CalcPro is a free advanced scientific calculator that runs entirely in your browser — no download, no login, no ads (unless you support us). It handles everything from basic arithmetic to calculus, matrices, complex numbers, and statistical analysis.
CalcPro is a free trigonometry calculator online that computes sin, cos, tan and their inverse functions instantly. Switch between degrees and radians with one click. Used by students, engineers, and teachers worldwide.
Our online scientific calculator works directly in your browser — no app, no download, no login. It supports all functions found on a Casio FX or Texas Instruments calculator, plus advanced features like matrix operations and calculus.
CalcPro's matrix calculator supports 3×3 matrices with addition, subtraction, multiplication, determinant, inverse, and transpose — all computed instantly in your browser.
| Operation | What it computes | Size supported |
|---|---|---|
| Matrix Addition A+B | Element-wise sum | Up to 3×3 |
| Matrix Multiplication A×B | Row × column dot products | Up to 3×3 |
| Determinant det(A) | Scalar value, checks invertibility | Up to 3×3 |
| Inverse A⁻¹ | Matrix that satisfies A×A⁻¹=I | Up to 3×3 |
| Transpose Aᵀ | Rows become columns | Up to 3×3 |
Enter a list of numbers and instantly compute: mean (average), median, mode, standard deviation, variance, minimum, maximum, Σx, and Σx². Perfect for students doing data analysis or statistics homework.
Add, subtract, multiply and divide complex numbers in the form a+bi. Also compute modulus |z|, argument arg(z), conjugate, and polar form conversion.
CalcPro includes a numerical calculus calculator:
x^2 + 3*x + sin(x)Solve equations instantly:
Compute dot product, cross product, vector magnitude, unit vector, and angle between vectors for 2D and 3D vectors.
Open CalcPro → click "Scientific" tab → press sin(, cos(, or tan( button → enter the angle → press = . Make sure DEG/RAD mode is set correctly using the toggle in the top right.
Click the "Equations" tab → select "Quadratic ax²+bx+c=0" → enter values of a, b, c → press SOLVE. The calculator shows both roots, including complex roots when discriminant is negative.
Click "Matrix" tab → enter values in Matrix A → press det(A) button. Works for up to 3×3 matrices instantly.
CalcPro is one of the most complete free scientific calculators available online. It covers arithmetic, trigonometry, logarithms, powers, roots, statistics, matrices, vectors, complex numbers, calculus, and equation solving — all in one page, no download needed.
Click "Statistics" tab → enter comma-separated numbers (e.g. 4, 7, 2, 9) → press σ (std) button. Also available: mean, median, variance, min, max in one click.
Use the Unit Converter in the sidebar: enter degrees → the radian value auto-updates. Formula: radians = degrees × π / 180.
Yes, CalcPro is completely free. No account, no download, no subscription. Works on mobile and desktop browsers.