Room-by-Room Paint Planner
Measure every room in one pass, then work out the paint before you get to the store. The assumptions below are the same ones the calculator uses.
BFCBrilliance · bfcbrilliance.com/tools/paint-calculator
Project
- Project / address
- Date
- Paint brand
- Colour
- Sheen
- Budget
Measure each room
| Room | Length (ft) | Width (ft) | Wall height (ft) | Doors / windows | Gallons |
|---|---|---|---|---|---|
What the calculator assumes
- Coverage per gallon
- 350 sq ft
- Area deducted per door
- 21 sq ft
- Area deducted per window
- 15 sq ft
- Wall area
- 2 x (length + width) x height
- Default coats
- 2
Before you open a tin
- Measure each room and write it in the table above
- Check the coverage figure on the tin - it is not always 350 sq ft
- Fill and sand any holes, then wipe the dust off
- Wash greasy or smoky walls and let them dry fully
- Mask the trim, sockets and switch plates
- Lay drop cloths over the floor and anything left in the room
- Prime bare filler, patches and any big colour change
Shopping list
- Paint - total gallons from the table, rounded up
- Primer if you are covering filler or changing colour
- Roller frame, sleeves and an extension pole
- Angled brush for cutting in
- Painter’s tape
- Drop cloths
- Filler and sandpaper
- Tray and liners
- Stir stick and a tin opener
Always round up
Buy the next whole tin rather than the exact figure. A part-used tin is touch-up paint; running half a wall short means a second trip and a batch that may not match.