Strava Relative Effort & TRIMP Calculator - Training Load & Calories
Model cardiovascular training strain using the Banister TRIMP equation, estimate calorie expenditure from biometric heart rate, and calculate fluid replenishment.
How to Use Training Load & TRIMP in 3 Simple Steps
Step 1: Upload
Drag & drop your .FIT, .GPX, or .TCX activity file. All processing is 100% private in your browser.
Step 2: Process
FitCrop inspects telemetry streams, removes anomalies, recalibrates metrics, or fixes binary checksums.
Step 3: Export
Download your clean Strava, Garmin, and Zwift compatible file with 1 click. Zero server wait.
Frequently Asked Questions
How does Strava calculate Relative Effort?
Strava Relative Effort is based on the Banister TRIMP (Training Impulse) model, which weights time spent in higher heart rate zones exponentially compared to aerobic base zones.
How are active calories calculated from heart rate?
FitCrop utilizes the Keytel equation, which takes into account average heart rate, body weight, age, duration, and biological sex for high accuracy energy expenditure.