lb/yr
pound per year
The pound per year is an annual mass rate in customary units, common in North American emissions reporting and chemical usage summaries. Using the exact pound of 0.45359237 kilograms and the Julian year of 31,557,600 seconds, it equals about 1.4373e-8 kilograms per second. The ratio is exact given those definitions, with the decimal rounded here.
Watch out: Emissions permits and reporting thresholds in the United States are usually written in tons per year, meaning short tons of 2000 pounds. Dividing a pounds-per-year figure by 2000 gives short tons, not tonnes.
| 1 lb/yr | 0.000051744509 kg/h |
Solvers that use mass flow rate