Milligram to Carat Conversion Calculator: Free Online Tool
Convert milligrams to carats with our free online weight converter.
Milligram to Carat Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Milligram).
- The converted value in Carat 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 Milligram to Carat
Converting Milligram to Carat involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Milligram = 0.005 caratsExample Calculation:
Convert 5 milligrams: 5 × 0.005 = 0.025 carats
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 Milligram and a Carat?
The milligram is a unit of mass in the metric system equal to one-thousandth of a gram (1/1000 g) or one-millionth of a kilogram (1/1,000,000 kg). It is commonly used for measuring very small quantities.
The carat is a unit of mass used for measuring gemstones and pearls. It is defined as exactly 200 milligrams (0.2 grams).
Note: The Milligram is part of the metric (SI) system, primarily used globally in science and trade. The Carat belongs to the imperial/US customary system.
History of the Milligram and Carat
Like the gram, the milligram's definition is derived directly from the kilogram. Its use became prevalent with the need for precise measurements in science and medicine as the metric system was adopted globally.
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.
Common Uses for milligrams and carats
Explore the typical applications for both Milligram (metric) and Carat (imperial/US) to understand their common contexts.
Common Uses for milligrams
- Pharmaceuticals: Measuring the dosage of medications, pills, and active ingredients in drugs.
- Scientific Research: Common unit for mass measurements in chemistry labs, biology, and physics experiments for very small quantities.
- Nutrition & Supplements: Used for labeling the content of vitamins, minerals, and other nutrients in dietary supplements.
- Precision Manufacturing: Weighing very lightweight items like microelectronic components, fine powders, or precious materials.
- Analytical Chemistry: Standard unit for quantifying trace elements and compounds in samples.
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.
Frequently Asked Questions
Questions About Milligram (mg)
How many milligrams are in a gram?
There are 1,000 milligrams (mg) in 1 gram (g).
Is the milligram used in everyday life?
Its most common everyday use is in medication dosages and supplement information. It's less common for general weighing compared to grams or kilograms.
What does 'milli' mean in milligram?
The prefix 'milli' denotes one-thousandth (1/1000).
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).
Conversion Table: Milligram to Carat
| Milligram (mg) | Carat (ct) |
|---|---|
| 1 | 0.005 |
| 5 | 0.025 |
| 10 | 0.05 |
| 25 | 0.125 |
| 50 | 0.25 |
| 100 | 0.5 |
| 500 | 2.5 |
| 1,000 | 5 |
All Weight Conversions
Other Units from Weight
- Kilogram (kg)
- Gram (g)
- Pound (lb)
- 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)