (kg), and metric tons (t).
Imperial/US customary system – uses ounces (oz), pounds (lbs), stones (st), and tons.
A weight converter calculator does the math instantly and accurately. However, understanding the conversion formulas helps you verify results and understand how different weight units relate to each other.
Formula: pounds = kilograms × 2.20462
Example: 75 kg × 2.20462 = 165.35 pounds
1 kilogram equals 2.20462 pounds.
Formula: kilograms = pounds ÷ 2.20462
Example: 150 pounds ÷ 2.20462 = 68.04 kg
Formula: ounces = grams ÷ 28.3495
Example: 250 grams ÷ 28.3495 = 8.82 ounces
Formula: grams = ounces × 28.3495
Example: 10 ounces × 28.3495 = 283.5 grams
Formula: ounces = pounds × 16
Example: 3 pounds × 16 = 48 ounces
1 pound equals exactly 16 ounces.
Formula: pounds = ounces ÷ 16
Example: 32 ounces ÷ 16 = 2 pounds
Formula: grams = kilograms × 1000
Example: 2.5 kg × 1000 = 2500 grams
Formula: kilograms = grams ÷ 1000
Example: 3500 grams ÷ 1000 = 3.5 kg
Formula: pounds = metric tons × 2204.62
Example: 2 metric tons × 2204.62 = 4409.24 pounds
Formula: metric tons = pounds ÷ 2204.62
Example: 5000 pounds ÷ 2204.62 = 2.27 metric tons
Formula: pounds = short tons × 2000
Example: 1.5 short tons × 2000 = 3000 pounds
1 US short ton equals 2000 pounds exactly.
Formula: ounces = kilograms × 35.274
Example: 2 kg × 35.274 = 70.55 ounces
Formula: pounds = stones × 14
Example: 12 stones × 14 = 168 pounds
1 stone equals 14 pounds exactly.
Formula: stones = pounds ÷ 14
Example: 140 pounds ÷ 14 = 10 stones
The metric system for weight is based on the gram, with larger and smaller units in multiples of 1000:
1 microgram = 0.001 milligram
1 milligram = 0.001 gram
1 gram = 0.001 kilogram
1 kilogram = 0.001 metric ton
Example: 5000 grams ÷ 1000 = 5 kg
The imperial system has several different relationships between units:
1 ounce = 1/16 pound
1 pound = 16 ounces
1 stone = 14 pounds
1 short ton = 2000 pounds
1 long ton = 2240 pounds
A weight converter calculator eliminates calculation errors and saves time. Whether you're cooking, shipping packages, tracking fitness goals, or working in science and engineering, accurate weight conversions are essential. The calculator handles decimal precision automatically.
| From Unit | To Unit | Conversion Factor |
|---|---|---|
| kg | pounds | × 2.20462 |
| pounds | kg | ÷ 2.20462 |
| grams | ounces | ÷ 28.3495 |
| ounces | grams | × 28.3495 |
| pounds | ounces | × 16 |
| ounces | pounds | ÷ 16 |
| kg | grams | × 1000 |
| grams | kg | ÷ 1000 |
| metric tons | pounds | × 2204.62 |
| pounds | metric tons | ÷ 2204.62 |
| short tons | pounds | × 2000 |
| kg | ounces | × 35.274 |
| stones | pounds | × 14 |
| pounds | stones | ÷ 14 |
The easiest way is to use an online weight converter calculator. Enter the number, choose your units, and get the converted value instantly with high precision.
pounds = kilograms × 2.2 (rounded). Example: 70 kg × 2.2 = 154 pounds. For exact results, use × 2.20462.
kilograms = pounds ÷ 2.20462. Example: 180 pounds ÷ 2.20462 = 81.65 kg.
1 pound equals exactly 16 ounces.
ounces = grams ÷ 28.3495. Example: 100 grams ÷ 28.3495 = 3.53 ounces.
grams = ounces × 28.3495. Example: 8 ounces × 28.3495 = 226.8 grams.
For US short tons: pounds = tons × 2000. For metric tons: pounds = metric tons × 2204.62.
1 kilogram equals exactly 1000 grams.
grams = kilograms × 1000. Example: 2.5 kg × 1000 = 2500 grams.
1 stone equals exactly 14 pounds.
First convert stones to pounds (× 14), then convert pounds to kg (÷ 2.20462). Example: 10 stones × 14 ÷ 2.20462 = 63.5 kg.
A metric ton (tonne) equals 1000 kg or 2204.62 pounds. A US short ton equals 2000 pounds exactly.
ounces = kilograms × 35.274. Example: 3 kg × 35.274 = 105.82 ounces.
Yes, weight converters are perfect for cooking. Convert recipe measurements between grams, ounces, pounds, and kilograms accurately.
If it uses standard conversion factors, it will be accurate to many decimal places, suitable for most practical applications.
Mass measures the amount of matter in an object, while weight measures gravitational force. For everyday conversions, the terms are used interchangeably.
US short ton = 2000 lbs. Metric ton (tonne) = 2204.62 lbs. Long ton = 2240 lbs. Convert through pounds as the common unit.
Yes, from micrograms to metric tons, weight converters handle the full range of weight measurements used in science, industry, and daily life.
Most countries use the metric system (kg), while the United States primarily uses the imperial system (pounds). The UK uses a mix of both systems.
For body weight: pounds = kg × 2.2 (simple), or kg × 2.20462 (precise). Example: 70 kg = 154 lbs.