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Assuming it is their lengths that you want to measure, centimetres for your feet and millimetres for your toes.
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I would advise consistency - use one or the other but not both. Mixing them like that is not good practice, and you won't find such mixtures used in laboratories and workshops.
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Strictly speaking the metre and the millimetre are the "Preferred Units" but the SI tolerates the centimetre for everyday things like clothes sizes. Please don't shoot the messenger: the metric system and its SI offspring were never designed around human proportions!
What else can I help you with?
What is the metric unit used for measuring the width of a fingernail?
The metric unit used for measuring the width of a fingernail is usually millimeters (mm).
What metric unit would be used to measure the width of a pin?
The width of a pin would typically be measured in millimeters (mm).
What metric unit would you use to measure a football?
Metres, to measure its length or width, square metres to measure its area.
Which metric unit would you use to measure the capacity of a hot water tank?
You would use the metric unit "liters" to measure the capacity of a hot water tank.
What metric unit would you use to measure the width of a house?
Meters or feet are commonly used to measure the width of a house.
What metric unit would you use to measure the width of your math pad?
centimetre
Which metric unit would you use to measure the width of the North Sea?
Kilometres
What is the metric unit used for measuring the width of a fingernail?
The metric unit used for measuring the width of a fingernail is usually millimeters (mm).
What metric unit would be used to measure the width of a pin?
The width of a pin would typically be measured in millimeters (mm).
What metric unit would you use to measure a football?
Metres, to measure its length or width, square metres to measure its area.
What metric unit do you use to measure the width of a common house fly?
I would go with millimetres
What is the best customary unit to measure width of a book?
the metric system
What metric unit would you use to measure the area of your classroom?
The metric unit of the meter would be the appropriate measure of the area of classroom. Calculating area involves multiplying the length (in meters) of the classroom's length and width. Area of the classroom would be in square (^2) meters.
What unit would you use to measure width of a football pitch?
Yards if you work in imperial units or metres if you work in metric units
Which metric unit would you use to measure the capacity of a hot water tank?
You would use the metric unit "liters" to measure the capacity of a hot water tank.
What metric unit would you use to measure the width of a house?
Meters or feet are commonly used to measure the width of a house.
What metric unit is used to measure the width of a page?
Millimetres (or centimetres to one decimal place).
