Protein Timing Calculator
Track your protein timing with our free sports calculator. Get personalized stats, rankings, and performance comparisons.
Formula
Daily Protein = Body Weight (kg) x Goal Multiplier (g/kg)
Total daily protein is calculated by multiplying body weight in kilograms by a goal-specific multiplier (1.2 maintenance, 1.4 endurance, 1.8 muscle building, 2.0 fat loss). Pre-workout, post-workout, and bedtime doses are fractions of body weight to optimize MPS timing windows.
Worked Examples
Example 1: Muscle-Building Schedule for 80kg Athlete
Problem: An 80 kg male strength athlete wants to optimize protein timing across 5 meals for maximum hypertrophy with a 60-minute session at 5 PM.
Solution: Daily protein: 80 kg x 1.8 g/kg = 144 g\nPer meal: 144/5 = 28.8 g\nPre-workout: 80 x 0.25 = 20 g\nPost-workout: 80 x 0.4 = 32 g\nBedtime casein: 80 x 0.35 = 28 g\nLeucine/meal: 28.8 x 0.08 = 2.3 g
Result: Total: 144g daily | 5-6 feedings | Leucine threshold approached each meal | MPS window every 3-4 hours
Example 2: Endurance Runner Recovery Timing
Problem: A 65 kg female marathon runner trains 120 minutes in the morning and wants to optimize recovery protein timing across 4 meals.
Solution: Daily protein: 65 kg x 1.4 g/kg = 91 g\nPer meal: 91/4 = 22.8 g\nPre-run: 65 x 0.25 = 16.3 g\nIntra-workout: 65 x 0.15 = 9.8 g BCAAs\nPost-run: 65 x 0.4 = 26 g with carbs (4:1 ratio)\nBedtime: 65 x 0.35 = 22.8 g casein
Result: Total: 91g daily | 4 feedings + intra-workout | Carb-protein combo post-run
Frequently Asked Questions
What is protein timing and why does it matter for athletes?
Protein timing refers to the strategic distribution of protein intake throughout the day to optimize muscle protein synthesis and recovery. Research shows that consuming protein at specific intervals can enhance the anabolic response compared to random or uneven consumption patterns. The concept is rooted in the fact that muscle protein synthesis has a refractory period of approximately three to five hours, meaning your body can only utilize a certain amount of protein per meal before the stimulus fades. By spacing protein intake evenly, athletes can maximize the total number of muscle-building windows each day. This approach is particularly important for those seeking hypertrophy, strength gains, or rapid recovery between sessions.
How much protein should I eat before a workout?
Pre-workout protein intake should be approximately 0.25 grams per kilogram of body weight, consumed roughly 60 to 90 minutes before training begins. This provides enough time for digestion and amino acid absorption so that circulating amino acid levels are elevated during your session. A 75-kilogram athlete would consume about 19 grams of protein pre-workout, ideally from a fast-digesting source like whey protein or lean poultry. Combining this protein with carbohydrates can further enhance performance by topping off glycogen stores and providing sustained energy. The pre-workout meal serves as a primer for muscle protein synthesis and ensures your muscles have building blocks during the mechanical stress of exercise.
Should I consume protein before bed for muscle growth?
Consuming slow-digesting protein such as casein before bed has been shown to enhance overnight muscle protein synthesis and improve recovery. Studies demonstrate that 30 to 40 grams of casein protein consumed 30 minutes before sleep provides a sustained release of amino acids throughout the night, supporting muscle repair during the longest fasting period of the day. This practice is particularly beneficial for athletes in caloric surplus seeking maximum hypertrophy, as well as those recovering from intense training sessions. The nighttime dose does not appear to negatively affect sleep quality or morning appetite in most individuals. Cottage cheese or Greek yogurt provide similar slow-digesting profiles for those who prefer whole foods over supplements.
Do I need intra-workout protein during long training sessions?
Intra-workout protein supplementation becomes beneficial when training sessions exceed 90 minutes in duration, particularly during resistance training or high-intensity endurance activities. During prolonged exercise, muscle protein breakdown rates increase and providing amino acids during the session can help offset this catabolic effect. A typical recommendation is 0.15 grams of protein per kilogram of body weight consumed in liquid form, often combined with fast-acting carbohydrates for sustained energy. For sessions under 60 minutes, intra-workout protein provides minimal additional benefit if adequate pre-workout nutrition was consumed. Essential amino acids or BCAAs in liquid form are preferred because they require minimal digestion and are rapidly available to working muscles.
How does protein timing differ for endurance versus strength athletes?
Endurance athletes and strength athletes have different protein timing priorities due to the distinct physiological demands of their training. Strength athletes benefit most from distributing 1.6 to 2.2 grams per kilogram across four to five meals with particular emphasis on the post-workout window to support muscle hypertrophy and repair from mechanical loading. Endurance athletes require slightly less total protein at 1.2 to 1.6 grams per kilogram but should prioritize combining protein with carbohydrates post-exercise at a four-to-one ratio to optimize glycogen replenishment. Pre-exercise timing is similar for both groups, but endurance athletes should favor lighter, easily digestible sources to avoid gastrointestinal distress during prolonged activity.
Can I consume all my daily protein in one or two meals?
While consuming all daily protein in one or two large meals can still support basic health and total protein requirements, it is suboptimal for maximizing muscle protein synthesis compared to distributed feeding patterns. Research by Mamerow and colleagues demonstrated that distributing protein evenly across three meals stimulated 24-hour muscle protein synthesis 25 percent more than consuming the same total in a skewed pattern heavily weighted toward dinner. The body can digest and absorb large quantities of protein, so none is truly wasted from large meals, but the anabolic signaling effect is blunted beyond approximately 0.4 to 0.55 grams per kilogram per meal. Athletes seeking maximal gains should aim for at least three protein-rich meals daily with four being preferable.