Slugs to Kilograms (slug to kg)
1 slug equals 14.59390294 kilograms (rounded).
How to convert slugs to kilograms
To convert slugs to kilograms, multiply the number of slugs by 14.59390294. The factor is rounded to 10 significant digits. To go the other way, multiply kilograms by 0.06852176586 (rounded).
kilograms = slugs × 14.59390294
Example: 10 slugs = 145.9390294 kilograms.
About these units
Slug (slug)
About 14.594 kg. The US engineering unit of mass: the mass that accelerates at 1 ft/s² under a force of 1 pound-force.
Physics teachers in feet-and-pounds countries face an awkward fact: the pound is used both as a unit of mass and as a unit of force. The slug removes the ambiguity. It is the mass that a force of one pound-force accelerates at one foot per second squared, so that one slug equals one lbf s squared per foot. The British physicist Arthur Mason Worthington is credited with coining the name before 1900, taking it in the sense of a block of metal rather than the mollusc. An older name for it was the geepound.
One slug is about 14.594 kg, which is roughly 32.17 avoirdupois pounds, and the figure used here follows standard gravity, the international foot and the avoirdupois pound. An object of one slug weighs about 143.1 newtons at the Earth's surface. The unit belongs to the gravitational foot-pound-second system and stayed mostly in American engineering while a 1928 textbook noted that no special name was really needed. Its inch-based cousin, 12 slugs, is jokingly called a blob or slinch.
1 slug = 14.59390294 kilograms (approximately).
Sources: Wikipedia: Slug (unit); NIST Guide to the SI, Appendix B.8: conversion factors
Kilogram (kg)
The SI base unit of mass. Since 2019 it is defined by fixing the value of the Planck constant, replacing the old platinum-iridium cylinder in Paris.
Oddly for a base unit, the kilogram began life as a derived one. In 1793 revolutionary France defined the grave as the mass of one litre of water, and a decree of 1795 then replaced it with the kilogramme, a name built from the Greek khilioi (a thousand) and gramma, a Late Latin word for a small weight. In 1799 a platinum cylinder, the Kilogramme des Archives, became the physical standard, matching a cubic decimetre of water at its densest, around 4 degrees Celsius. In 1889 the metric community adopted a platinum-iridium cylinder made in 1879, the International Prototype of the Kilogram, nicknamed Le Grand K.
The kilogram is still the only SI base unit with a prefix in its name. Because SI forbids stacked prefixes, a millionth of a kilogram is a milligram rather than a microkilogram, so every mass prefix is attached to the gram. Calibrating every national standard against one object in a vault near Paris meant that all of them drifted relative to it, so in November 2018 member states voted to tie the kilogram to a fixed value of the Planck constant. The change took effect on 20 May 2019. Day to day nothing shifted, but the definition no longer depends on a single piece of metal.
The kilogram is the reference unit for weight & mass on this site.
Sources: NIST: Kilogram introduction (SI redefinition); Wikipedia: Kilogram
Related conversions
- Kilograms to slugs (reverse)
- Slugs to grams
- Slugs to metric tons
- Slugs to pounds
- Slugs to ounces
- Grams to kilograms
- Metric tons to kilograms
- Pounds to kilograms
- Ounces to kilograms
- Milligrams to kilograms
- Micrograms to kilograms
- Carats to kilograms
- Stone to kilograms
- Short tons to kilograms
- Long tons to kilograms
- Troy ounces to kilograms
- Daltons to kilograms
See all weight & mass units.