<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM LANGER
BIOMECHANICS GROUP, INC.'S FORM 10-Q FOR THE QUARTER ENDED AUGUST 26, 2000 AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS AND
NOTES, THERETO.
</LEGEND>
<MULTIPLIER> 1
<S> <C>
<PERIOD-TYPE> 3-MOS
<FISCAL-YEAR-END> FEB-28-2001
<PERIOD-END> AUG-26-2000
<CASH> 636,870
<SECURITIES> 0
<RECEIVABLES> 1,620,058
<ALLOWANCES> 67,312
<INVENTORY> 1,097,862
<CURRENT-ASSETS> 3,493,272
<PP&E> 3,782,976
<DEPRECIATION> 2,988,138
<TOTAL-ASSETS> 4,587,908
<CURRENT-LIABILITIES> 1,906,991
<BONDS> 0
0
0
<COMMON> 52,807
<OTHER-SE> 2,383,505
<TOTAL-LIABILITY-AND-EQUITY> 4,587,908
<SALES> 2,915,534
<TOTAL-REVENUES> 2,915,534
<CGS> 1,875,565
<TOTAL-COSTS> 1,108,157
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 4,279
<INCOME-PRETAX> (61,151)
<INCOME-TAX> 2,500
<INCOME-CONTINUING> (63,651)
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> (63,651)
<EPS-BASIC> (.02)
<EPS-DILUTED> (.02)
</TABLE>