I agree with bednobs, there is a conversion equation but it is , in my opinion, complicated. The US and Europe uses two separate systems of measurement. I would guess that your kit is US made. Stick to one system.
Remember it is not the total cholesterol that is important it is the level of HDL (good cholesterol) which is the important fraction.
Your total cholesterol may be high, but it may be due to a high HDL which is a good thing.
HDL....High Density Lipoprotein (good cholesterol)
LDL....Low Density Lipoprotein (bad cholesterol)