Free Weight Converter

Convert kilograms, pounds, ounces, stones, grams, and more instantly. No signup, no uploads, 100% private and accurate.

From:

To (optional):

Kilograms

1.0000

Grams

1000.00

Milligrams

1000000.00

Metric Tons

0.0010

Pounds

2.2046

Ounces

35.2740

Stones

0.1575

US Tons

0.0011

short tn

UK Tons

0.0010

long tn

Carats

5000.00

Troy Ounces

32.1507

oz t

Grains

15432.36

Newtons

9.8067

🔒💻

Privacy First — No Server Uploads
All conversions happen locally in your browser. No data is sent to any server. No signup, no tracking, no storage.

Convert Between Metric and Imperial Weight Units Instantly

Our free weight converter is the all-in-one tool for converting between metric (kilograms, grams, milligrams, metric tons) and imperial (pounds, ounces, stones, tons) weight units, plus specialty units like carats, troy ounces, grains, and even newtons. Whether you're cooking, shipping packages, working out, weighing jewelry, or doing science homework, this online weight converter gives you accurate results in real time — all without uploading your data.

⚖️ 13+ Weight Units

Kilograms, pounds, ounces, stones, grams, milligrams, metric tons, US/UK tons, carats, troy ounces, grains, and newtons.

🔄 Bidirectional Conversion

Convert from any unit to any other. See all results at once in the panel on the right.

📐 Highly Accurate

Uses standard conversion factors with up to 4 decimal places of precision.

🔒 100% Private

All calculations run locally in your browser — no uploads, no servers, no tracking.

⚡ No Signup

Use the tool instantly. No registration, no email, no payment.

📱 Works Anywhere

Responsive design works on desktop, tablet, and mobile devices.

How to Use This Free Weight Converter

1. Select the unit you want to convert from using the first dropdown.
2. Enter a numeric value (e.g., 5, 2.5, 100).
3. (Optional) Choose a target unit if you want a specific conversion.
4. The results panel instantly displays the equivalent value in 13 different weight units.
5. Use the "Convert" button to refresh results if needed.

Weight Conversion Formulas You Can Trust

Our tool uses exact, industry-standard conversion factors:
- 1 kg = 2.2046226218 lb (kilograms to pounds)
- 1 lb = 0.45359237 kg (pounds to kilograms)
- 1 kg = 35.27396195 oz (kilograms to ounces)
- 1 oz = 28.349523125 g (ounces to grams)
- 1 st = 14 lb = 6.35029318 kg (stones to kilograms)
- 1 metric ton = 1000 kg
- 1 US ton (short) = 907.18474 kg
- 1 UK ton (long) = 1016.0469088 kg
- 1 carat = 0.2 g (precious stones)
- 1 troy oz = 31.1034768 g (precious metals)
- 1 grain = 0.06479891 g
- 1 newton = 0.1019716213 kg (force at Earth's surface)

Perfect for Everyday & Professional Use

Kitchen & Cooking: Convert grams to ounces for recipes. Fitness & Health: Convert kilograms to pounds for body weight, or stones to kg. Shipping & Logistics: Convert metric tons to US tons for freight. Jewelry: Convert carats to grams or grains. Science & Engineering: Convert kilograms to newtons for force calculations. Our free weight converter online handles it all.

Frequently Asked Questions

How do I convert kilograms to pounds?

Multiply the kilogram value by 2.20462. For example, 10 kg × 2.20462 = 22.0462 lb. Our converter does this instantly for you.

What's the difference between US tons and UK tons?

US tons (short tons) = 2,000 pounds (907.18 kg). UK tons (long tons) = 2,240 pounds (1,016.05 kg). Our tool supports both.

Why does the converter include newtons?

Newtons measure force, not mass. On Earth's surface, 1 kg of mass exerts about 9.81 N of force. This is useful for physics, engineering, and understanding weight as a force.

Is this weight converter accurate for precious metals?

Yes. Carats (for gemstones) and troy ounces (for gold, silver, platinum) use their exact international standard values.

Learn how to use this tool correctly by reading our step-by-step tutorial.

View Detailed Tutorial →