Convert Quarter (UK) to Carat (metric)
Convert quarters (uk) to carats (metric) instantly. 1 quarter (uk) = 63502.9318 carat (metric) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Carat (metric) to Quarter (UK) converter for the reverse conversion.
Units explained
Quarter (UK)
The UK quarter equals one-fourth of a long hundredweight, 28 pounds (about 12.7 kg).
A 'quarter' of the hundredweight in the British imperial system.
Historical British trade in coal, grain, and agricultural goods.
Defined within the imperial hundredweight system.
Carat (metric)
The metric carat (ct) equals exactly 200 milligrams (0.0002 kg).
From Arabic 'qirat' and Greek 'keration', the carob seed once used as a counterweight.
The worldwide standard for gemstone and diamond mass.
The metric carat was fixed at 200 mg internationally in 1907.
Quarter (UK) to Carat (metric) conversion formula
The relationship between quarters (uk) and carats (metric):
To convert quarters (uk) to carats (metric), multiply the value in quarters (uk) by 63502.9318. To reverse, multiply carats (metric) by 1.57473e-5.
How to use this converter
Type a value into the calculator. The result in carats (metric) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Carat (metric) to Quarter (UK) converter for the reverse direction.
Step-by-step: convert quarters (uk) to carats (metric)
- Write down the value in quarters (uk) (qr).
- Multiply that value by the factor 63502.9318.
- The product is the equivalent value in carats (metric) (ct).
- To reverse, multiply the carat (metric) value by 1.57473e-5.
Worked examples
Example 1 — Convert 1 qr to ct:
1 × 63502.9318 = 63502.9318 ct
Example 2 — Convert 100 qr to ct:
100 × 63502.9318 = 6350293.1799999997 ct
Quarter (UK) to Carat (metric) conversion table
Standard reference values for converting quarters (uk) to carats (metric):
| Quarter (UK) [qr] | Carat (metric) [ct] |
|---|---|
| 0.01 | 635.029318 |
| 0.1 | 6350.29318 |
| 1 | 63502.9318 |
| 2 | 127005.8636 |
| 3 | 190508.7954 |
| 4 | 254011.7272 |
| 5 | 317514.659 |
| 10 | 635029.318 |
| 20 | 1270058.6359999999 |
| 30 | 1905087.9539999999 |
| 40 | 2540117.2719999999 |
| 50 | 3175146.5899999999 |
| 100 | 6350293.1799999997 |
| 500 | 3.175147e+7 |
| 1000 | 6.350293e+7 |
Frequently asked questions
How many carats (metric) is 1 quarter (uk)?
How do I convert quarters (uk) to carats (metric)?
How do I convert carats (metric) back to quarters (uk)?
How many carats (metric) is 100 quarters (uk)?
Popular weight unit conversions
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Metric / SI (18 units)
Avoirdupois (14 units)
Troy & Apothecary (10 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 qr = 63502.9318 ct) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.