This scientific calculator works straight in your browser. No app download, no sign up, nothing to install, just visit our site and start using. Whether you’re a student solving trigonometry problems or just need quick logarithm and power calculations, this online scientific calculator handles it without any fuss.

What This Calculator Can Do

It’s not a basic four-function calculator. This one covers the functions you actually need for class 11, class 12, engineering entrance, and university-level problems.

Trigonometry — sin, cos, tan, and their inverses. Switch between DEG and RAD depending on what your problem needs. Most school and college problems in Nepal use degrees, but university-level work often switches to radians.

Logarithms — log (base 10) and ln (natural log). Second mode flips them to 10^x and e^x, which you’ll need a lot in calculus and physics.

Powers and roots — x² for square, x³ for cube, x^y for anything else. Square root and cube root buttons are there too.

Hyperbolic functions — sinh, cosh, tanh, plus their inverses via the 2nd key. These come up in engineering and advanced mathematics.

Factorials — n! for combinatorics and probability. Works up to 170.

Memory — MC, MR, M+, M− for storing values mid-calculation. The M indicator lights up in the display when memory is holding something.

How to Use This Scientific Calculator

DEG / RAD toggle Top right of the display. DEG means degrees, RAD means radians. Always check this before any trig calculation — wrong mode gives a completely wrong answer. For most school-level problems, keep it on DEG.

2nd key The 2nd button unlocks the second set of functions on the same keys. Press 2nd then sin to get arcsin (inverse sine). Press 2nd then log to get 10^x. Press 2nd then ln to get e^x. Press 2nd then sinh/cosh/tanh to get the inverse hyperbolic versions.

sin / cos / tan Type your angle value first, then press the function button. Example — to find sin(30), type 30 then press sin. In DEG mode that gives 0.5.

log and ln Press log or ln, then your number. log(100) gives 2. ln(1) gives 0.

x² and x³ Type your number first, then press x² or x³. Simple as that.

x^y (any power) Type the base number, press x^y, type the exponent, press equals. For 2^8 — type 2, press x^y, type 8, press =. Result is 256.

√ and ∛ Square root and cube root. For nested expressions, wrap in parentheses first. Example — √(9+16) — type √(9+16) and it evaluates the full expression inside before rooting.

1/x Reciprocal of whatever number is currently entered. Type your number, press 1/x.

n! (factorial) Type a non-negative whole number, press n!. So 5! gives 120, 10! gives 3628800. Works up to 170 — beyond that the numbers get too large to compute.

Memory buttons M+ adds the current displayed value to memory. M− subtracts it. MR recalls whatever is stored. MC clears memory. The M indicator at the top left of the display shows when memory is holding a value. Useful when you’re doing multi-step problems and need to store an intermediate result.

AC and backspace AC clears everything — the full expression and memory display. The backspace (⌫) button deletes just the last digit or character, so you don’t have to restart if you make a small typing error.

Keyboard shortcuts The entire calculator works with your keyboard too. Type digits normally, use + − * / for operations, ^ for powers, ( and ) for brackets, Enter for equals, Backspace to delete, and Escape to clear. Faster than clicking buttons once you get used to it.

Expression bar Just above the main display there’s a smaller expression bar that shows your full input as you type it. The large number below shows the live result updating as you enter. So you can always see both what you typed and what it’s computing.

Common Mistakes to Avoid

Wrong DEG/RAD mode is the most common one. If sin(90) is giving you something other than 1, you’re probably in RAD mode by mistake.

Forgetting parentheses on roots. If you want the square root of a whole expression, wrap it — √(expression) — not just √ followed by the first number.

Pressing equals in the middle of a power calculation before entering the exponent. With x^y, type base, press x^y, type exponent, then press =.

FAQs

Is this the same as a Casio scientific calculator? It covers the same core functions as a Casio fx-series — trig, log, powers, roots, hyperbolic, memory. For everyday calculations and student use it works just as well. For the physical Casio’s specific button layout or exam use where only approved calculators are allowed, you still need the actual device.

Can I use this on my phone? Yes. The calculator is fully responsive and works on mobile browsers. No app download needed — just open the page and use it.

Does it support complex numbers? Not currently. It handles real number calculations. For complex number operations you’d need a specialized tool.

Is it free? Completely free. No sign up, no account, no hidden anything.

What’s the difference between log and ln? log is base 10 — so log(1000) = 3 because 10³ = 1000. ln is natural log with base e (2.718…) — ln(e) = 1. Physics and calculus mostly use ln. General maths problems often use log.

Bookmark this scientific calculator page and skip the app download next time a calculation comes up. Everything is already here.