ANCIENT · DECIMAL SIGN VALUES

Brahmi

Additive signs for units and multiples of ten.

Convert numbers
Place
Indian subcontinent
Period / variant
Early additive numerals · from the 3rd century BCE
EXAMPLES

42 · Decimal sign values

40 + 2: the larger value precedes the smaller.

Worked example

Write 42 in Brahmi

Write the larger values first, from left to right. Each sign carries its own value; add the groups.

  1. Write this sign for 40. Its value is 40 by itself.

  2. Write this sign for 2. Its value is 2 by itself.

Check

40 + 2 = 42

Sources and notation notes

The Unicode Standard 17.0, chapter 14 · Unicode Brahmi character chart

Meet the symbols

Each tile shows a sign and what it means. A sign can stand for a whole amount, such as 10 or 100.

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 20
  • 30
  • 40
  • 50
  • 60
  • 70
  • 80
  • 90

How the symbols fit together

In the supported range of 1–99, a tens sign names the whole tens amount. Add the ones sign after it.

  1. For 42, separate the number into forty and two.
  2. Write the dedicated forty sign first. This one sign contributes all 40.
  3. Write the two sign next. Add the values: 40 + 2 = 42.
  4. For 90, use just the ninety sign. You do not add a zero after it, because the sign itself already means ninety.

10 in Brahmi

A dedicated ten sign, rather than one followed by zero.

42 in Brahmi

40 + 2: the larger value precedes the smaller.

99 in Brahmi

90 + 9, using two distinct additive signs.

This converter covers the verified unligated range 1–99. Historical hundreds and thousands use multiplicative ligatures and regional variants; those forms need a separate drawing and rules study. The range limit is an app limit, not the historical limit of Brahmi.

History

Brahmi was used across the Indian subcontinent and developed many regional forms. Its earlier numeral repertoire uses separate signs for ones and tens; a later positional digit set belongs to a different stage of the tradition.

How to read it

In the supported range of 1–99, a tens sign names the whole tens amount. Add the ones sign after it.

  1. For 42, separate the number into forty and two.
  2. Write the dedicated forty sign first. This one sign contributes all 40.
  3. Write the two sign next. Add the values: 40 + 2 = 42.
  4. For 90, use just the ninety sign. You do not add a zero after it, because the sign itself already means ninety.

Limits

This converter covers the verified unligated range 1–99. Historical hundreds and thousands use multiplicative ligatures and regional variants; those forms need a separate drawing and rules study. The range limit is an app limit, not the historical limit of Brahmi.

Compare systems