Number System Comparison Table Calculator
Convert a whole number between decimal, binary, octal, hexadecimal and any base from 2 to 36, and compare the number of digits in each.
Compare Your Options And Get Clear Answers
Convert a whole number between decimal, binary, octal, hexadecimal and any base from 2 to 36, and compare the number of digits in each.
Number System Comparison Table Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Divide Repeatedly
Divide the number by the base and record the remainder.
Read Remainders
Read remainders from last to first.
Compare Digits
Higher bases need fewer digits.
Use As A Guide
Results are estimates based on your inputs. Check real quotes, rates and professional advice before deciding.
Number System Reference
Decimal 0 to 15 in common bases.
| Decimal | Binary | Octal | Hex |
|---|---|---|---|
| 0 | 0000 | 0 | 0 |
| 5 | 0101 | 5 | 5 |
| 10 | 1010 | 12 | A |
| 15 | 1111 | 17 | F |
| 16 | 10000 | 20 | 10 |
| Rule of Thumb | Binary = base 2 | Hex = 4 bits per digit | Octal = 3 bits per digit |
Number System Comparison Calculator FAQ
Answers to common questions about this calculator.
A base-2 number system using only 0 and 1. Computers use it internally.
It is a compact way to write binary, with each hex digit representing four bits.
Divide by 2 repeatedly, note the remainders and read them in reverse order.
Whole numbers up to about 9 quadrillion (safe integers in JavaScript).