Calculators
Notepad calculator
Calculate as you type, line by line, like a notepad.
4
70
12.5
Sum of all lines: 86.5
How it works
1
Type your maths
Write calculations in plain text, one per line.
2
See running results
Each line is evaluated live, and you can reference earlier lines.
3
Keep working
Adjust any line and the results update — great for quick, multi-step sums.
Why use Notepad calculator
Show your working
Unlike a button calculator, every step stays visible, so you can see and edit how you got to the answer.
Build on earlier lines
Reference previous results to chain a calculation together without retyping numbers.
Runs entirely locally
Your figures are evaluated in the browser and never uploaded.
Frequent questions
How is this different from a normal calculator?
It works like a text document: you write several calculations line by line, all stay visible, and you can edit any line or reuse its result — ideal for estimates and multi-step maths.
Can one line use the answer from another?
Yes. Earlier results can feed into later lines, so you can build up a calculation step by step.
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