Run the session
Independent timing for several cars or activities.
Open stopwatch →Free motorsport utilities
MRI Motorsport Toolbox.
Practical tools for the paddock, workshop and office.Use them instantly in your browser—no download, no unknown software and no payment. These first tools are free while MRI measures what the industry finds useful.
Train the driver
A quick reaction test with a device-local best.
Open reaction test →Plan the race
Fuel, reserve, stint length and minimum stops.
Open calculator →01
Timing
Multi stopwatch
Time four cars, drivers or activities independently from one screen.02
Driver training
Reaction-time test
Wait for green, then press as quickly as possible. Your best result stays on this device.03
Race planning
Fuel & stint calculator
Estimate total fuel, maximum laps per tank and the minimum number of fuel stops.Planned race laps40
Fuel including reserve100.8 L
Maximum stint18 laps
Minimum fuel stops2
BUILT IN PHASES
Useful first. Connected later.
The next tools will only be added when they are reliable: lap sheets, tyre logs, run plans, setup changes, notes and debriefs. Paid team functions and third-party submissions are not active.