Convert Pennyweight to Quarter (UK)
Convert pennyweights to quarters (uk) instantly. 1 pennyweight = 0.000122449 quarter (uk) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Quarter (UK) to Pennyweight converter for the reverse conversion.
Units explained
Pennyweight
The pennyweight (dwt) equals one-twentieth of a troy ounce, 24 grains (about 1.555 g).
From the mass of a medieval English silver penny; symbol dwt from 'denarius weight'.
Jewelry making and precious-metal scrap valuation in the US.
Derived from the medieval English coinage system.
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.
Pennyweight to Quarter (UK) conversion formula
The relationship between pennyweights and quarters (uk):
To convert pennyweights to quarters (uk), multiply the value in pennyweights by 0.000122449. To reverse, multiply quarters (uk) by 8166.6668767182.
How to use this converter
Type a value into the calculator. The result in quarters (uk) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Quarter (UK) to Pennyweight converter for the reverse direction.
Step-by-step: convert pennyweights to quarters (uk)
- Write down the value in pennyweights (dwt).
- Multiply that value by the factor 0.000122449.
- The product is the equivalent value in quarters (uk) (qr).
- To reverse, multiply the quarter (uk) value by 8166.6668767182.
Worked examples
Example 1 — Convert 1 dwt to qr:
1 × 0.000122449 = 0.000122449 qr
Example 2 — Convert 100 dwt to qr:
100 × 0.000122449 = 0.0122448976 qr
Real-world example — Ruler-scale measurements
A 30-pennyweight school ruler converts cleanly to quarters (uk) — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 dwt × 0.000122449 = 0.0036734693 qr
Real-world example — Hardware-scale dimensions
A 10-pennyweight fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between pennyweights and quarters (uk) daily when mixing metric and imperial tools.
10 dwt × 0.000122449 = 0.0012244898 qr
Real-world example — Postcard and small-object dimensions
A postcard is about 5 pennyweights wide. Converting to quarters (uk) is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 dwt × 0.000122449 = 0.0006122449 qr
Pennyweight to Quarter (UK) conversion table
Standard reference values for converting pennyweights to quarters (uk):
| Pennyweight [dwt] | Quarter (UK) [qr] |
|---|---|
| 0.01 | 1.22449e-6 |
| 0.1 | 1.22449e-5 |
| 1 | 0.000122449 |
| 2 | 0.000244898 |
| 3 | 0.0003673469 |
| 4 | 0.0004897959 |
| 5 | 0.0006122449 |
| 10 | 0.0012244898 |
| 20 | 0.0024489795 |
| 30 | 0.0036734693 |
| 40 | 0.0048979591 |
| 50 | 0.0061224488 |
| 100 | 0.0122448976 |
| 500 | 0.0612244882 |
| 1000 | 0.1224489764 |
Frequently asked questions
How many quarters (uk) is 1 pennyweight?
How do I convert pennyweights to quarters (uk)?
How do I convert quarters (uk) back to pennyweights?
How many quarters (uk) is 100 pennyweights?
Popular weight unit conversions
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Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 dwt = 0.000122449 qr) 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.