Base 18 or octodecimal is base on eighteen and require 18 different symbols (0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F, G and H. Plural name is base-18. Conversion Tool

Quickly convert numbers to and from Octodecimal (Base 18) format. Octodecimal, or Base 18, is used in specialized fields like computer science, cryptography, data encoding, and certain advanced mathematical and engineering calculations.

base 18 is a positional numeral system with eighteen as its base. It uses 18 different digits for representing numbers. The digits for base 18 could be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, g, and h.

Instant free online tool for base-18 to decimal conversion or vice versa. The base-18 to decimal conversion table and conversion steps are also listed. Also, explore tools to convert base-18 or decimal to other numbers units or learn more about numbers conversions.

Use this base converter calculator to convert from one base to another in number system with steps. Select any two bases from below list. You can also convert floating point numbers. This calculator converts up to 10 places of base conversion.

在线十进制转18进制转换器，可将任意十进制数值快速转换成18进制数，十进制转18进制工具不仅免费好用还支持小数、负数、浮点型以及超大数的转换。

In base 18 we would need 18 symbols for each position, e.g. $0,1,2,\ldots,9,A,B,C,\ldots,H$. An example of a number is base 18 could be: $$1H2E = (1\times 18^3) + (17 \times 18^2) + (2\times 18^1) + (15\times 18^0).$$ Of course, the famous example is binary, which is base 2.

Step by step conversion for Base 18 (Octodecimal) to Base 10 (Decimal) Prerequisites. List Base 18 and Base 10 allowed numbers with equivalent decimal sequence

See base 18 multiplication Tables online and print them. Base 18 multiplication tables for various ranges and numbers in easy to read and print formats.

Base 16 — Hexadecimal numeral system (also called base 16, or hex) is a positional numeral system with a radix, or base, of 16. It is used in modern digital equipment, computer science, and mathematics.