Digital tools

Number-base converter

Exact integer conversion from binary to base 36.

How it works

Value = sum of each digit × base raised to its position

Supports bases 2–36 and signed 64-bit integers (−9223372036854775808 to 9223372036854775807). Use digits 0–9 and A–Z, without prefixes such as 0x. Integer results stay exact.

How to use this tool

Enter an integer using digits valid in the source base. Choose whole-number bases from 2 through 36. Use a leading minus sign for negative values and omit prefixes such as 0x.

Worked example

Hexadecimal FF is 15 × 16 + 15 = 255 in decimal. In binary the same number is 11111111.

Limits of this tool

Supports signed 64-bit integers only. Fractions and two’s-complement bit-pattern interpretation are not supported. Letters are accepted without case sensitivity.

Good to know

Invalid digits and values beyond the supported integer range are rejected.

Everything runs on your device. No inputs are sent to a server.

Number-base converter

A few more useful tools

Scientific calculator

Percentage calculator

Discount calculator