general relativity - How much faster would a Clock without gravity run?

Pardon the misleading title.

It is to my understanding that moving/heavy clocks run slow. The Earth itself is under gravitational influence from many sources, and is moving. Is there a way to know how much 'faster' a clock would run if those influences were removed? I don't need a precise number, an order of magnitude is fine, just to get the idea.

Any insight is appreciated.

Answer

Neither effect can really be calculated in a meaningful way.

Kinematic time dilation describes the time dilation of one frame of reference relative to another. There is no preferred frame of reference, so there is no way to say what it would mean to remove the effect of kinematic time dilation.

Gravitational time dilation is a concept that makes sense in a static spacetime, and in that case the time dilation between two different points is given in terms of the difference $\Delta\Phi$ in gravitational potential as $e^{\Delta\Phi}$. Here again you have the problem of what to compare to. Do you want to compare to interplanetary space? Interstellar space? Space outside our local cluster of galaxies? As you continue this process, you reach cosmological distances, at which point you run into the problem that cosmological spacetimes aren't static, and the whole thing becomes meaningless.

This is what relativity is all about. There's no best measure of time. It's all relative.