Math Tools
Where numbers
take shape.
Calculators, times tables, formula references, and number facts — plus twenty interactive curves you can actually drag, and a REST API behind almost all of it.
A live Lissajous curve — drag it yourself on its own page →
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Play with it
Curves
Drag a curve and watch the math move
20 interactive curves — spirals, roulettes, and space-filling fractals — rendered live and built to be pulled apart.
Numbers API
Every number tool, as JSON
Number theory, numeral systems, cardinal/ordinal spelling, base conversion, and more — authenticated with a personal access token.
MCP Server
Every tool, callable by an AI agent
The same number-theory and equation-rendering tools, exposed via the Model Context Protocol — free to discover, token-gated to call.
Every reference
Calculators
Basic, scientific, matrix, interest, trigonometric, and more.
Tables
Multiplication, addition, logarithm, and base-N tables.
Formulas
8 subjects, from algebra to financial math.
Numbers
Prime checks, factor trees, numeral converters, digits of pi.
Flash Cards
Practice 4 arithmetic operations.
Try it now — Basic Calculator
Built for
- Teachers
- Printable tables and worksheets ready for the classroom.
- Parents
- Homework help that shows the work, not just the answer.
- Students
- Practice with flash cards, then check it with a calculator.
- Math enthusiasts
- Curves to drag, formulas to reference, and an API to build on.
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