Free tools
Free calculators for fleet operators
Quick, honest calculators for the numbers that decide whether a load makes money and a truck stays legal. No sign-up, nothing stored: your figures stay in your browser.
Calculators
Pick a tool
Each tool explains its method and sources, and every result can be shared as a link or printed.
Fleet cost per km calculator
Fixed and running costs for one truck, turned into cost per kilometre, cost per month and the rate you need for your target margin.
Learn moreN3 toll cost calculator
Durban to Johannesburg tolls for every vehicle class from SANRAL's tariffs effective 1 March 2026, plus any other plaza you add. Per trip, month and km.
Learn moreOverloading check
Enter axle masses and your permissible limits to see the percentage over or under on every axle, axle unit and the whole vehicle, plus payload headroom.
Learn moreRTMS readiness checklist
A printable SANS 1395 self-assessment: tick off each requirement area, see your progress and find the gaps before your RTMS audit.
Learn moreRelated guides
Stop estimating and start measuring
The calculators give you a fast estimate. T-ERP records every fuel fill, toll, job card, weighbridge ticket and trip, so the real figures are there per vehicle, every month. A 30-minute consultation shows you how.