Are these engineering tools accurate enough for real design?

These tools are designed for fast technical estimation. Final design values should always be verified with OEM data and national regulations.

Can I use these converters for axle design?

Yes, converters help with unit matching, but axle load calculations should be supported with weight distribution analysis.

Are more tools going to be added?

Yes. Kingpin load, ramp angle, and turning radius calculators are planned.

Engineering Tools for Trailer & Truck Designers

Professional engineering tools for trailer and truck designers — mm ⇄ inch converter, bar ⇄ psi converter, axle load calculator, and center of gravity estimator.

🚀 Quick Start

Select a tool below to begin your calculation. Engineers typically start with:

🛞 Axle Load Calculator (most used)
🔧 Kingpin Load Estimator
🧯 PSI ↔ Bar Converter
🎯 Center of Gravity Estimator

Start with Axle Load →

🛞 Axle Load Calculator

Total Payload (kg) Trailer Tare Weight (kg) Number of Axles

* Simple equal load distribution estimation.

🧯 Bar ⇄ Psi Converter

Value Conversion Type

* Useful for tyre pressure, brake chambers and air systems.

📏 mm ⇄ inch Converter

Value Conversion Type

* Ideal for beams, bolts, axles and kingpin height conversions.

🎯 Center of Gravity (COG) Height Estimator

Payload Weight (kg) Payload Height (mm) Trailer Empty COG Height (mm)

* Higher COG increases rollover risk in tankers & tippers.

⛰️ Ramp Angle Calculator (Lowbed Equipment Loading)

Bed Height (mm) Ramp Length (mm)

* Used for loading excavators, dozers, loaders safely.

🔧 Kingpin Load Estimator

Total Trailer Weight (kg) Distance: Kingpin → Axles Center (mm)

* Helps check truck–trailer matching.

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⭐ Bookmark These Tools

Truck fleets, engineers and transport companies use these tools daily. Keep this page saved for fast access.

Press CTRL + D (Windows) or CMD + D (Mac) to bookmark.

⬛ Departure Angle Calculator

🛞 Load Per Tire Calculator

🔩 Kingpin Load Estimator

🌀 Trailer Turning Radius Estimator

🧱 Suspension Stroke Safety

🎯 Payload Distribution Calculator

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