Our free Weight Conversion Calculator converts instantly between kilograms, grams, milligrams, pounds, ounces, metric tonnes, stones and carats. Use it to convert your body weight from kg to lbs, check recipe quantities in grams and ounces, convert gemstone weight in carats, or calculate shipment weights in tonnes — accurate results in real time.
Introduction
Are you tired of struggling with complex weight conversions? Whether you’re a culinary enthusiast, a student, a jeweller, a scientist or simply need accurate weight conversions, this tool gives you precise answers in one place.
How Our Weight Conversion Calculator Works
- Input Your Weight: Enter the weight you want to convert, for example 72.5.
- Choose Your Units: Select the unit you’re converting from and the unit you want to convert to — grams, kilograms, pounds, ounces, stones, carats and more.
- Get Instant Results: The converted weight appears immediately, along with a table showing the value in every other unit.
- Use the ⇆ swap button to reverse the conversion, or tap a quick chip for popular conversions like kg to lbs or ounces to grams.
Why Choose Our Calculator
- Precision Guaranteed: Uses internationally defined factors (1 lb = 0.45359237 kg exactly) for reliable results.
- Easy to Use: A clean, mobile-friendly interface designed for everyone, regardless of maths skill.
- Versatile Functionality: From grams to kilograms, pounds to ounces, and carats for gemstones — whether you’re cooking, shipping or conducting experiments.
Units and Conversion Formulas
| Unit | Conversion Formula |
|---|---|
| Gram (g) | 1 gram = 1,000 milligrams |
| Kilogram (kg) | 1 kilogram = 1,000 grams = 2.20462 lb |
| Milligram (mg) | 1 milligram = 0.001 grams |
| Metric Ton (tonne) | 1 metric ton = 1,000 kilograms |
| Pound (lb) | 1 pound = 453.59237 grams = 16 oz |
| Ounce (oz) | 1 ounce = 28.3495231 grams |
| Stone (st) | 1 stone = 6.35029318 kilograms = 14 lb |
| Carat (ct) | 1 carat = 0.2 grams = 200 mg |
Frequently Asked Questions
How do I convert kg to pounds?
Multiply the kilograms by 2.20462. For example, 70 kg × 2.20462 = 154.32 lb. To convert pounds to kg, multiply by 0.453592.
How many grams are there in one ounce?
One avoirdupois ounce equals 28.3495 grams. This is the ounce used for food and everyday items. Precious metals like gold use the troy ounce (31.1035 g), which is different.
How much does one carat weigh?
One metric carat is exactly 0.2 grams (200 milligrams). Carats measure the weight of diamonds and gemstones. Note that “karat” (K) for gold measures purity, not weight.
What is a stone in weight?
A stone is a British unit equal to 14 pounds or about 6.35 kg. It is still commonly used in the UK and Ireland to express body weight.
Is a metric tonne the same as a ton?
No. A metric tonne is 1,000 kg, which is the standard in India. A US short ton is about 907 kg and a UK long ton is about 1,016 kg.
Conclusion
Don’t let weight conversions weigh you down. With precision, versatility and ease of use, our Weight Conversion Calculator is your companion for every conversion need — try it today.