Greek Numerals Calculator and Converter

Greek Numeral Converter

Decimal → Greek

Greek → Decimal

Enter Decimal Number (e.g., 1-999,999)

Greek Numeral:

About Greek Numerals

The Greek alphabetic numeral system assigns numerical values to letters of the Greek alphabet (αʹ=1, βʹ=2, ..., ιʹ=10, κʹ=20, ..., ρʹ=100, σʹ=200, etc.).

The keraia (ʹ) marks letters as numerals. The lower numeral sign (͵) placed before a group of letters multiplies their combined value by 1000 (e.g., ͵βʹ = 2000, ͵ιβʹ = 12000).

Negative numbers are represented with a minus sign (−) prefix. Note: Ancient Greeks didn't use negative numbers; this is a modern adaptation.

Greek Numeral Calculator

First Greek Numeral Symbols for First Numeral:

Operation

Second Greek Numeral Symbols for Second Numeral:

Result:

Attic Calendar Date (Approximation)

Select Gregorian Date

Approximate Attic Calendar Date:

Historical Greek Calendars

Ancient Greece used various lunisolar calendars, like the Attic calendar (Athens), starting near the summer solstice. Intercalary months were added periodically.

Note: This conversion is a simplified approximation and doesn't account for precise ancient timekeeping complexities.

c. 8th Century BCE

Early Greek calendars develop, varying by city-state.

c. 6th Century BCE

Solon reforms the Athenian calendar.

432 BCE

Meton proposes the 19-year Metonic cycle.

c. 330 BCE

Callippus refines the cycle (76-year period).

Greek Numeral Clock

Greek Numeral Time Display

This live clock displays the current time using Greek numerals. The analog clock face uses Greek alphabetic numerals for hours (α′-ιβ′), while the digital display shows hours, minutes, and seconds in Greek numeral format.

Note: Greek numerals traditionally didn't have a symbol for zero. When seconds or minutes are zero, we display "-" as a placeholder.

Greek Numeral Reference

Units (1-9)

Greek	Value
αʹ	1
βʹ	2
γʹ	3
δʹ	4
εʹ	5
ϛʹ	6
ζʹ	7
ηʹ	8
θʹ	9

Tens (10-90)

Greek	Value
ιʹ	10
κʹ	20
λʹ	30
μʹ	40
νʹ	50
ξʹ	60
οʹ	70
πʹ	80
ϟʹ	90

Hundreds (100-900)

Greek	Value
ρʹ	100
σʹ	200
τʹ	300
υʹ	400
φʹ	500
χʹ	600
ψʹ	700
ωʹ	800
ϡʹ	900

Thousands (1000-9000)

Greek	Value
͵α	1000
͵β	2000
͵γ	3000
͵δ	4000
͵ε	5000
͵ϛ	6000
͵ζ	7000
͵η	8000
͵θ	9000

Note: The lower numeral sign (͵) precedes the unit letter. Keraia (ʹ) is often omitted for thousands.