Try on a spare copy

Assuming your data is in col A, A1 down

Put in B1: =ROUND(A1,1)
Copy down

Select col B

Do a copy paste special values ok
over col A (overwrite col A)

Delete col B

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Rgds
Max
xl 97
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GMT+8, 1° 22' N 103° 45' E
xdemechanik <atyahoo<dotcom
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"Højrup" wrote in message
...
After importing data with four decimals into my Excel worksheet, I want to
round off all data to one decimal. It is rather cumbersome to round each
datapoint one by one. Is there a quicker way?