base 8 is a positional numeral system with eight as its base. It uses 8 different digits for representing numbers. The digits for base 8 could be 0, 1, 2, 3, 4, 5, 6, and 7.

conversion table

base 8	base 7	base 8	base 7
1	≈ 1	13	≈ 14
2	≈ 2	14	≈ 15
3	≈ 3	15	≈ 16
4	≈ 4	16	≈ 20
5	≈ 5	17	≈ 21
6	≈ 6	20	≈ 22
7	≈ 10	21	≈ 23
10	≈ 11	22	≈ 24
11	≈ 12	23	≈ 25
12	≈ 13	24	≈ 26