### Percentage calculator

In mathematics, a percentage (from Latin per centum "by a hundred") is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%", or the abbreviations "pct.", "pct"; sometimes the abbreviation "pc" is also used. A percentage is a dimensionless number (pure number). See Wikipedia.

Just fill in other numbers in the form below and press 'calculate'..

Number

As percentage of this number

Result

 %

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### DAP unit converter

With this converter, the dose area product (DAP) can be converted into corresponding values expressed by other units. Use other tool for DAP to effective dose (mSv) conversion. Note: use point in stead of comma as a decimal separator. Input value   from  mGy.cm2 cGy.cm2 dGy.cm2 Gy.cm2 uGy.m2 mGy.m2 Gy.m2 to  mGy.cm2 cGy.cm2 dGy.cm2 Gy.cm2 uGy.m2 mGy.m2 Gy.m2 Simple example with respect to unit conversions: When converting from Gy.cm2 to µGy.m2 the following reasoning can be followed: 1 Gy = 1,000,000 (1 million) µGy; 1 cm2 = 0.0001 m2; this means that 1 Gy.cm2 = 1,000,000*0.0001 µGy.m2 = 100 µGy.m2. Note that some conversions won't result in any change, for example: 1 cGy*cm2 = 1 µGy*m2. DAP values can be translated  into effective dose levels by multiplication using specific conversion factors. For this purpose it is important that DAP value and conversion factor match in terms of their units. The above DAP calcula

### DAP to mSv converter - radiography

This tool calculates the effective dose (mSv) with respect to the DAP value (e.g. cGy.cm2) belonging to different types of radiograph . It does for instance, Gy.cm2 to mSv conversion. It is emphasized that the result is an estimation. The conversion factor relates to ICRP 103 and is obtained from: Radiation risks from medical x-ray examinations as a function of the age and sex of the patient, BF Wall et al., Report HPA-CRCE-028 (2011) ; www.hpa.org.uk Note: use point in stead of comma as a decimal separator. Input value dose area product (DAP) Gy.cm2 mGy.cm2 cGy.cm2 dGy.cm2 Gy.m2

### Website overview

Radiation dose converters DAP unit converter DAP to mSv converter DLP unit converter Effective dose calculator - DLP Dose rate converter Information on quantities and website Dose Area Product (DAP) Effective dose DAP in DICOM header Feedback form About dr Wizard Miscellaneous calculators Age calculator BMI calculator Background topics Image quality Learn more?

### Dose area product (DAP)

Dose Area Product (DAP), is a multiplication of the dose and the area exposed, often expressed in Gy.cm2. Modern x-ray systems are fitted with a DAP meter, able to record accumulated DAP during an examination.

### DLP unit converter

With this converter, the dose length product (DLP) can be converted into corresponding values expressed by other units. Note: use point in stead of comma as a decimal separator. Input value   from     mGy.cm cGy.cm dGy.cm Gy.cm uGy.m mGy.m cGy.m dGy.m Gy.m to     mGy.cm cGy.cm dGy.cm Gy.cm uGy.m mGy.m cGy.m dGy.m Gy.m

### Dose Unit Conversion Tool

For radiation units and conversion factors the following link is useful: dose unit conversion

### Effective dose calculator - CTA-chest

Note 1: use point in stead of comma as a decimal separator. Note 2: currently only for CTA-chest and a rough estimate. Input value dose length product (DLP) mGy.cm cGy.cm dGy.cm Gy.cm Gy.m Result Effective dose mSv