Nerd out with 4 awesome fitness calculators

Fitstack
4 min readSep 6, 2016

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A lot of food/health/wellness/fitness/ridiculously annoying god-like Instagrammers seem to have it all together.

They just eat real, clean foods (which I’m sure costs an arm and a leg on one Whole Foods trip), easily get their 8 hours of sleep (5 hours is the new 8, amiright?), and are in sync with all of their body’s nutritional and physical needs.

Their lifestyles seem as unobtainable as the perfection of their pictures.

^ Me if I was an Instagram fitness model.

While these fitness Insta icons seem to be able to do it on their own, it’s nearly impossible to do so without some cold, hard calculations.

Doctors tell you one thing, while your mother tells you another, while one dude at the gym swears by something totally different.

None of us have the exact same dietary, sleep, macronutrient or caloric needs- this is where health and fitness calculators come in.

Whether you are (re)starting your fitness journey, have recently hit a plateau, or are just curious about what your actual calculations are, fitness calculators are a fantastic tool for quantifying your goals and getting back to the basics.

Go ahead and nerd out with some of our favorite calculators:

1. Sleep Timer

Wake up at just the right time

Sometimes you can feel refreshed and awake after a solid 6 hours of sleep, but groggy and unmotivated after 8 hours of sleep- why?

It all depends on your sleep cycles, and whether you wake up in the middle or at the end of one.

Sleep Timer helps you to calculate exactly when you should go to bed, and takes into account how long it takes for you personally to fall asleep, to ensure you wake up feeling refreshed every time- no matter if you have 4 or 8 hours of sleep.

2. My Macros+

Break down your diet

My Macros + Diet, Weight and Calorie Tracker makes breaking down your diet simple.

You first calculate your macros, the percentage of calories dedicated to Fat, Carbs and Protein, based on your personal stats and weight loss goals.

Whether you eat simple meals or complex, instaworthy creations, there is a huge database as well as a barcode scanner so you can ensure you’re tracking the correct nutritional information.

Added bonus? Like many other apps, it isn’t limited to breakfast, lunch, dinner and snacks, so if you like having 5–6 smaller meals a day, you’ll have no problem tracking them.

3. One-Rep Max Calculator

How much should you be lifting?

While you can be feeling super strong one day or like an unmotivated weakling on another, there is great benefit in knowing your baseline One-Rep Max (1RM).

Courtesy of BodyBuilding.com, the 1RM calculator makes it easy for you to calculate your 1RM based on any number of reps, as well as the different percentages, so you can personalize any workout to your own strength and ability.

4. Recommended Water Intake

Because you know you don’t drink enough

We are all guilty of not getting even close to the recommended daily water intake, which is generally defined as 8 servings of 8 oz. of water, so at least 64 oz.

Yet this doesn’t take into account your personal needs based on your weight or activity level.

With yet another bodybuilding.com calculator, you can use the recommended water intake calculator to ensure you are hydrated enough to perform at the gym, at work, and throughout the day.

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Fitstack

Curated directory of fitness apps, wearables, software, and online resources to help you get fit. @fit_stack