03
SPLIT
Tip mode splits N ways
Restaurants. Group bills. The math the table needs.
What it actually does
02
FORMULA
Shows the math it ran
Every result reveals the formula behind it. Copy the formula straight into a spreadsheet.
04
PRIVATE
Inputs never logged
The numbers stay in your tab. Reload and they're gone.
How it works
- Open morph.cool/percentage-calculator. Default mode is "percent of."
- Tap a different mode tab if you need change, off, error, tip, or reverse.
- Type your two numbers. The result and the formula show as you go.
- Copy the result, copy the formula, or just read it. Close the tab when done.
- Need more than a calculator? The rest of Morph runs on your device too — free, with credits only for AI and server work.
6 modesIn one tab
0Upload
0msResult delay
Why one calculator beats six bookmarks
The standard pattern when you search for percentage math is to land on a different page for each question — one for percent off, one for percent change, one for tip. Each carries its own ad row, its own consent banner, its own attempt at your email. Morph fits the lot into a single tab with a mode toggle.
Frequently asked
What modes does it support?
Six. Percent of a number, percent change, percent off (sale price), percent error, tip calculator, and reverse percent (what number is X% of Y).
Does it handle decimals and negatives?
Yes. Any IEEE 754 double-precision number. The math runs in JavaScript locally.
Can I copy the result?
Yes — one-click copy on the result. The formula is also displayed so you can paste it into a sheet.
Where does my data go?
Nowhere. The calculation runs in your browser tab. No fetch, no submit, no analytics on the input fields.
Is it good for tax and tip math?
Yes — tip mode includes split-by-N people. Sale-price mode is the standard percent-off for shopping.
Mobile?
Yes. Mobile is the primary form factor for tip and discount math.
Nothing leaves your device · Free for what you make, credits for what we run