Template:Infobox river/calcunit

{{pp-template|small=yes}}{{#if:{{{free|}}}

|{{{free}}}{{#if:{{isnumeric|{{{free}}}}}| {{error|units?}}Category:Articles requiring unit attention}}

|{{#if:{{{met|}}}

|{{convert|{{{met}}}|{{{met_unit|km}}}|abbr=on}}

|{{#if:{{{imp|}}}

|{{convert|{{{imp}}}|{{{imp_unit|miles}}}|abbr=on}}

}}

}}

}}