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You can link loads between calculators. For example, create a wood column and link it to the reactions from a wood beam: in the column’s load section, under Lateral movement loads, click Link, select the beam (and the support location), and the column will use those reactions. Clicking the linked label takes you back to the source calculator. If you change the beam (e.g. increase loads), the column updates automatically, with no refresh needed. Calcs.com is unit-aware. In inputs like Beam span length you can type expressions such as 20 feet + 10 inches or 10 inches × 5, and the conversion is done automatically. You can mix units (e.g. 8 meters) as well. You can also reference variables in other inputs (e.g. use the total length L or L/2 for end locations), and the calculator will resolve them correctly.