Post Workout Nutrition Calculator

Calculator form

Body weight

Weight unit

Workout type

Workout duration (minutes)

Intensity

Primary goal

Minutes until next full meal

Sweat loss (liters)

Sweat sodium concentration (mg/L)

Carbs during workout (grams)

Second hard session today?

Example data table

Example athlete	Weight	Session	Protein	Carbs	Fluids	Sodium	Calories
Strength athlete	80 kg	60 min resistance, high	31.0 g	49.3 g	1.35 L	720 mg	427 kcal
Runner	68 kg	90 min endurance, high	24.4 g	74.4 g	1.65 L	935 mg	447 kcal
Mixed sport player	74 kg	75 min mixed, moderate	22.2 g	55.5 g	1.20 L	640 mg	398 kcal

These rows are simple examples. Actual needs vary by training load, heat, meal timing, and personal tolerance.

Formula used

Protein target
Protein (g) = Body weight in kg × protein factor
Protein factor changes by workout type, intensity, goal, and time to next meal.

Carbohydrate target
Carbs (g) = Body weight in kg × carb factor × duration factor × intensity factor × goal factor × urgency factor − adjustment for during-workout carbs

Fluid target
Fluids (L) = Effective sweat loss × 1.5
This aims to cover typical post-session replacement needs.

Sodium target
Sodium (mg) = Effective sweat loss × sweat sodium concentration

Calorie estimate
Calories = (Protein × 4) + (Carbs × 4) + (Fat × 9)

The calculator blends standard recovery principles with practical meal timing and hydration adjustments. It is meant for planning, not diagnosis.

How to use this calculator

Enter your body weight and choose the correct unit.
Select the session type that best matches your workout.
Add workout duration and intensity honestly for better estimates.
Choose your main goal, such as fat loss or muscle gain.
Enter time until your next full meal.
Add sweat loss and sodium data if you track them.
Include carbs consumed during training when applicable.
Submit the form to see recovery targets above the calculator.
Use the CSV or PDF button to save your result.

FAQs

1) Why does this calculator focus on protein and carbs?

Protein supports muscle repair, while carbs help restore glycogen after training. Together, they cover most immediate recovery needs. Fluids and sodium matter too, especially after longer or sweat-heavy sessions.

2) Is post workout timing always urgent?

Not always. Timing matters more after hard, long, or repeated sessions, or when your next meal is far away. If you already ate near training, the urgency is usually lower.

3) Can I use this for fat loss?

Yes. The fat-loss setting reduces carb targets while keeping protein supportive. That can help recovery without pushing intake too high. You still need enough fuel to train well and recover consistently.

4) Why is sodium included?

Sodium helps replace sweat losses and supports rehydration. It becomes more important after hot training, long sessions, or if you are a salty sweater. Very low sodium replacement may slow fluid recovery.

5) Should I avoid fat after exercise?

No. You usually do not need to avoid fat completely. Moderate amounts are fine. Very large fat-heavy meals may slow digestion when fast recovery is the priority.

6) What if I do not know my sweat loss?

You can still use the calculator. It estimates sweat loss from duration and intensity. A bodyweight change test before and after training can improve your future hydration estimates.

7) Does this replace advice from a dietitian?

No. It is an educational planning tool. A dietitian or sports nutrition professional can tailor recommendations for medical conditions, competition plans, digestive issues, and precise body-composition goals.

8) Can I use food instead of supplements?

Absolutely. Regular foods work very well for most people. Supplements are mainly about convenience. A balanced meal or snack that matches your targets can be just as effective.

Designed with a clean white theme and responsive layout for desktop, tablet, and mobile use.