20 Pound to Stone
Quick answer
20 Pound (lb) equals
1.428571 st
To convert 20 Pounds to Stones, multiply by 0.0714285714. Therefore, 20 Pound (lb) equals 1.428571 Stone (st).
Formula: st = lb × 0.0714285714. Calculation: 20 × 0.0714285714 = 1.428571 st.
Convert Pound (lb) to Stone (st) online with our free unit converter. In mass, 1 lb = 0.071429 st. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Pound to Stone
- Step 1 — start with the formula. st = lb × 0.0714285714
- Step 2 — substitute your figure. 20 lb × 0.0714285714
- Step 3 — read the result. 20 lb = 1.428571 st
- Step 4 — check it in reverse. lb = st × 14 returns 20 lb, which matches the figure you started with.
Mass Converter
26 units available
20 lb = 1.428571 st
Formula:
st = lb × 0.0714285714With your value: 20 lb = 1.42857143 st
How big is that?
Everyday references on a logarithmic scale, all expressed in pound so you can sanity-check the result.
Other Pound to Stone conversions
Pound to Stone Conversion Table
| Pound (lb) | Stone (st) |
|---|---|
| 0.5 | 0.035714 |
| 1 | 0.071429 |
| 2 | 0.142857 |
| 5 | 0.357143 |
| 10 | 0.714286 |
| 15 | 1.071429 |
| 20 | 1.428571 |
| 25 | 1.785714 |
| 50 | 3.571429 |
| 100 | 7.142857 |
| 250 | 17.857143 |
| 500 | 35.714286 |
| 1000 | 71.428571 |
Stone to Pound Conversion Table
| Stone (st) | Pound (lb) |
|---|---|
| 0.5 | 7 |
| 1 | 14 |
| 2 | 28 |
| 5 | 70 |
| 10 | 140 |
| 15 | 210 |
| 20 | 280 |
| 25 | 350 |
| 50 | 700 |
| 100 | 1,400 |
| 250 | 3,500 |
| 500 | 7,000 |
| 1000 | 14,000 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Pound (lb)
Mass
1 avoirdupois pound = 0.453 592 37 kg exactly (1959 international agreement).
Source: International Yard and Pound Agreement of 1959; NIST Federal Register Notice 59-5442
US, UK, Canada, Australia, New Zealand, South Africa · Reviewed 2026-07-01
Stone (st)
Mass
Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Pound to Stone
To convert from Pound (lb) to Stone (st), multiply the value by 0.0714285714.
Formula: st = lb × 0.0714285714
Reverse: lb = st × 14
Step-by-Step Example
- Start with your value in Pound. For example: 5 lb
- Multiply by the conversion factor: 5 x 0.0714285714
- The result is: 0.357143 st
Pound and Stone Relationship
Both Pound and Stone belong to the US Customary / Imperial system, making this an intra-system conversion within mass. Since 1 Pound represents a fraction of a Stone (1 Stone ≈ 14 Pounds), the Stone is the larger measurement interval. Understanding the relationship between Pound and Stone is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Pound
The pound (lb) is an imperial unit of mass equal to exactly 0.45359237 kilograms. It is the primary unit of weight in the United States.
Fun Fact: The abbreviation "lb" comes from the Latin "libra pondo" meaning "a pound by weight."
Common uses of Pound: body weight (US), food packaging, shipping.
About Stone
The stone equals 14 pounds or about 6.35 kg. It is primarily used in the UK and Ireland for expressing body weight.
Fun Fact: The stone varied in weight depending on the commodity being weighed until it was standardized at 14 pounds in 1835.
Common uses of Stone: body weight (UK), agriculture.
Frequently Asked Questions
- What is 20 Pound in Stone?
- 20 Pound equals 1.428571 Stone.
- How many Stones are in 1 Pound?
- There are exactly 0.0714285714 Stones in 1 Pound. This means the conversion factor from Pound to Stone is 0.0714285714.
- What is the formula to convert Pound to Stone?
- The formula to convert Pound to Stone is: st = lb × 0.0714285714. For example, to convert 10 Pounds to Stones, you would multiply 10 by 0.0714285714.
- What is a Pound?
- The pound (lb) is an imperial unit of mass equal to exactly 0.45359237 kilograms. It is the primary unit of weight in the United States.
- What is a Stone?
- The stone equals 14 pounds or about 6.35 kg. It is primarily used in the UK and Ireland for expressing body weight.
- What are the common uses of Pound?
- The Pound is commonly used in body weight (US), food packaging, shipping.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). 20 Pound to Stone. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/20-pound-to-stone