Full-featured scientific calculator with trig, logarithms, exponents, roots, and memory. Free, no signup, works offline.
Scientific calculator provides advanced mathematical functions beyond basic arithmetic.
Available Functions:
Usage Tips:
This calculator supports basic scientific functions. For more advanced calculations, consider specialized mathematical software.
Enter a math expression using standard notation: sin(30), log(100), 2^10, sqrt(144), or complex combinations like (5+3)*sqrt(9).
Switch between degrees and radians. Access trig (sin/cos/tan), inverse trig, logs (log/ln), exponents, roots, factorials, and constants like pi and e.
The current answer shows at the top. Scroll down for a running history of every calculation in the session so you can audit and reuse intermediate values.
For related calculations, try our fraction calculator.
Cross-checked against authoritative formulas (IRS, NIST, ACM) and updated for 2025/2026 tax years and rates.
No server roundtrip. All math runs in your browser so results appear the moment you finish typing.
We never collect, store, or transmit your inputs. Every calculation runs locally in your browser.
Each calculator includes the formula, plain-English explanation, and FAQs so you understand the result.
Estimates only. Calculator results are for educational and planning purposes — not professional advice. For binding decisions on taxes, investments, health, or legal matters, consult a qualified professional.
FAQ
Everything you need to know about this calculator. Can't find what you're looking for? Email our team.
Type the angle first, then press the sin, cos, or tan button. Make sure the calculator is in DEG mode for degrees or RAD for radians. sin(30°) = 0.5, cos(60°) = 0.5, tan(45°) = 1. Our scientific calculator supports both modes and the inverse functions (asin, acos, atan) for finding angles from ratios.
How it works
Access trigonometry, logarithms, exponents, and memory functions in a standard scientific calculator layout.
Type a number or expression using the on-screen keys. You can use parentheses, the pi and e constants, and the standard functions.
Toggle between DEG (degrees) and RAD (radians) as needed for trigonometry. Most everyday math uses degrees.
Tap a function key like sin, cos, log, ln, sqrt, or x^y to apply it to the current entry or to a sub-expression in parentheses.
Press equals to evaluate. The result appears in the display, ready to be used in the next calculation.
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