How many pounds is 1 carat?

1 carat equals exactly 0.2 grams. Since 1 pound is 453.59237 grams, 1 carat is approximately 0.000440925 pounds (about 0.00044 lb).

Is a carat the same as a karat?

No. A carat (ct) is a unit of mass equal to 0.2 g, used for gemstones and pearls. A karat (kt or k) is a measure of gold purity (24 karat = pure gold). This tool works with carat as a unit of weight only.

Why is carat used for gemstones?

The word "carat" comes from the carob seed, historically used as a counterweight on scales. The metric carat was standardized internationally in 1907 at exactly 0.2 grams and is still the universal gem-weight unit today.

How do I convert pounds back to carats?

Multiply the pound value by 453.592 to get grams, then multiply by 5 (since 1 carat = 0.2 g = 1/5 g). So pounds × 2267.96 = carats.

What is the largest gemstone weight in carats ever recorded?

The Cullinan Diamond, found in 1905, weighed 3,106.75 carats (about 1.37 pounds) in its rough state — the largest gem-quality rough diamond ever discovered.

Carats to Pounds Converter

Enter a weight in carats and instantly get the equivalent in pounds, with intermediate gram values shown.

Carats to Pounds

Weight in Carats (ct)

Enter a carat value above to see the conversion.

Quick Reference

Carats (ct)	Pounds (lb)	Grams (g)

Batch Converter

One carat value per line.

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Summary

This tool converts weight in carats (ct) — the standard unit for gemstones and diamonds — to pounds (lb). One carat equals exactly 0.2 grams, and there are approximately 453.592 grams in a pound, making 1 carat equal to about 0.000440925 pounds. The converter shows the gram value as well so you can cross-check against a scale.

How it works

Enter the carat value you want to convert in the input field.
The converter multiplies carats by 0.2 to get grams.
Grams are then divided by 453.592 to get pounds.
Results update instantly as you type.
Use the batch converter to process multiple values at once.

Use cases

Converting gemstone weights listed in carats to pounds for shipping forms.
Checking diamond or gem weight in pounds when only carat weight is given.
Jewelers calculating total parcel weight across multiple stones.
Students verifying unit-conversion homework answers.
Online shoppers comparing gem weights across different unit systems.
Appraisers who need pound values for customs or insurance declarations.

Frequently Asked Questions

Last updated: 2026-06-04 · Reviewed by Nham Vu