Scientific Calculator
A keypad scientific calculator with DEG/RAD modes, memory, powers, roots, factorials and full expression history.
History
Evaluated expressions appear here so you can reuse a previous answer.
How the scientific calculation works
This calculator parses whole expressions rather than just chaining buttons, so operator precedence is respected: 2 + 3 × 4 gives 14, and brackets override it as you would expect.
Trigonometric functions work in degrees or radians — check the mode indicator before using them. Switching mode does not change what is already on screen; press AC to start again.
It also accepts typed input, so you can enter sin(30) + log(100) directly if you prefer the keyboard to the keypad.
Worked example
Evaluate (12 + 8) ÷ 5 + 3².
- →12 + 8 = 20
- →20 ÷ 5 = 4
- →3² = 9
- →4 + 9
Answer: 13.
Scientific FAQs
How do I use degrees instead of radians?
Tap DEG/RAD to switch modes. DEG is the default because most school and everyday trigonometry uses it, and the current mode is always shown.
What does the ×10ˣ key do?
It multiplies the current value by ten to the power you enter next, which is shorthand for scientific notation. For 4.2 × 10⁶, type 4.2, then ×10ˣ, then 6.
Can I use the keyboard?
Yes. Type numbers and operators directly, then press Enter to evaluate. Backspace deletes the last character.
Scientific Calculator is part of the math calculators collection on Calcora, alongside 7 other tools. Results are calculated in your browser and are for information only — see our disclaimer.
You might also like
More tools from the same collection, picked for what people usually calculate next.