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Window-to-Floor Ratio Calculator

Lifestyle Tools

GB 50096 1/7 daylight compliance

Quick Answer

Window-to-Floor Ratio Calculator: GB 50096 1/7 daylight compliance. Window-to-Floor Ratio Calculator uses standard everyday life formulas to compute accurate results instantly.

Room Parameters

Code minimum window area2.86 m²

How it works

  1. 1Code minimum = floor ÷ 7 = 20 ÷ 7 ≈ 2.86 m² (GB 50096-2011 cl. 7.1.5)
  2. 2No window area entered — showing code minimum only; enter it to check compliance
GB 50096-2011 cl. 7.1.5 (mandatory): bedroom, living room and kitchen window-to-floor ratio ≥ 1/7; GB 55015-2021 cl. 3.1.18 requires the same for main rooms. Openings below 0.5 m sill height do not count; head should sit ≥ 2 m. Stairwells ≥ 1/12. For comfort aim 1:4-1:6 in living rooms, 1:6-1:8 in bedrooms; bathrooms commonly 1/10. Add exterior shading on west-facing windows.

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How to Use

  1. Enter scenario values: fill real-life numbers into the Window-to-Floor Ratio Calculator (defaults work for a quick try).
  2. Instant results: everything computes live, no button needed.
  3. Read the advice: results come with practical tips, reference standards and pitfalls.
  4. Compare options: adjust parameters to compare choices side by side.

Key Points

  • Window-to-Floor Ratio Calculator is a free online everyday life tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: GB 50096 1/7 daylight compliance.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Window-to-Floor Ratio Calculator formula

Window-to-Floor Ratio Calculator uses standard everyday life formulas to compute accurate results instantly.

FAQ

How do I use the Window-to-Floor Ratio Calculator?
Open the page and fill in the input fields — results update automatically. GB 50096 1/7 daylight compliance.
Are the results accurate?
Yes. Standard formulas and conversion factors are used and verified.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on phones, tablets and desktops.
Is my data saved?
No. Everything runs locally in your browser.

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Source & Updates

Based on common formulas and industry conventions. Last updated: 2025-07

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Window-to-Floor Ratio Calculator[EB/OL]. https://www.yijiansuan.com/en/c/life/window-area

Results provided by this tool are for reference only and do not constitute professional advice.