This question cannot be answered with the information given. Please specify a unit to convert into centimeters.
Each meter is 100 cm, so two and a half meters in centimeters is 250 centimeters. Try googling "two and a half meters in centimeters."
Two and a half centimeters.
250 centimeters
250 centimeters
The answer depends on what is meant by "two in a half". To most English-speaking people it has no meaning.
500 centimeters
Half as many as in 1594 centimeters.
2.5 in = 6.35 cm
1.27 centimeters
3.5cm
1 meter = 1000 mm, so 2 and a half meters = 2500 mm.
(1/2) inch=1.27 centimeters