Protein Absorption Calculator – Calculate Protein Uptake Rate
Estimate how quickly your body absorbs different types of protein. This calculator shows absorption rates for whey, casein, and other protein sources to optimize timing for muscle building and recovery.
Protein Details
Absorption Results
Enter protein details to calculate absorption
Protein Absorption Rates
Absorption Speed:
- Whey isolate: ~10 g/hour (1-2 hours)
- Whey concentrate: ~8-10 g/hour (2-3 hours)
- Egg/Soy/Pea: ~7-8 g/hour (3-4 hours)
- Casein: ~6 g/hour (5-7 hours)
Timing Recommendations:
- Post-workout: Fast protein (whey)
- Before bed: Slow protein (casein)
- Between meals: Medium protein (egg, soy)
- Daily intake: 1.6-2.2 g/kg body weight
Frequently Asked Questions
How much protein can the body absorb at once?
The body absorbs about 6-10g of protein per hour depending on the type. However, "absorption" differs from "utilization" - larger amounts are absorbed but used more slowly.
Is whey protein absorbed faster than food?
Yes, whey isolate is one of the fastest-absorbing proteins. Whole foods like meat take longer due to digestion of fats and fiber that slow gastric emptying.
Should I take protein before bed?
Casein protein before bed provides slow-release amino acids during sleep, potentially reducing muscle breakdown. About 30-40g is typical.
Does protein timing matter?
Total daily protein matters most. Timing provides marginal benefits - post-workout protein within 2 hours and even distribution across meals (20-40g each) is optimal.
What affects protein absorption?
Meal composition (fat/fiber slow absorption), digestive health, age, protein type, and whether you eat alone or with other foods all affect absorption rate.