ThinkQuarry / Free online tools
Useful tools. Clear answers.
Simple tools for learning and everyday tasks. Start with our algebra solver to work through an equation and understand every step.
Math Tools
Algebra Solver
Solve linear and quadratic equations with step-by-step working. Includes brackets, fractions, decimal coefficients and complex roots.
Open Algebra SolverSlope Calculator
Find slope from points or equations, compare parallel and perpendicular lines, and convert angles and grade. Includes exact fractions, worked steps and an interactive graph.
Open Slope CalculatorImage Tools
Free Image Resizer & Compressor
Use our free image resizer to change photo dimensions in pixels, compress JPG, PNG and WebP images, and convert formats. Compare output sizes before downloading.
Open Image ResizerFor practical file workflows, explore our Digital Essentials guides.
More useful tools will be added here as they become available.