Alkota Trailers
Engineering Educational Tool

TRAILER PAYLOAD &
MAM WEIGHT CALCULATOR.

1,000 litres of water weighs exactly 1,000 kilograms (one metric tonne). Understanding your Maximum Authorised Mass (MAM), unladen tare, and water mass is critical to legal UK road transport.

Quick Chassis Presets:

Input Trailer Mass & Capacities

2,700 kg
1,000kg (Compact)2,700kg (Standard Tandem)3,500kg (UK Legal Max)
950 kg
1,000 Litres (1,000 kg)
0L (Mains-Fed)1,000L (1 Tonne)2,000L (2 Tonnes)
~70kg for 80L diesel
~150kg for dual reels + vaults

Tow Vehicle Braked Capacity Check

kg vehicle braked towing limit
✓ Vehicle capacity (3500kg) meets or exceeds trailer MAM (2700kg).
Calculated Total Wet Weight
2,170 kg
Utilization: 80%530kg PAYLOAD MARGIN
Unladen Chassis & Skid:950 kg
Water Payload (1000L):+1,000 kg
Fuel Mass:+70 kg
Accessories / Vaults:+150 kg
Chassis MAM Limit:2,700 kg
Configure Rig in Builder
Engineering Note: This calculator provides preliminary estimates for educational planning. Exact axle load distribution, tongue weight, and Type Approval validation are confirmed during our formal Alkota UK engineering sign-off.