Sumpad
A notepad that does the math as you type.
Write sums in plain words, like "3 hours at $85" or "120 USD in EUR", and the answer appears beside each line as you type.
SumpadType "Rent 1,850 + utilities 210" or "120 USD in EUR" and the answer appears in a column on the right, line by line. Words around the numbers are ignored, so a sheet reads like a note.
Name values and use them further down, refer to other lines, and add up a block with "total". Every sheet saves as you type, and a quick-calc popup is one shortcut away.
What it does
Plain-language math
Add, subtract, multiply, divide, powers, brackets and percentages, with words around the numbers. "20% off 80" is 64.
Variables and totals
Write "rate = 85" and use rate anywhere on the sheet. "total", "sum" and "average" work on the lines above.
Units and dates
Length, weight, volume, area, temperature, time, data and speed, converted with "in" or "to". Dates too: "today + 3 weeks", "days until Dec 25".
Currency
About 30 currencies with the European Central Bank's daily rates. Offline, Sumpad uses the last rates it has and shows their date.
Quick calc
Press Ctrl+Alt+C for a small calculator over whatever you're doing. It keeps your last scratch and can become a sheet.
Always saved
Every edit is saved the moment you make it. Sheets sit in a searchable list and reopen where you left off.
Copy, export, print
Click a result to copy it. Export a sheet as text or PDF, or print it.
Your number format
Numbers and dates follow your Windows region, so "1.850,50" works in Germany. You can pick another format.
Keyboard shortcuts
| Action | Default shortcut |
|---|---|
| Open quick calc | Ctrl+Alt+C |
Try it free, then decide
14 days, everything included
Download Sumpad and use all of it for 14 days. No account and no card needed.
After the trial: Quick calc stays fully editable. Your sheets open read-only, with results you can still copy and export. Editing sheets and making new ones need a license.
Pay once
A license is a one-time purchase for up to 3 of your PCs. It works offline once activated.