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Weight Converter

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Convert between kilograms, pounds, ounces and more with our free Weight Converter. Instant, accurate weight unit conversions for cooking, fitness, and shipping.

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IN/OUT

Auto Process Client Side

Bulk Mode

Two-Unit
All Units

Formula

Change any value and the other will be calculated automatically

Kilogram (kg)

Gram (g)

Milligram (mg)

Microgram (μg)

Tonne (t)

Pound (lb)

Ounce (oz)

Stone (st)

Ton (US) (ton)

Metric Ton (MT)

Carat (ct)

Atomic Mass Unit (u)

Long Ton (UK) (long ton)

Short Hundredweight (US) (sh cwt)

Long Hundredweight (UK) (long cwt)

Pennyweight (dwt)

Grain (gr)

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Guide

About Weight Converter

Our Weight Converter is a tool that transforms weight measurements from one unit to another. This online utility helps users quickly convert between various weight units such as kilograms, grams, pounds, ounces, and more without manual calculations.

Key Features

Two-Unit Conversion: Convert directly between any two weight units
All Units Conversion: See a single value converted to multiple units simultaneously
Formula Display: View the exact conversion formula being used
Bulk Mode: Convert multiple values at once
Client-Side Processing: All calculations happen in your browser for privacy and speed

Supported Weight Units

Metric Units	Imperial/US Units	Other Units
Kilogram (kg)	Pound (lb)	Stone (st)
Gram (g)	Ounce (oz)	Carat (ct)
Milligram (mg)	Ton (US)	Grain (gr)
Metric Ton (t)	Ton (UK)	And more…

How to Use

Select “Two-Unit Conversion” or “All Units Conversion” tab
Enter the value you want to convert in the left input field
Select the source unit from the dropdown menu
Select the target unit from the second dropdown menu (for Two-Unit mode)
View the conversion result instantly
Toggle “Bulk Mode” if you need to convert multiple values

When to Use a Weight Converter

Cooking and Baking: Convert between grams and cups for international recipes
Fitness and Health: Track weight loss progress between pounds and kilograms
Shipping and Logistics: Calculate postage based on weight in different units
Science and Education: Convert between scientific and everyday weight measurements
International Commerce: Standardize weight measurements across different systems

Benefits of Using This Weight Converter

Accuracy: Precise conversions based on standard mathematical formulas
Time-Saving: Instant results without manual calculations
Versatility: Support for both common and specialized weight units
Educational: View the actual conversion formulas to understand the relationships between units
No Installation Required: Works on any device with a web browser

For more information on weight measurement systems, visit National Institute of Standards and Technology.

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 FAQ

How do I convert kilograms to pounds?

To convert kilograms to pounds, enter your value in the left field, select "Kilogram (kg)" from the dropdown, and choose "Pound (lb)" as the target unit. The conversion factor is 1 kg = 2.20462 pounds.
What's the difference between a US ton and a metric ton?

A US ton (also called a short ton) equals 2,000 pounds or 907.185 kilograms. A metric ton (tonne) equals 1,000 kilograms or 2,204.62 pounds. The metric ton is about 10% heavier than the US ton.
How accurate is an online weight converter?

Online weight converters like this one use precise mathematical formulas to provide accurate conversions. Our converter calculates to multiple decimal places to ensure high precision for both everyday and scientific use.
Why do recipes use different weight units?

Recipes use different weight units based on regional cooking traditions. US recipes typically use pounds and ounces, while European recipes often use grams and kilograms. Asian recipes might use other local measurements that need conversion.
What's the smallest weight unit commonly used?

The milligram (mg) is the smallest weight unit commonly used in everyday contexts. One milligram equals 0.001 grams. For scientific applications, even smaller units like micrograms (μg) and nanograms (ng) are used.