part per quadrillion
| Symbol: | ppq |
| Category: | Fraction |
| SI Equivalent: | 1×10-15 |
| Dimension: | nil (fraction) |
| System: | INT |
| Notes | |
| 1 ppq = 10-15 | |
1 ppq =
| Fraction | ||
| Symbol | Unit Name | |
| 2.4×10-14 | ct, Kt | carat (karat) |
| 1×10-6 | ppb | part per billion |
| 1×10-13 | pph, % | part per hundred |
| 1×10-7 | pphm | part per hundred million |
| 1×10-10 | ppht | part per hundred thousand |
| 1×10-9 | ppm | part per million |
| 1×10-3 | ppt | part per tera |
| 10×10-13 | ppt | part per thousand |















