Level

Level or levels may refer to:

Engineering

Level (optical instrument), a device used to measure true horizontal or relative heights
Spirit level or bubble level, an instrument designed to indicate whether a surface is horizontal or vertical
Canal pound or level
Regrading or levelling, the process of raising and/or lowering the levels of land
Storey or level, a vertical unit of a building or a mine
Level (coordinate), vertical position
Horizontal plane parallel

A quantity, generally
Level (algebra), the lowest number of squares that sum to $- 1$ in a field
Level (logarithmic quantity), a logarithmic measure defined as the logarithm of a ratio of two like quantities
Level, the different values that a categorical variable can have
Level, the different values that a factor can have in factor analysis
Level, the different treatments that are applied within a factor in the design of experiments

Level (airline), a pan-European airline brand
Level (magazine), a video game magazine in the Czech Republic, Romania, and Turkey
Level Vodka, a brand of vodka
Level, a collection of objects with the same rank in an overlapping hierarchy
Level, a layer of defense in two-level defense in American football
Level, an indication of the number of previous posts to a forum thread
LEVEL, a website for men of color published by Medium
The Level (TV series), a British crime drama television series
Levels (film), a 2024 science fiction action film

A-Scale Sound Level
Biological organisation
Derived no-effect level
Energy levels, discrete amounts of energy that can be held by a quantum mechanical system or confined particle
Flesch-Kincaid Grade Level
GCE Ordinary Level
Gal Level, an R&B girl duo from Windhoek, Namibia
ILR scale, descriptions of abilities to communicate in a language
Level crossing, a place where a railway track and a road meet or cross at the same level
Level 3 (disambiguation)
Level 42, an English pop rock and jazz-funk band
Level measurement, instrumentation techniques to measure height within a vessel
Level of measurement, a theory of the kinds of scales or levels used for measuring
Level playing field, a concept about fairness where all play by the same set of rules
Level set, a set where a function takes on a given constant value
Leveling (disambiguation)
Leveling seat
Levellers
Pevensey Levels
Sea level, the average height of the ocean's surface, reference of height systems
Somerset Levels
Terror Alert Level
Water level, the average height of a water