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Free tools for your training and your creatine
Small calculators that answer one question in a few seconds.
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For the gym
For your creatine
Creatine Tub Calculator: How Many Days Will My Tub Last?
Enter the size of your tub and the grams you take each time. You get the number of days it lasts and the date it runs out.
One Rep Max Calculator (1RM): Estimate Your Max From Any Set
Enter the weight and reps of a hard set to estimate your one rep max, plus a percentage table to pick your training weights. Works in kg or lb.
Free Workout Plan Generator: Answer 6 Questions, Get Your Week
Pick your goal, days, session length and equipment. You get a weekly gym plan with exercises, sets, reps and rest times. Free, no sign-up.
Creatine Cost Calculator: Price Per Serving, Month and Year
Enter the tub price, tub size and the serving you already take. See what your creatine costs per serving, per month and per year, and compare tubs fairly.
Progressive Overload Calculator: Week-by-Week Double Progression
Enter your weight, reps, rep range and weight jump. You get a week-by-week progressive overload plan using double progression: more reps first, then weight.
RPE Calculator: Estimate Your 1RM From Reps and RPE
Enter weight, reps and RPE to estimate your 1RM with the standard RPE chart, then get the weight for any target reps and RPE. RPE and RIR explained.
Weekly Sets Calculator: How Many Sets Per Muscle Per Week?
Count your hard sets per muscle for the week and see where each one sits: under 10, 10 to 20 or over 20 sets, the ranges used in training volume research.
Plate Calculator: What Plates to Load on Each Side of the Bar
Type your target weight and pick your bar. The plate calculator shows which plates go on each side, with a drawing of the loaded bar. In kg or lb.
DOTS Calculator: Powerlifting Score From Your Total and Bodyweight
Enter your bodyweight, your squat, bench and deadlift total and your sex to get your DOTS score. Includes the full formula and how DOTS differs from Wilks.
Habit Formation Calculator: When Will Your Habit Feel Automatic?
Enter the day you started a new habit and see the dates for day 18, day 66 and day 254, based on the best-known study on how long habits take to form.
Warm Up Sets Calculator: Ramp Up to Your Working Weight
Enter your working weight and reps. You get the warm-up sets from the empty bar up, rounded to loadable weights, with rest times. Free, no sign-up.
Printable Creatine Tracker: Free 30, 60 or 90 Day Sheet
Pick a start date and 30, 60 or 90 days. Print the sheet or save it as a PDF, stick it next to the tub and tick a box every day you take it.