A lovely bouquet of online calculators

Some people collect sea shells. Others collect porcelain figurines. I collect online calculators.

Here are some of my favorite running- or fitness-related calcs:

Equivalent performances calculator
I use this one a lot. Not only does it give equivalent times for races of varying distances (along with pacing information), but it also supplies target pace ranges for key running workout types. Note that this is not a “performance predictor”. This I’ve learned the hard way. Also note that the target workout paces can be on the aggressive side.

Here’s a more souped up equivalent performances calculator. I like this one because it can factor in things like temperature, elevation, wind speed and altitude if you’re feeling very wonky.

Race pace calculator 1
This is a very handy race pace calculator, because it allows you to play with different positive or negative split scenarios. I’m sure I’ll end up using this for my next marathon, as I learned in my last half marathon that I run well when I do “very negative” splits. And that’s a positive thing.

Race pace calculator 2
If you just want to know what your even splits would be, this is the calculator for you. You can also print out a pace band to tape around your wrist.

Want to know what your VO2 max is? Use this VO2 max calculator to find out.

Wondering how fast your poor old legs would take you if they were just a bit younger? Calculate your age graded equivalents — and either weep or rejoice.

Ever wonder how much faster you could run if your dropped a few pounds? Find out with this weight change effect predictor. How much ice cream and cheesy poofs can you continue to eat while still losing weight? Find out with this calorie intake calculator.

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