Homework across math and physics classes needs quick, reliable calculators more often than step-by-step tutoring. Run a quiz check or a quick sum through the Basic Calculator's four-function keypad with correct order of operations, plot a z = f(x, y) formula as a rotatable 3D surface with the 3D Surface Plotter for a calculus assignment, or work out circular-motion problems with the Centripetal Acceleration calculator.
None of these show step-by-step working — they're built to return a fast, correct number or graph, not to solve or explain an equation for you. Everything runs in the browser tab itself, so there's no account to create and nothing typed gets sent to a server. Free for every homework session, exam week, and lab report.
3D Surface Plotter
Plot z=f(x,y) as a rotatable 3D surface — free, no signup
How 3D Surface Plotter works
Basic Calculator
Four-function calculator: correct order of operations, free
How Basic Calculator works
Centripetal Acceleration Calculator
Centripetal acceleration calculator: instant m/s² & g-force.
How Centripetal Acceleration Calculator worksEvery tool runs in your browser — no upload, no account, free.