Number Tools
Number Tools
Convert integers between decimal, binary, hex, and octal; calculate percentages; evaluate math expressions; convert numbers to words; Roman numerals; bitwise operations; matrix operations; IEEE 754 visualizer; descriptive statistics; combinatorics (factorial/permutations/combinations); arbitrary-precision big number calculator.
Custom Output Base
Number Tools
Convert integers between decimal, binary, hex, and octal; calculate percentages; evaluate math expressions; convert numbers to words; Roman numerals; bitwise operations; matrix operations; IEEE 754 visualizer; descriptive statistics; combinatorics (factorial/permutations/combinations); arbitrary-precision big number calculator.
Common uses
- Convert hex color #FF5733 to decimal RGB
- Evaluate 2^10 + 255
- Convert decimal 255 to binary and hex
- Convert "forty-two" to 42
- Calculate mean and standard deviation of test scores
- Calculate 20 choose 5
- Multiply two 50-digit numbers exactly
Also searched as
- decimal to binary hex converter
- hex to decimal converter
- number base converter online
- ieee 754 floating point visualizer
- number to words converter
- roman numeral converter
- bitwise calculator
- matrix calculator determinant inverse
- standard deviation calculator
- ncr npr combinations calculator
- big number calculator arbitrary precision
- fraction and complex number calculator
Frequently asked questions
How do I convert decimal to binary, hex or octal?
Open the Base Converter tab, enter a number and see it in binary, octal, decimal and hex.
How do I see how a float is stored in IEEE 754?
The IEEE 754 tab shows the sign, exponent and mantissa bits of a floating-point number.
Can I calculate with very large numbers exactly?
Yes, the Big Number Calc tab uses arbitrary-precision arithmetic, so large integers are not rounded.
Can it convert numbers to words?
Yes, the Number to Words tab writes numbers out in words and converts words back to numbers.
What statistics can I calculate?
The Statistics tab computes descriptive statistics such as mean, median, mode, standard deviation, variance and quartiles.
Is my data uploaded to a server?
No. This tool runs entirely in your browser — your input is processed locally on your device and is never uploaded or stored on a server.