Solve geometry essentials — areas, perimeters, volumes, angles — with diagrams described. Cover homework shapes in one tab — free, local, no signup.
Compute circle area and circumference from the radius — geometry homework solved. Enter r=5 and read both measures at once — free, local, no signup.
Compute distance, midpoint, and slope between coordinate points — geometry essentials. Get all three from two points — free, local, no signup.
Raise any base to any power — squares, cubes, negative and fractional exponents with full precision. Students check 2^10 = 1024 homework in seconds — free, no signup, runs locally.
Markdown toolbox with four converting tabs — Markdown to HTML source, plain text to Markdown, HTML to Markdown, and Markdown to plain text. Own every .md workflow in one tab — local processing, free, no signup.
Add text, highlights, drawings, shapes, notes, signatures, and images to any PDF. Rotate, duplicate, and OCR pages (8 languages), or use one-click AI to summarize, fix, or translate. Editing runs 100% locally. AI actions are optional and cost credits, shown on each button before you click. Free, no watermark — no signup needed to start, unlimited saves.
Triangles, rectangles, circles, cubes, cylinders, spheres — area, perimeter, and volume per shape with formulas shown.
Consistent input units yield squared/cubed outputs. Mixing cm and m silently corrupts — convert first.
Yes — formula with substituted values per calculation. Copy working into homework directly.
No — math runs locally in your browser. Numbers never leave your device.
π × 25 ≈ 78.54 square units. Enter any radius and the tool pairs area with circumference the same way.
Last updated October 2026