This calculator scales a paint tint formula from one can size to another. Here's what everything on screen does.
🔽 The three dropdowns
From — the can size the formula was originally written for.
To — the can size you want it scaled to.
Base — White 1, Medium 2, or Deep 3. Required, since it's used to double-check your total tint amount isn't unusually high for that size can.
🎨 Entering the formula
Pick a color code from each row's dropdown, then enter its amount in ounces, drops, or both (1 oz = 384 drops). Leave a row blank to skip it.
📁 File Management
Opens the full list of formulas you've saved. Tap a formula's name to load it; each row also has Export (download just that one), Clone (duplicate it), Rename, and Del.
Use the search bar and tag filter at the top to narrow the list, and Sort to reorder it (A→Z, Z→A, or by tag).
At the bottom: Export Tint downloads every formula you have, Export Tag downloads just the ones matching your tag filter, Backup All downloads everything including custom tints (good to run before clearing browser data), and Import loads formulas back in from a file.
🔘 The main buttons
New — clears everything on screen so you can start a fresh formula.
Save — saves exactly what's currently in the table, under a name you choose.
Calculate — scales the formula from the From size to the To size and shows you the result.
✅ After you calculate
You'll see the scaled amounts for each color. From there you can Save the result, Resize to try a different size, Print a clean copy, or go Home to start over.
🎨 Tint Manager
Opened from the Tint button, top-right. The Active Tint dropdown at the top switches which paint line's color codes you're using — this also switches which saved formulas you see, since they're tied to whichever tint was active when saved.
To add a store or paint line that isn't already listed, use Add New Tint: enter its Name (e.g. "Sherwin-Williams"), pick how many Color Codes it uses (10/12/14/16), then type in each code by hand. Tap Save Tint when done.
Any tint you've added shows up in a list below with Edit and Delete — Edit reopens the same form to change its name or codes; deleting a tint doesn't delete formulas saved under it, they're just hidden until you recreate it.
🖌️ Theme
Theme (top-right) — switch between light and dark mode.