Convert Quarter (US) to Carat (metric)
Convert quarters (us) to carats (metric) instantly. 1 quarter (us) = 56699.04625 carat (metric) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Carat (metric) to Quarter (US) converter for the reverse conversion.
Units explained
Quarter (US)
The US quarter equals one-fourth of a short hundredweight, 25 pounds (about 11.34 kg).
A 'quarter' of the US short hundredweight.
US agricultural and commodity weighing.
Defined within the US customary 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 (US) to Carat (metric) conversion formula
The relationship between quarters (us) and carats (metric):
To convert quarters (us) to carats (metric), multiply the value in quarters (us) by 56699.04625. To reverse, multiply carats (metric) by 1.763698e-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 (US) converter for the reverse direction.
Step-by-step: convert quarters (us) to carats (metric)
- Write down the value in quarters (us) (qr).
- Multiply that value by the factor 56699.04625.
- The product is the equivalent value in carats (metric) (ct).
- To reverse, multiply the carat (metric) value by 1.763698e-5.
Worked examples
Example 1 — Convert 1 qr to ct:
1 × 56699.04625 = 56699.04625 ct
Example 2 — Convert 100 qr to ct:
100 × 56699.04625 = 5669904.625 ct
Quarter (US) to Carat (metric) conversion table
Standard reference values for converting quarters (us) to carats (metric):
| Quarter (US) [qr] | Carat (metric) [ct] |
|---|---|
| 0.01 | 566.9904625 |
| 0.1 | 5669.904625 |
| 1 | 56699.04625 |
| 2 | 113398.0925 |
| 3 | 170097.13875 |
| 4 | 226796.185 |
| 5 | 283495.23125 |
| 10 | 566990.4625 |
| 20 | 1133980.925 |
| 30 | 1700971.3875 |
| 40 | 2267961.8500000001 |
| 50 | 2834952.3125 |
| 100 | 5669904.625 |
| 500 | 2.834952e+7 |
| 1000 | 5.669905e+7 |
Frequently asked questions
How many carats (metric) is 1 quarter (us)?
How do I convert quarters (us) to carats (metric)?
How do I convert carats (metric) back to quarters (us)?
How many carats (metric) is 100 quarters (us)?
Popular weight unit conversions
Convert Quarter (US) to other weight units
Show all Quarter (US) conversions
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 = 56699.04625 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 Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.