FREE CONVEYOR DESIGN CALCULATORS
Quick checks for everyday conveyor design
Browser-based engineering calculators for selecting and sizing belt conveyors. All formulas follow CEMA, DIN 22101, and ISO 5048 methodology. Every input accepts metric or imperial units; every result is shown in both. No sign-up, no email gate.
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Belt Length Calculator
Geometric belt length around two pulleys, with optional incline correction. For sizing replacement belts and splice planning.
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Belt Tension Calculator
Effective tension Te, drive power, and T1 / T2 from the CEMA simplified formula and Eytelwein capstan equation. For motor and belt strength selection.
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Belt Speed Calculator
Belt linear speed from drum diameter and RPM, with drive-train helper for motor + gearbox. Includes industry typical-speed reference.
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Belt Capacity Calculator
Mass and volumetric throughput from belt width, speed, density, trough and surcharge angles. CEMA equivalent-area method with 15-material density reference.
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Pulley Diameter Calculator
Minimum drum diameters for drive, bend, and snub pulleys per DIN 22101. Supports fabric (EP) and steel-cord (ST) belt classes with full utilization-group matrix.
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Belt Sag Calculator
Belt sag and percentage between idlers from idler spacing, belt mass, material loading and tension. Built-in PASS / CAUTION / EXCESSIVE verdict.
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Incline Angle Calculator
Conveyor incline from lift and length, plus belt-type recommendation (smooth, cleated, or sidewall) for 20 bulk materials with CEMA-aligned angle limits.
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Motor Power Calculator
Drive motor sizing from capacity, length, lift and belt speed. Returns Te, mechanical power, shaft power, and the next standard IEC motor size.
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CEMA Idler Class Selector
CEMA idler class (A–E) and roll diameter from belt width, speed, material density, and lump size. Auto-bumps class for high speed or large lumps.
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Belt Width Calculator
Minimum and recommended standard belt width from required capacity, speed, density and trough geometry. CEMA equivalent-area method.
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Bulk Material Properties Reference
Searchable reference for density, angle of repose, surcharge angle and abrasiveness across 40 bulk materials. Filter by abrasiveness class.
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About these calculators
Each calculator implements an industry-standard formula in transparent JavaScript that runs entirely in your browser — no server round-trip, no input logging, no commercial data exposed. The formula and assumptions are documented next to every result so you can verify the math.
Defaults reflect real conveyor design: a 1000 mm head pulley driven through a 25:1 gearbox, 50 Hz motor at 1500 RPM, 100 m centre distance, 800 t/h capacity. Adjust inputs as your installation requires.
Accuracy targets ±10 % for steady-state design. Long overland conveyors, low-temperature service, dynamic start-up analysis, and any DIN 22101 / ISO 5048 deliverable still require a full engineering review.
Coming next
More calculators in development. Drop us a note if you need a specific tool ahead of release.
- Take-up travel calculator (counterweight and gravity take-up sizing)
- Skirt board length calculator (acceleration distance for material settling)
- Belt drift calculator (off-centre tracking from load and idler tilt)
Need more than these calculators can give you?
These tools cover quick design checks. For full DIN 22101 / ISO 5048 verification, dynamic start-up analysis, multi-flight conveyor profiles, or any installation longer than 100 m or steeper than 18°, talk to a BisonConvey engineer.
Talk to an engineer