Stones (st) | Kilograms (kg) |
---|---|
0 | 0 |
1 | 6.35029318 |
2 | 12.70058636 |
3 | 19.05087954 |
4 | 25.40117272 |
5 | 31.7514659 |
6 | 38.10175908 |
7 | 44.45205226 |
8 | 50.80234544 |
9 | 57.15263862 |
10 | 63.5029318 |
20 | 127.0058636 |
30 | 190.5087954 |
40 | 254.0117272 |
50 | 317.514659 |
60 | 381.0175908 |
70 | 444.5205226 |
80 | 508.0234544 |
90 | 571.5263862 |
100 | 635.029318 |
1000 | 6350.29318 |
Converting between stones (st) and kilograms (kg) involves a straightforward application of a conversion factor, as both are units of mass. This section explains the conversion process, provides examples, and touches upon the historical context.
The key to converting between stones and kilograms lies in knowing the exact relationship between the two units. One stone is defined as exactly 14 pounds, and a pound is defined as exactly 0.45359237 kilograms.
Therefore, the conversion factor is:
To convert stones to kilograms, multiply the number of stones by the conversion factor 6.35029.
Formula:
Example:
To convert 1 stone to kilograms:
To convert kilograms to stones, divide the number of kilograms by the conversion factor 6.35029.
Formula:
Example:
To convert 1 kilogram to stones:
The stone as a unit of weight has a long history, particularly in Britain and Ireland. It was commonly used to measure agricultural products, such as wool, and human body weight. Although largely replaced by the metric system for trade purposes in many countries, it remains a common unit for expressing human weight in the UK. For more details on the history of the stone, you can refer to sources like Wikipedia's article on the Stone (unit).
Besides body weight, here are some examples where stones and kilograms might be used:
It's important to note that the conversion between stones and kilograms is based on fixed definitions and doesn't involve binary (base 2) or decimal (base 10) systems. These number systems are relevant for digital data storage and transfer rates, not for converting physical units of mass.
See below section for step by step unit conversion with formulas and explanations. Please refer to the table below for a list of all the Kilograms to other unit conversions.
Stones (abbreviated as "st") are a unit of mass primarily used in the United Kingdom and Ireland for measuring human body weight. One stone is equivalent to 14 pounds (lbs) or approximately 6.35 kilograms (kg). While officially deprecated for most purposes, it remains common in everyday conversation for expressing weight.
The relationship between stones, pounds, and kilograms can be expressed as follows:
Conversion formulas:
To convert pounds to stones:
To convert kilograms to stones:
The primary application of stones is for expressing human body weight in the UK and Ireland. Here are some examples:
While not commonly used for other quantities, theoretically, one could express the weight of other items in stones. For example:
It is important to note that stones are generally not used for measuring anything other than human body weight in everyday conversation.
There isn't a specific law or person fundamentally linked to the stone besides its formalization in the Weights and Measures Act. However, due to its use in reporting body weight, health professionals in the UK and Ireland are familiar with this unit.
Kilogram (kg) is the base unit of mass in the International System of Units (SI). It is a fundamental unit used to measure the amount of matter in an object. Unlike units like length or time, the kilogram's definition has historically been tied to a physical artifact.
For over a century, the kilogram was defined by the International Prototype Kilogram (IPK), a platinum-iridium cylinder stored at the International Bureau of Weights and Measures (BIPM) in France. This meant that the mass of every kilogram in the world was traceable back to this single object.
The IPK was not a perfect standard. Over time, it was observed to have changed mass slightly compared to its official copies. This instability, however small, was a major concern for scientific measurements that require utmost precision.
On May 20, 2019, the kilogram was redefined based on fundamental constants of nature. The new definition is linked to the Planck constant (), a cornerstone of quantum mechanics. The Planck constant has a fixed numerical value when expressed in SI units:
By fixing the value of , scientists can realize the kilogram through experiments involving quantum phenomena. This change provides a far more stable and reproducible definition than relying on a physical object. The experiment that is commonly used to realize the kilogram based on Planck's constant is called a Kibble balance.
It's important to distinguish between mass and weight. Mass (measured in kilograms) is the amount of matter in an object, while weight is the force exerted on that object due to gravity. Weight is measured in Newtons (N). The relationship between mass and weight is:
or
Where:
Convert 1 st to other units | Result |
---|---|
Stones to Micrograms (st to mcg) | 6350293180 |
Stones to Milligrams (st to mg) | 6350293.18 |
Stones to Grams (st to g) | 6350.29318 |
Stones to Kilograms (st to kg) | 6.35029318 |
Stones to Metric Tonnes (st to mt) | 0.00635029318 |
Stones to Ounces (st to oz) | 224 |
Stones to Pounds (st to lb) | 14 |
Stones to Tons (st to t) | 0.007 |