Scientific Calculator
Type a whole expression or tap the keys: trigonometry in degrees or radians, logarithms, powers and roots, factorials, combinations, with your history kept on screen.
Last updated
- Calculations appear here; click one to reuse it.
How to use the scientific calculator
- Type an expression such as
sin(30) + 2^10 / 3, or tap the keys. - Choose Deg or Rad for trigonometry.
- Press Enter (or =) for the answer; earlier answers are kept in the history, and
Ansuses the last one.
How to use it
Type an expression with your keyboard (Enter for =, Esc to clear) or tap the keys. The answer previews as you type. Brackets can be left open at the end, and multiplication can be implied: 2π, 3(4+1) and (1+2)(3+4) all work.
Functions: sin cos tan and their inverses asin acos atan (in degrees or radians, as set), sinh cosh tanh, sqrt (or √), cbrt, ln (natural log), log (base 10), log2, exp, abs, round floor ceil, nCr(n, r) and nPr(n, r). Operators: + − × ÷ ^, ! for factorial, % to divide by 100, and E for "times ten to the power" (6.02E23). Ans is the last answer; M+ adds the answer to memory and MR recalls it.
Order of operations follows the usual rules: brackets, then powers (right to left, so 2^3^2 = 2^9), then multiplication and division, then addition and subtraction. A minus sign in front applies after powers, so −2² = −4, as on a scientific calculator. Results are shown to 12 significant figures, so floating-point noise is hidden (0.1 + 0.2 shows 0.3, and sin(180°) shows 0). Everything is worked out in your browser.
Questions about the scientific calculator
Why does sin(30) not give 0.5?
Your calculator is probably in radians. Choose Deg for angles in degrees, where sin(30) = 0.5.
What is the order of operations?
Brackets, then powers, then multiplication and division, then addition and subtraction. Powers work right to left, so 2^3^2 = 2^9 = 512.
Why is −2² equal to −4?
The power is worked out before the minus sign, as on scientific calculators and in maths. Type (-2)^2 to get 4.
What is the difference between log and ln?
log is the logarithm to base 10 (log 1000 = 3); ln is the natural logarithm, to base e (ln e = 1). log2 is base 2.
Can I type numbers in scientific notation?
Yes. Use E for “times ten to the power”: 6.02E23 is 6.02 × 10²³.