ZovaTool

Scientific Calculator

DEG • AUTO • P6ANS = 0
 
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How to use the Scientific Calculator

  1. Type your expression directly or tap the keys — e.g. 2*sin(30)+log(100).
  2. Switch DEG / RAD / GRAD at the top for the angle unit used by trig functions.
  3. Tap SHIFT to access inverse functions (sin → asin) and HYP for hyperbolic (sin → sinh).
  4. Use π, e, ans, EXP and ^ for constants and powers. Press = to evaluate.
  5. Multi-argument functions use commas: ncr(5,2), logb(2,8), nthroot(3,27), mod(10,3).
  6. Choose result format: AUTO, SCI (scientific), ENG (engineering), FIX (fixed decimals) or FRAC (fraction).
  7. The display also shows the result as a fraction, scientific, hex and binary side-by-side.
  8. Memory keys: MS store, MR recall, M+ add, M− subtract, MC clear.
  9. Tap any previous History entry to reload it into the editor.
  10. Keyboard works too: digits, + − * / ( ) ^, Enter for =, Backspace to delete, Esc to clear.
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A modern scientific calculator in your browser

This scientific calculator handles everything a school or engineering scientific does — trigonometric, inverse trig, hyperbolic, logarithms with arbitrary base, powers, roots, factorial, permutations and combinations, gcd / lcm / mod, and constants like π, e and the golden ratio φ.

Angle units matter. sin(30) is 0.5 in degrees but −0.988 in radians. Use the DEG / RAD / GRAD toggle at the top — the active mode is always shown above the result so you never get caught out.

Results are shown four ways at once: the chosen display mode, a fraction approximation, scientific notation, and hex/binary for integer results. This is helpful when checking calculations in physics, electronics and programming contexts.

Use the ans variable to chain calculations. After a result, just type +5 or *2 — the previous answer is automatically inserted. The History panel keeps the last 30 expressions; tap any to re-edit it.

Tip: x/y style fractions come from the FRAC mode or the dedicated fraction readout under the result. The engine uses continued fractions to find the closest rational approximation up to a denominator of 10,000.