This is a predicted peak flow calculator.
Predicted Peak Expiratory Flow

<-- Age
<-- Height
Predicted Average Peak Expiratory Flow --> resultscore1=(Q2a)+(Q3);score1>1204?'560':score1>1203?'547':score1>1202?'532':score1>1201?'515':score1>1200?'496':score1>1104?'582':score1>1103?'568':score1>1102?'552':score1>1101?'535':score1>1100?'515':score1>1004?'603':score1>1003?'588':score1>1002?'572':score1>1001?'554':score1>1000?'533':score1>904?'622':score1>903?'607':score1>902?'591':score1>901?'572':score1>900?'551':score1>804?'640':score1>803?'625':score1>802?'608':score1>801?'588':score1>800?'566':score1>704?'656':score1>703?'640':score1>702?'622':score1>701?'602':score1>700?'580':score1>604?'668':score1>603?'651':score1>602?'633':score1>601?'613':score1>600?'591':score1>504?'675':score1>503?'659':score1>502?'641':score1>501?'620':score1>500?'597':score1>404?'677':score1>403?'661':score1>402?'643':score1>401?'622':score1>400?'599':score1>304?'672':score1>303?'655':score1>302?'637':score1>301?'617':score1>300?'594':score1>204?'656':score1>203?'640':score1>202?'622':score1>201?'603':score1>200?'580':score1>104?'626':score1>103?'611':score1>102?'594':score1>101?'575':'554' liters per minute

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