Convert Ounce to Poundal
Convert ounces to poundals instantly. 1 ounce = 2.0124999933 poundal — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Poundal to Ounce converter for the reverse conversion.
Units explained
Ounce
The (avoirdupois) ounce (oz) equals one-sixteenth of a pound, about 28.35 grams.
From Latin 'uncia', meaning a twelfth part.
US food portions, postal weights, and boxing weight classes.
Standardized as 1/16 of the international pound from 1959.
Poundal
The poundal (pdl) is the FPS absolute unit of force; its mass-equivalent on this scale is about 0.0141 kg.
Defined in the foot-pound-second absolute system in the late 19th century.
Early 20th-century physics and engineering.
Introduced in the absolute FPS system as an alternative to gravitational units.
Ounce to Poundal conversion formula
The relationship between ounces and poundals:
To convert ounces to poundals, multiply the value in ounces by 2.0124999933. To reverse, multiply poundals by 0.4968944116.
How to use this converter
Type a value into the calculator. The result in poundals updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Poundal to Ounce converter for the reverse direction.
Step-by-step: convert ounces to poundals
- Write down the value in ounces (oz).
- Multiply that value by the factor 2.0124999933.
- The product is the equivalent value in poundals (pdl).
- To reverse, multiply the poundal value by 0.4968944116.
Worked examples
Example 1 — Convert 1 oz to pdl:
1 × 2.0124999933 = 2.0124999933 pdl
Example 2 — Convert 100 oz to pdl:
100 × 2.0124999933 = 201.2499993256 pdl
Real-world example — Ruler-scale measurements
A 30-ounce school ruler converts cleanly to poundals — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 oz × 2.0124999933 = 60.3749997977 pdl
Real-world example — Hardware-scale dimensions
A 10-ounce fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between ounces and poundals daily when mixing metric and imperial tools.
10 oz × 2.0124999933 = 20.1249999326 pdl
Real-world example — Postcard and small-object dimensions
A postcard is about 5 ounces wide. Converting to poundals is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 oz × 2.0124999933 = 10.0624999663 pdl
Ounce to Poundal conversion table
Standard reference values for converting ounces to poundals:
| Ounce [oz] | Poundal [pdl] |
|---|---|
| 0.01 | 0.0201249999 |
| 0.1 | 0.2012499993 |
| 1 | 2.0124999933 |
| 2 | 4.0249999865 |
| 3 | 6.0374999798 |
| 4 | 8.049999973 |
| 5 | 10.0624999663 |
| 10 | 20.1249999326 |
| 20 | 40.2499998651 |
| 30 | 60.3749997977 |
| 40 | 80.4999997302 |
| 50 | 100.6249996628 |
| 100 | 201.2499993256 |
| 500 | 1006.249996628 |
| 1000 | 2012.4999932561 |
Frequently asked questions
How many poundals is 1 ounce?
How do I convert ounces to poundals?
How do I convert poundals back to ounces?
How many poundals is 100 ounces?
Popular weight unit conversions
Convert Ounce to other weight units
Show all Ounce 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 oz = 2.0124999933 pdl) 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.