When to use it
Use it when advertised total area differs strongly from usable indoor area.
Area and layout
Balcony and sloped-ceiling calculator
Check outdoor areas, terraces, loggias and slopes separately as area shares.
Your space check
Result logic
- Areaseparate number and source
- Usabilitycheck furniture, paths and slopes
- Differencedo not trust listing copy blindly
More context
When you want to check deeper.
Read the inputs correctly
Terrace, loggia, winter garden and sloped ceiling become visible with separate shares.
Avoid this mistake
One percentage for all extra areas hides where the stated area comes from.
Next action
Carry the plausible area into living-area or cost-per-square-metre calculation.
Living area calculatorData and documents
- area statement
- photos
- room height
- outdoor area
Directly useful templates
Common questions
Does a balcony always count the same?
No. Outdoor areas are often read partially; concrete treatment remains a separate check.
Which assumption should stay visible?
Orientation for discussion and plausibility only; concrete assessment depends on rules and case.
What is the next useful step?
Carry the plausible area into living-area or cost-per-square-metre calculation.
Decision help
What Balcony and sloped-ceiling calculator really clarifies.
Use it when advertised total area differs strongly from usable indoor area. The important part is not to treat the output as one winning number. It is a plausibility value for viewing, acceptance, moving or household planning.
Terrace, loggia, winter garden and sloped ceiling become visible with separate shares. If an input is estimated, keep it visible. That way you later know which figure came from a contract, offer, measuring tape or bill and which was only a provisional assumption.
Check before deciding
- Terrace/balcony m²
- Terrace share %
- Loggia/winter garden m²
- Loggia share %
- Sloped ceiling m²
Keep these documents ready
- area statement
- photos
- room height
- outdoor area
Do not misread it
One percentage for all extra areas hides where the stated area comes from.
Carry the plausible area into living-area or cost-per-square-metre calculation. The next useful cross-check is Living area calculator, because it tests the same housing decision from a second angle.
Calculation path
Do not read the output in isolation.
Calculation path
Counted extra area = outdoor area × share + sloped area × share
Assumptions
Orientation for discussion and plausibility only; concrete assessment depends on rules and case.
Common misreadings
Treating all extra areas equally hides where the advertised area comes from.