Engineering & Technical Tools

Free engineering and technical calculators for physics, algebra, geometry, chemistry, construction, graphing and mathematical problem solving.

Featured Tool: 3D Graph Calculator

Explore mathematical models and topological surfaces visually. Use our 3D Graph Calculator to interactively graph multivariable functions directly in your browser.

GRAPHING

3D Surface Plotter

Advanced 3D surface plotter for z=f(x,y) functions with interactive Orbit Camera and Wireframe Mode.

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SCIENCE

Scientific Calculator

Advanced computational tool for complex engineering math.

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ALGEBRA

Matrix Calculator

Matrix arithmetic and algebraic transformations.

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GRAPHING

Interactive Graphing Calculator

High-precision 2D function plotter with multi-expression support and real-time rendering.

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ALGEBRA

Linear Equations Solver

Solve simultaneous linear equation systems.

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ALGEBRA

Quadratic Solver

Solve second degree polynomial equations.

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PHYSICS

Physics Force Calculator

Calculate physical force (F=ma).

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PHYSICS

Energy Calculator

Calculate kinetic and potential energy values.

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CHEMISTRY

Molar Mass Calculator

Compute molar mass of molecular compounds.

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GEOMETRY

3D Geometry

Calculate surface area and volume of 3D objects.

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CIVIL

Concrete Mixer

Calculate concrete volume and proportions.

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CIVIL

Brick Calculator

Estimate physical brick count for construction.

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REFERENCE

Mathematical Formula Library

Comprehensive library of math and engineering formulas.

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GEOMETRY

Geometry Canvas Lab

Interactive geometric construction and measurement tool.

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About Engineering Tools

NepaCalc provides engineering and technical calculators for students, educators and practitioners. Tools cover physics, algebra, geometry, chemistry, construction estimation and graphing. Results are computational estimates and should not replace project-specific engineering analysis, professional judgment or applicable safety standards where these are required.