Other important measurements:
1) Ceiling Height : Height from floor to ceiling.
2) Door Height: Height from floor to top of the door trim.
3) Floor to Sill: Height from the floor to the bottom of the window sill trim.
4) Sill to Trim: Height from the bottom of the window sill trim to the top of window sill trim.

Click here for a printable grid

Measure in Millimeters

ROOM DIMENSIONS

Measure all the walls beginning at a door and working your way around the room. Working clockwise and measuring all angles, break, openings, etc., will ensure that you measure the entire room.

Use a carpenter's framing square in each corner to determine if walls are at a 90 -degree angle. If not available note any walls that are not 90-degrees.

Mark what is beyond each wall, such as a closet, bedroom, outside, etc.

Important Measuring hints

Make sure the tape measure is taut. Do not let it sag or hold it askew. This will cause your measurements to be off.

If you work with a partner only one person should read the measurements. Don't trade ends of the ruler during the process.

Make sure that there is no dirt or foreign matter under the tape - this can throw off the measurements.

When measuring object to object (such as wall to wall) take many measurements at different locations in the area and use the smallest measurement taken.

After measuring and noting all the individual wall items (i.e. doors, windows, and wall space between) measure the entire wall and note the overall length. If you add all your smaller wall measurements and they total different from the overall wall dimension - you need to remeasure.

Check all measurements at least twice yourself and ask someone else to check them too.