Kalkulator Tangga

Design stairs, calculate riser height, tread depth, stringer length, angle, and check building code compliance. 3 calculation modes with step-by-step solutions.

Menghitung

Total vertical height from floor to floor

Khas: 6,5–7,5 inci (kode: 4–7,75)

Select a calculation type, enter your measurements, and click Calculate to see stair dimensions, stringer length, and code compliance with step-by-step solutions.

Panduan Pengguna Lengkap

What is the Stair Calculator?

The Stair Calculator helps you design safe, code-compliant stairs. Enter the total rise (floor-to-floor height), and it calculates the number of risers, riser height, tread depth, total run, stringer length, and angle — all checked against building codes (IRC/IBC).

3 Calculation Modes

Design

Kenaikan total → anak tangga, tinggi anak tangga, tapak, lari, stringer.

Riser & Tread

Diberikan R, T, n → kenaikan total, lari, stringer.

stringer

Bangkit + lari → panjang stringer, sudut.

Standar Kode Bangunan

Parameter Jangkauan Ideal
Tinggi Bangkit4–7.75"7"
Kedalaman Tapak10–14"11"
2R + T Formula24–25"24.5"
Max Rise di antara pendaratan12 ft

Terminologi Tangga

📏 Anak tangga — vertical face of the step

🦶 Tapak — horizontal surface you step on

📐 stringer — balok penyangga diagonal di bawah tangga

⬆️ Kenaikan Total — floor-to-floor vertical height

➡️ Lari Total — horizontal distance from top to bottom

Dimensi Umum

🏠 Residential: 7" riser, 11" tread (2R+T = 25)

🏢 Commercial: 6.5" riser, 12" tread (2R+T = 25)

🪜 Steep: 7.5" riser, 10" tread (2R+T = 25)

🚶 Gentle: 6" riser, 13" tread (2R+T = 25)

Catatan Penting

  • All risers must be uniform height (max ⅜" variation).
  • Periksa peraturan bangunan setempat — persyaratannya berbeda-beda di setiap yurisdiksi.
  • Jarak bebas ruang kepala minimum: 6 kaki 8 inci (80 inci).
  • Pegangan tangan diperlukan di setidaknya satu sisi untuk 4+ anak tangga.

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