NOW Fitness
Free fitness calculators
Work out your strength level, your one-rep max, your calories and your protein. The same math as in the NOW Fitness app.
How strong am I?
Enter one set you did. You will see your estimated one-rep max, your strength level from beginner to elite, and the rank the NOW Fitness app would give that muscle.
Open →One-rep max calculator
Enter the weight and reps of a hard set. You get your estimated one-rep max and a table of training weights.
Open →Exercise library
370 exercises with a video, step-by-step technique and the muscles they train. The same library as in the NOW Fitness app.
Open →Calorie calculator
Lose fat (−0.5 % a week)
2,245
kcal/day
Maintain weight
2,685
kcal/day
Build muscle (+250 kcal)
2,935
kcal/day
Estimate. Your real number shows after 2–3 weeks of logging food and weight.
Protein calculator
120–165g per day≈ 30–41 g per meal, in 4 meals