Carat to Pound Conversion Calculator: Free Online Tool
Convert carats to pounds with our free online weight converter.
Carat to Pound Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Carat).
- The converted value in Pound will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Weight category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Carat to Pound
Converting Carat to Pound involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Carat = 0.000440925 poundsExample Calculation:
Convert 5 carats: 5 × 0.000440925 = 0.00220462 pounds
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Carat and a Pound?
The carat is a unit of mass used for measuring gemstones and pearls. It is defined as exactly 200 milligrams (0.2 grams).
The pound (avoirdupois) is a unit of mass used in the imperial and US customary systems. It is defined as exactly 0.45359237 kilograms.
Note: The Carat is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Pound belongs to the imperial/US customary system.
History of the Carat and Pound
The term "carat" comes from the carob seed ("keration" in Greek), which was historically used as a standard for weighing small quantities due to its perceived uniform weight. The metric carat of 200 mg was adopted internationally in 1907.
Originates from the Roman 'libra'. The avoirdupois pound became the standard for commerce in England and was later adopted in the US.
Common Uses for carats and pounds
Explore the typical applications for both Carat (imperial/US) and Pound (imperial/US) to understand their common contexts.
Common Uses for carats
- Jewelry Industry: The primary unit for weighing diamonds and other precious gemstones.
- Pearls: Used for weighing pearls.
- Note: This is distinct from "karat," which measures the purity of gold.
Common Uses for pounds
- Body Weight: The primary unit for measuring human body weight in the United States, United Kingdom, and Canada, commonly seen on personal scales.
- Food & Groceries (US/UK): Standard unit for selling and pricing produce (e.g., apples, potatoes by the pound), meat, cheese, and deli items. Recipe ingredients are often measured in pounds or ounces.
- General Weight: Used for everyday weight measurements in non-scientific contexts in the US/UK, such as package weight for domestic shipping or luggage weight.
- Specific Applications: Sometimes used in technical fields like measuring tire pressure (pounds per square inch, PSI - though PSI is pressure, not mass) or fishing line strength (lb-test).
Frequently Asked Questions
Questions About Carat (ct)
How many milligrams are in a carat?
There are exactly 200 milligrams (mg) in 1 carat (ct).
How many grams are in a carat?
There are 0.2 grams (g) in 1 carat (ct).
Is carat the same as karat?
No. Carat (ct) measures mass (weight) for gemstones, while Karat (K or kt) measures the purity of gold (e.g., 24K gold is pure gold).
About Pound (lb)
What measurement system uses pounds?
The pound (lb) is a key unit in the imperial and US customary measurement systems.
Where is the pound commonly used?
Primarily in the United States, United Kingdom, and Canada for everyday measurements like body weight and groceries.
How many ounces are in a pound?
There are exactly 16 avoirdupois ounces (oz) in 1 avoirdupois pound (lb).
Conversion Table: Carat to Pound
| Carat (ct) | Pound (lb) |
|---|---|
| 1 | 0 |
| 5 | 0.002 |
| 10 | 0.004 |
| 25 | 0.011 |
| 50 | 0.022 |
| 100 | 0.044 |
| 500 | 0.221 |
| 1,000 | 0.441 |
All Weight Conversions
Other Units from Weight
- Kilogram (kg)
- Gram (g)
- Milligram (mg)
- Ounce (oz)
- Stone (st)
- Ton (metric) (t)
- Ton (US) (ton)
- Ton (UK) (long ton)
- Microgram (µg)
- Slug (sl)
- Troy Ounce (oz t)
- Pennyweight (dwt)
- Grain (gr)
- Dram (dr)
- Quintal (q)
- Atomic Mass Unit (u)
- Pavan (India) (pavan)
- Kati (India) (kati)
- Masha (India) (masha)
- Dina (India) (dina)
- Pras (India) (pras)
- Lota (India) (lota)