| Property | Double | Decimal |
| Memory Storage | Double is stored in memory in binary form, which means that it can accurately display only those numbers that are a power of 2. Otherwise, decimal rounding errors occur. | Decimal is stored in memory in decimal form, so it can display fractional parts of a number with absolute precision. |
| When to use? | Decimal is needed where the fractional part is important. For example, when working with finance. | For values that are more artifacts of nature that can't really be measured exactly anyway, float are more appropriate. For example, scientific data would usually be represented in this form. |
| Memory Occupied |  |  |
| Fractional Precision |
15-16 places |
28-29 places |
| Special Values |
+0, -0,+ ∞- ∞, NaN |
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| Additionaly |
Double is a native type for the processor, so operations with this type are much faster. |
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