Stair dimensions: step height and step depth for comfort

Customer asks:

What is the recommended stair step height and depth to ensure comfortable movement on stairs?

Stair24 answers:

Stair dimensions, including step height and step depth, are crucial in designing and building any home. These two measurements are the most important factors affecting stair comfort and safety. Correct stair dimensions, step height, and step depth ensure smooth movement, reduce tripping risk, and make the stairs comfortable for people of all ages.

Recommended step height:

General standards and practical experience show that the most comfortable rise is:

• 160–190 mm – suitable for adults and most commonly used.
• 170–175 mm – considered especially comfortable for daily use.

Too high steps (over 200 mm) make stairs tiring; too low steps take up space and may disrupt rhythm.

Recommended step depth:

The tread depth must allow a stable placement of the foot. Ideal depth:

• 250–300 mm, with 270–290 mm being most comfortable.

Too narrow steps can cause tripping; too deep steps disturb natural walking rhythm.

Formula for a comfortable staircase:

The widely used stair formula: 2 × rise + tread = 630 mm
If the result is 600–640 mm, the stair rhythm aligns with natural walking.

Remember when designing stairs:

• All steps should be identical, max deviation ±5 mm.
• Stair incline should be 30–40°.

🪜 Stair comfort starts with the right dimensions

Comfort and safety are the most important aspects when planning stairs. Correct step height and depth ensure smooth movement and reduce tripping risk.

🔹 Step height

• 160–190 mm – suitable for adults
• 170–175 mm – especially comfortable for daily use

⚠️ Too high steps are tiring, too low steps take up space and disrupt the rhythm.

🔹 Step depth

• 250–300 mm, most comfortable 270–290 mm

👣 Foot must be stable on the step. Narrow steps can cause tripping; deep steps disrupt natural rhythm.

🔹 Stair formula for smooth movement

2 × step height + step depth ≈ 630 mm (range 600–640 mm)

✅ Ensures natural rhythm

🔹 Extra tips for safe stairs

• All steps should be uniform (max deviation ±5 mm)
• Stair incline: 30–40°
• Add handrails and sufficient lighting

💡 Tip: For children or elderly users, make steps slightly lower and deeper for stability.

Correct stair dimensions make movement smooth and comfortable – every step is enjoyable!

Read also: 5 Tips for Choosing Stairs

If you need stairs, trust Stair24’s recommendations. Build your own stairs in the Stair24 configurator today, generating price, delivery time, and comfort data based on your measurements. For further help, contact sales@stair24.com