A sleek, minimal-but-powerful notepad calculator which evaluates expressions as you type. It combines the flexibility of a text editor with the power of a scientific calculator.
Available for:
and on the web at https://numara.io
Traditional calculators slow you down with buttons, modes, and rigid workflows. Numara takes a different approach: it treats math like writing. By combining a simple text-entry interface with real-time evaluation, Numara offers a faster, more natural way to calculate.
Whether you're jotting down quick arithmetic, testing formulas, or mixing notes with numbers, Numara keeps you in the flow.
📝 Notepad-Style Interface
- Write expressions as plain text, minimal interface with no buttons or rigid UI to slow you down.
- Mix notes and calculations freely, perfect for jotting down ideas alongside math.
- Change a value and the result updates instantly.
⚡ Real-Time Evaluation
- Results appear as you type, no equals button needed.
- Automatically recalculates when expressions change.
- Enables quick experimentation and iterative problem-solving.
🔢 Advanced Math with Math.js, giving you a wide range of capabilities:
- Scientific functions (trig, logs, exponentials, statistics, etc.).
- Unit handling and conversions (5 cm + 2 in, 1 hour to minutes, etc.).
- Complex and symbolic expressions including percentage operations (10% of 20, 40 + 5%, etc)
- Currency handling using symbols like $, €, £.
- Built-in constants and rich numerical operations.
- And much more...
📈 Function Plotting
- Plot mathematical functions directly within Numara.
- Useful for visualizing equations, exploring parameter changes, or checking how expressions behave.
🔓 Open Source
- MIT-licensed.
- Unlimited and free to use.
Visit the Wiki page to learn more about the features.