Stop planning your race in a spreadsheet
iStints builds your stint plan and tracks fuel and pit windows. Your whole team sees it live.
How it works
Add your drivers
List everyone racing and assign stints as you go.
Set up your event
Add your team name and event details in seconds.
Set race parameters
Enter race length, lap times, and fuel data.
Trust the plan
Drivers and strategists execute together, calm and confident when it counts.
Configure race times
Set the official start time, then adjust for the server.
Review your plan
Check projected stints, pit stops, and fuel needs at a glance.
Share with your team
Copy the stint link or add it to Google Calendar.
Set it once, race with confidence
Plug in your race duration, fuel, lap time, and pit loss. The plan builds itself.
Every field means something
Each box maps directly to how your plan gets calculated. Nothing here is decorative, and nothing is hidden.
- Event Duration
- How long the race runs, in laps, minutes, or hours.
- Time Zone
- Your local offset, so every time shown matches your clock.
- Race Start Time
- When the green flag drops, in your local time.
- In-Game Server Start Time
- The sim's own clock, kept in sync with your race start.
- Car Fuel Capacity
- Your tank size, in liters or gallons.
- Fuel By Lap
- How much fuel one lap burns. It drives every stint length.
- Lap Time
- Your average lap, the base every projection is built on.
- Pit Stop Loss Plan
- Time lost per stop, baked into the whole plan.
Built for the pit wall
A large, glanceable timeline. Read it from across the pit wall, update it in seconds.
No formulas to break
Race config changes (fuel, tires, driver swaps) update everything automatically.
Made for live racing
Spreadsheets are static. iStints adapts in real time as the race unfolds.
Everyone on the same page. Literally.
Spreadsheets weren't built for racing. iStints was. No more broken formulas, tiny cells, or hunting for the right tab mid-race.
Your co-drivers, engineer, and strategist all see the same live timeline. It updates the instant something changes.
Shared, not sent
One live timeline instead of files passed back and forth.
Instant updates
Change your race config or stint order, and everyone sees it in real time.
Everyone stays aligned
Drivers know exactly when they're up. No confusion, no guessing.
Disclaimer
This tool provides race projections and estimates based on user input and standard calculations. Please keep in mind:
- Calculations and projections provided by this tool are based on a combination of personal experience, discussions with engineers, and statistical analysis of motorsport events. While every effort has been made to ensure accuracy, no guarantee is made that results are error-free or perfectly suited to your specific scenario. Use at your own risk.
- All outputs are intended as estimates and may not reflect actual race outcomes. The tool does not account for every possible variable or unforeseen event.
- You are solely responsible for how you use, interpret, and act upon the information provided. The creator and contributors of this tool accept no liability for any loss, damage, or consequences resulting from reliance on these calculations, including but not limited to race results, strategy decisions, or financial outcomes.
- Real-world variables—such as rain, yellow flags, safety car periods, driver performance, car setup, tire wear, fuel consumption, and weather conditions—can dramatically affect race results and are not fully accounted for in these projections. Motorsport is inherently unpredictable.
- Final numbers and recommendations are for guidance only and should not be considered definitive, guaranteed, or a substitute for professional engineering advice. Always consult with your team, engineers, and review all data before making critical decisions.
- This tool is continually updated based on user feedback, new data, and evolving best practices. However, it remains your responsibility to verify all results and ensure they are appropriate for your unique situation.
Any Garage61-related names, marks, services, or data referenced by this application belong to their respective owners and do not imply ownership, endorsement, or partnership unless explicitly stated.
Donations: The “Support & Donate” link opens Buy Me a Coffee (a third-party service). Donations and payments are processed by them under their terms and privacy policy. iStints does not collect or store payment details.
By using this application, you acknowledge and accept these limitations.
Local storage notice: This app stores your stint plan in your browser’s local storage (localStorage) to preserve it on this device. You can remove it anytime by clearing this site’s data in your browser settings.
Official Split Calculator for AC7 SG28 Racing
This application and all its content are the exclusive intellectual property of Cesar Cabral, the creator and mentor of this project. The original idea for this tool was to assist with iRacing endurance races, but its features and calculations are equally valuable for real-world motorsport events. Any unauthorized duplication, reproduction, distribution, modification, or commercial use—whether in part or in whole—is strictly prohibited and fully protected under international copyright and intellectual property laws. Violations, including but not limited to illegal copying, sharing, or adaptation of this software or its content, may result in severe civil and criminal penalties. Offenders may be subject to substantial fines, legal action, and liability for damages as determined by applicable law. All rights are rigorously enforced to the fullest extent possible. If you are unsure about your rights to use, share, or modify this project, please seek explicit written permission from the copyright holder before proceeding.
Open Collaboration: While the project is protected, we warmly welcome collaboration, contributions, and constructive feedback from the community. If you are interested in improving, extending, or building upon this work, please reach out to discuss partnership or contribution opportunities. Together, we can make this tool even better for the motorsport and sim racing community.
Attribution: If you use, reference, or are inspired by this project in your own work, please provide appropriate credit to Cesar Cabral and the iStints project. If your use also involves Garage61-related features, data, or integrations, please include appropriate credit to Garage61 as well.
Thank you for supporting independent development and for being part of this journey!
© CESARCABRAL.com iSTINTS.com current version v2.0.1. All rights reserved.
