Calculation
Calculator
Type or click a calculation. Lengths go in as feet, inches and fractions (12' 6-3/8"), and answers come back the same way.
Answer
0
Fractions to the nearest
Type ' for feet and " for inches: 12' 6-3/8", 6 3/8", 3/8". A plain number added to a length counts as inches. 12' x 10' gives square feet. Angles are in degrees. Enter works it out; Esc clears.
Tape
Drafting Helpers
Hip/valley lengths are for an equal-pitch roof, from the common rafter's run. Lengths don't include overhang or ridge allowances. Click any result to copy it.
Fill in any two (a side and another side or the angle); the rest is worked out. Click any result to copy it.
Length
Area