Escalator Capacity Calculator
Persons per hour from step width, speed, and loading.
About this calculator
Escalator throughput and escalator geometry are computed from almost entirely separate input sets. Practical Capacity (persons/hr) comes only from Step Width (persons per step: 1.0 at 600/800 mm, 1.5 at 1000 mm), Speed (m/s), and Step Utilization -- Vertical Rise and Incline Angle never enter the capacity formula at all, so a 5 m escalator and a 30 m escalator at the same step width, speed, and utilization carry identical persons-per-hour throughput. Vertical Rise (m), conversely, drives Slope Length, Horizontal Run, and Motor Power (through the number of visible steps and the vertical speed component) but has zero effect on capacity.
Speed (m/s) moves Practical Capacity directly and linearly across its full 0.3-0.75 m/s declared range (EN 115-1, the European construction-and-installation safety standard for escalators, treats 0.5 m/s as the standard operating speed and 0.65 m/s as the upper limit for public-use escalators, with some higher-speed allowances outside that scope), and Step Utilization (%) scales Practical Capacity by the same fraction, from 30% (light loading) up to 100% (crush load) -- both inputs move capacity steadily upward across their full range, with no cap or dip along the way. Incline Angle changes Slope Length (a shallower 27 deg angle needs more slope length for the same rise than a steeper 35 deg angle) and therefore the visible step count and motor power, but, like Rise, it never touches capacity.
Inputs
Results
Practical capacity (persons/hr)
4,725
Figures current as of 2017. Source: CEN, EN 115-1:2017, Safety of Escalators and Moving Walks — Construction and Installation
How to Use This Calculator
- Select Step Width from the dropdown (600 mm single file, 800 mm single + passing, or 1000 mm two abreast) based on the installation.
- Enter Speed (m/s) — typically 0.5 m/s for standard escalators.
- Set Vertical Rise (m) and Incline Angle (30 or 35 degrees).
- Enter Step Utilization (%) based on observed passenger loading patterns.
- Review Practical Capacity (persons/hr) vs. Theoretical Maximum to verify the escalator meets peak demand.
How the result changes with Speed (m/s)
| Speed (m/s) | Practical capacity (persons/hr) |
|---|---|
| 0.3 | 2,835 |
| 0.38 | 3,544 |
| 0.75 | 7,088 |
What each input means
- Step width
- Nominal step width, which sets persons-per-step for capacity calculations.
- Speed (m/s)
- Escalator travel speed (standard 0.5 m/s, max 0.65 m/s per EN 115).
- Vertical rise (m)
- Total vertical height from bottom to top landing.
- Incline angle (°)
- Escalator angle of inclination (30° standard, max 35° for rise < 6m).
- Step utilization (%)
- Fraction of steps occupied (60-80% typical, 100% = crush load).
What each result means
- Practical capacity (persons/hr)
- Realistic throughput at the specified utilization rate.
- Theoretical max (persons/hr)
- Maximum capacity if every step were occupied.
- Visible steps
- Number of steps visible on the incline.
- Total steps (including flat)
- Total step count including flat sections at top and bottom.
- Slope length (m)
- Total length along the incline from bottom to top.
- Horizontal run (m)
- Horizontal distance from pit edge to upper support.
- Motor power (kW)
- Estimated drive motor power requirement.
- Travel time (s)
- Time for a passenger to ride from bottom to top.
- Step width (mm)
- Nominal step width.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersStep width = 2, Speed (m/s) = 0.5, Vertical rise (m) = 5, Incline angle (°) = 30 = 5 input(s) provided
- Calculate Practical capacityPractical capacity = theoreticalCapacity * (utilizationPct / 100)4725 = 4725
- Calculate Theoretical maxTheoretical max = (pps * speed * 3600) / stepSpacing6750 = 6750
- Calculate Visible stepsVisible steps25 = 25
Figures and sources
- EN 115-1:2017 — Safety of escalators and moving walks (construction and installation speed/incline limits) (2017) — CEN, EN 115-1:2017, Safety of Escalators and Moving Walks — Construction and Installation
Engine last updated . Checked against 2 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Does a taller escalator (more vertical rise) carry more people per hour?
No -- Practical Capacity depends only on Step Width, Speed, and Step Utilization. Vertical Rise changes Slope Length, visible step count, and Motor Power, but a 5 m and a 30 m escalator running the same step width, speed, and utilization move people at exactly the same persons-per-hour rate.
What's the single biggest lever for increasing throughput?
Speed (m/s) and Step Utilization (%) both move Practical Capacity directly and proportionally across their full declared ranges -- doubling either roughly doubles capacity, holding the other fixed. Step Width matters too, but only at the 1000 mm (two-abreast) size, which carries 1.5 persons per step versus 1.0 for the narrower 600/800 mm widths; that's a fixed jump, not a continuous dial.
Why does changing the incline angle affect motor power but not capacity?
Incline Angle changes how much Slope Length is needed to cover a given Vertical Rise (a shallower angle needs more slope for the same rise), which changes the number of visible steps and therefore Motor Power. Capacity is a function of how fast steps present themselves at the top (Speed and Step Width), which doesn't depend on the incline angle at all. EN 115-1, the European standard governing escalator construction and installation, caps incline angle at 30° generally and allows up to 35° only for shorter rises (under roughly 6 m) -- which is why this calculator's Incline Angle input is bounded at 35°.
If I set Step Utilization to 100%, does that mean every step is always full?
100% represents a theoretical crush-load design case, not typical continuous operation -- it's the ceiling used to compute Theoretical Max, while real-world Practical Capacity should be evaluated at the utilization you actually expect (60-80% is the typical range cited in the calculator's guidance) since crush loading isn't a sustained condition.
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