How to use the Greek alphabet table
- Find a letter by name (sigma), by the letter itself (Σ) or by what it is used for (angle).
- Click the capital or small letter to copy it.
- Paste it into a document, a message or an equation.
Greek letters in math and science
Greek letters give math and science extra symbols beyond the Latin alphabet: π for the ratio of a circle’s circumference to its diameter, Σ for summing a list, Δ for a change, μ for one millionth, Ω for ohms and λ for wavelength. Statistics uses μ and σ for a population’s mean and standard deviation.
Look-alikes
Several capitals look exactly like Latin letters (Α, Β, Ε, Ζ, Η, Ι, Κ, Μ, Ν, Ο, Ρ, Τ, Υ, Χ) but are different characters. Copying from this table gives you the real Greek letter, which matters for search, spell-checking and passwords.