RackMath Barbell Plate Calculator

Contains ads
Offers in-app purchases

When weightlifting, you want to focus on your workout. You don’t want to spend time calculating which weight plates you need to load onto your barbell. The RackMath barbell calculator is the simple solution to this problem. It calculates what weight plates you need to load onto your bar to achieve your desired weight.

Stop doing the math in your head. The plate calculator will do the math for you. If you are into weightlifting or powerlifting and consistently perform heavy lifts like the squat, deadlift and bench press, then you won’t find a better weight plate calculator. Simply enter the weight you want to lift, and instantly you’ll know how to load your bar. It makes a perfect companion to weightlifting programs such as Starting Strength 5x5 or Jim Wendler’s 5/3/1.

Don’t step into the squat rack with the wrong weight by accident. You can count on the RackMath barbell calculator to make sure you’re loading your bar correctly.

Other weightlifting plate calculators just assume you have certain plates and unlimited stock. We know that’s simply not true. This is why Rack Math is designed to let you set your own equipment inventory. Select pounds or kilograms and choose which weight plates (and how many) are available to you.

Fractional and non-standard weight plates:
Other weightlifting calculators do not include fractional plates or lesser used weight plate denominations. RackMath's inventory offers fractional plates as well as a large number of denominations.


Custom bars:
With RackMath Premium, you get access to a variety of bars so you can move beyond the squat rack - use a dip belt, hex bar, leg press machine and EZ curl bars. Or create your own bar and set the weight to whatever you desire.

More plates:
Increase the plate maximum from 8 plates to 16 plates.

Custom plates:
Want Rack Math's plate inventory to match your own exactly? Go ahead and customize your plate colors. Have a plate with an unusual weight? You can add that too.

If you're the type that wants to count every bit of weight, now you can by adding collar weights.

Percent table:
Perhaps our favorite feature, the percent table allows you to quickly change the weight by a percentage making it perfect for warm-up sets, pyramids and 5/3/1.

Reverse calculator:
Load up your weightlifting bar with whatever plates you want and then see how much weight you're about to lift.

Rep range calculator:
Calculate your theoretical lift weight across reps, from your one-rep max to 30.

No ads:
Take back your screen space with an ad-free experience.

*Requires in-app purchase
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What’s new

Minor UI Tweak
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Additional information

December 26, 2018
Current Version
Requires Android
4.1 and up
Content rating
In-app Products
$2.99 per item
Offered By
Classy Jackal Inc.
12 Inglis Ave, Courtice, ON L1E 2A8
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