// Supplement Calculators

Pre-Workout Caffeine calculator

Find your pre-workout caffeine dose.

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Pre-workout dose
225–450mg
  • Take 30–60 minutes before training. Avoid within ~8 hours of bedtime.

Estimates are for general guidance only and are not medical advice. For a personalised plan, book a free guided tour at RPM Gym.

This calculator helps you determine your optimal pre-workout caffeine dose. Based on established sports science, a dosage of 3-6mg of caffeine per kilogram of body weight is generally effective for enhancing athletic performance. Simply input your current body weight in kilograms to receive a recommended range, giving you a clear guideline for your pre-training supplementation.

The calculator provides a dosage range, not a single number. This range considers individual variability in caffeine sensitivity. Start with the lower end of the recommended dosage and assess your response. If you tolerate it well and desire more significant effects, gradually increase towards the higher end within the suggested range for your next session.

Using your personalized caffeine dose, you can expect improved focus, reduced perception of effort, and enhanced power output during your workouts. Remember, caffeine is a tool; it complements consistent training and proper nutrition. Experiment within your recommended range to find what works best for your body, and always prioritize safety and listen to your body's signals.

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// Frequently Asked

Questions, answered.

What are the benefits of caffeine before a workout?

Caffeine can enhance alertness, focus, and endurance. It may also reduce the perception of effort during exercise, allowing you to train harder and longer.

Is more caffeine always better?

No. Exceeding the recommended dosage can lead to adverse effects like jitters, anxiety, increased heart rate, and disrupted sleep. There's a point of diminishing returns where benefits plateau while side effects increase.

When should I take pre-workout caffeine?

For optimal effects, consume caffeine approximately 30-60 minutes before your workout. This allows sufficient time for the caffeine to be absorbed and reach peak levels in your bloodstream.

Can I use this calculator if I'm sensitive to caffeine?

If you are highly sensitive to caffeine, even the lower end of the recommended range might be too much. Consider starting with a much smaller dose or consulting a healthcare professional before using caffeine as a supplement.

Can RPM Gym help me use this pre-workout caffeine calculator result?

Yes. Bring your result to a free tour or coaching conversation, and the RPM team can help connect it to a realistic training and nutrition plan.

Make the numbers count.

Book a free guided tour at RPM Gym Abu Dhabi and turn your targets into a real plan.

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