Free fitness and gym business calculators.
Calories, protein, BMI, body fat, one-rep max and heart-rate zones for members, plus GST, profit and churn calculators for gym owners. They all run in your browser. No sign-up, and nothing you type is saved.
Fitness and nutrition
For anyone who trains, and for trainers who want a quick number to show a member.
Calorie calculator
Daily calories (TDEE) for losing, keeping or gaining weight, with a protein, carb and fat split.
Indian food calorie counter
Calories, protein, carbs and fat for 225 Indian foods. Build your day's meals and see the total.
BMI calculator
Body mass index with both the WHO and the Asian-Indian cut-offs, plus your healthy weight range.
Body fat calculator
US Navy tape-measure method: body fat %, fat and lean mass in kg, and where you sit on the ACE chart.
Protein calculator
How much protein you need a day for your goal, split by meal, with an Indian veg and non-veg food planner.
One-rep max calculator
Estimate your 1RM from any set of 1 to 12 reps, with a %1RM training-load table in plate-friendly kg or lb.
Heart rate zone calculator
Your max heart rate and the five training zones in beats per minute, including zone 2.
For gym owners
Know your break-even, your GST and what churn is really costing you.
Gym GST calculator
GST on gym fees at 5%: add or extract tax, CGST/SGST or IGST split, and your monthly GST from every plan.
Gym profit calculator
Break-even members, monthly profit, margin and payback period for your gym, with a live profit chart.
Gym churn calculator
Monthly churn, retention, member lifetime value and the revenue churn costs you, with a 12-month projection.