# Decline to Flat Bench Conversion?

Hi all,

Was curious as to if anyone had an equation or something to convert what you do on a decline to flat? I.E. 225x 24 on decline would be what on a flat?

Thanks!

Decline is cheating.

Mark It Zero!

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Square root of decline to the power of incline cubed, multiply by dumbbell bench divided by close grip.

The answer is 3

bench weight Ă— (1 + cos(angle of the bench))

Only works to a 15 degree bench, then you need a slightly different formula.

cos(0) =1, so youâ€™re saying that your flat bench weight should be 2x your flat bench weight?

No using the incline formula for a flat bench is like dividing by zero. The universe ends.

No, it just means youâ€™re formula is wrong lol. Youâ€™re formula is saying that if you can bench 300 lb flat you can bench 595 lb on a 10 deg decline.

What youâ€™re looking for is decline weight = bench weight / cos(decline angle). This breaks down because it blows up to infinity as you get steeper and steeper, so itâ€™s probably only accurate up to 30ish deg decline.

The equation wasnâ€™t meant to be taken seriously.

Haha, I know.