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Convert pixel per inch to dot per millimetre

Convert pixel per inch (ppi) to dot per millimetre (dot/mm) instantly. See the formula, a quick table and every other image resolution unit. Free, no ads.

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85 converters, 1,947 units

Common

Length105 unitsWeight and mass85 unitsTemperature9 unitsArea62 unitsVolume83 unitsTime35 unitsSpeed35 unitsPressure57 unitsEnergy73 unitsPower87 unitsForce38 unitsAngle14 unitsFuel consumption (mileage)39 unitsVolume (dry goods)16 units

Everyday

Currency48 unitsLakh, crore, million28 unitsCooking (cups to grams)15 unitsShoe size7 unitsClothing size (women's)6 unitsRing size5 unitsElectric vehicle efficiency7 unitsBlood sugar and lab values5 units

Digital

Data storage61 unitsData transfer rate104 unitsNumber bases (binary, hex)39 unitsText case8 stylesTypography and screen15 unitsImage resolution5 units

Engineering

Acceleration21 unitsAngular velocity12 unitsAngular acceleration6 unitsDensity43 unitsSpecific volume8 unitsTorque and moment of force24 unitsMoment of inertia13 units

Heat

Temperature difference5 unitsSpecific energy (fuel efficiency by mass)18 unitsEnergy density (fuel efficiency by volume)18 unitsThermal expansion5 unitsThermal resistance5 unitsThermal conductivity13 unitsSpecific heat capacity12 unitsHeat density6 unitsHeat flux density25 unitsHeat transfer coefficient9 units

Fluids

Flow rate (volume)68 unitsFlow rate (mass)32 unitsFlow rate (molar)26 unitsMass flux density7 unitsConcentration (molar)14 unitsConcentration (solution)15 unitsViscosity (dynamic)25 unitsViscosity (kinematic)24 unitsSurface tension8 unitsPermeability (water vapour)5 units

Light and sound

Luminance15 unitsLuminous intensity8 unitsIlluminance (lux)9 unitsFrequency and wavelength49 unitsSound level and ratios5 units

Electricity

Electric charge15 unitsElectric current7 unitsVoltage (electric potential)8 unitsElectric resistance9 unitsElectric conductance11 unitsElectric resistivity9 unitsElectric conductivity11 unitsCapacitance20 unitsInductance20 unitsElectric field strength14 unitsLinear charge density6 unitsSurface charge density6 unitsVolume charge density6 unitsLinear current density7 unitsSurface current density7 units

Magnetism

Magnetic flux density12 unitsMagnetic flux10 unitsMagnetic field strength4 unitsMagnetomotive force5 units

Radiation

Radiation dose28 unitsRadiation dose rate26 unitsRadioactivity15 unitsRadiation exposure5 units

Other

Metric (SI) prefixes25 unitsLumber volume17 units

Pixel per inch to dot per millimetre

1 ppi = 0.039370079 dot/mm. Multiply by 0.039370079. 1 dot/mm = 25.4 ppi.

pixel per inch (ppi)dot per millimetre (dot/mm)
10.03937008
20.07874016
50.1968504
100.3937008
200.7874016
501.968504
1003.937008
1,00039.37008

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