Omni Calculator
One toolkit for every number you need to work out
Standard arithmetic, scientific functions, 64-bit programmer tools, unit conversions, age and health estimates, live currency rates, and date math, all in one place. Each calculator shows its inputs and units next to the result so you can check it at a glance.
9
Calculator groups
25+
Global currencies
Everyday arithmetic
Standard calculator
Enter numbers with the digit pad or your keyboard, then press equals. The running expression stays visible above the result so you can confirm every step before you trust the answer.
Supports addition, subtraction, multiplication, division, percentages, and sign changes.
Expression
0
| Key | Function |
|---|---|
| 7 8 9 | Digit entry |
| 4 5 6 | Digit entry |
| 1 2 3 | Digit entry |
| 0 . = | Zero, decimal, evaluate |
| + − × ÷ | Basic operations |
| % ± | Percent and sign change |
Specialized tools
Find the right calculator fast
Each group keeps its inputs, units, and result format clear, so you can move from question to answer without guessing.
Advanced
Scientific and precision
Trigonometry, logarithms, and precise multi-step evaluation for technical work.
Developers
Programmer calculator
64-bit conversion between Hex, Dec, Oct, and Bin, with bitwise logic operations.
Conversions
Units and currency
Distance, weight, temperature, speed, area, and volume, plus live rates across 25+ currencies.
Open the full calculator catalog
Age and time tools, BMI and health estimates, date math, and every specialized calculator in one directory.