Scientific Calculator
Type an expression or tap the keys. Results update as you type; press = or Enter to keep them in history.
Scientific Calculator by TheCalcTools
How the Scientific Calculator works
Type a full expression such as 2(3+4)^2 or sin(30)+ln(10), or tap the keys. A preview of the answer appears as you type; press = or Enter to calculate it and add it to the history. Tap a history line to reuse it.
The calculator follows standard order of operations: brackets, powers and roots, multiplication and division (including implied multiplication like 2π), then addition and subtraction. Powers are right-associative, so 2^3^2 is 2^9, and −2^2 is −4.
Use the deg/rad key to switch the angle unit for sin, cos and tan. The 2nd key swaps in the inverse functions (sin⁻¹, cos⁻¹, tan⁻¹), eˣ, 10ˣ, the cube root and x³. Ans inserts the previous result, EXP enters powers of ten (2E6 = 2,000,000) and % divides by 100.
The formula
Worked example
Typing 2(3+4)^2 − sqrt(16) gives 2 × 49 − 4 = 94. In degree mode, sin(30)+cos(60) = 1, and 5!/3! = 20.
Frequently asked questions
How do I calculate a percentage of a number?
Type 15%*80 (or 80*15%) to get 12. The % sign divides the number before it by 100.
Why does sin(30) give 0.5 here but −0.988 on another calculator?
The other calculator is in radians. This calculator starts in degrees; tap deg to switch to radians.
Is my input sent anywhere?
No. Every calculation runs in your browser.
Sources and further reading
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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.