Health Physics Radiation Conversion Tools Suite

A toolkit for medical/nuclear/radiation workers and students.

Absorbed Dose

Gray (Gy)

Rad

Convert between SI (Gy, mGy, μGy) and traditional (rad, mrad, μrad) units. 1 Gy = 100 rad.

Sievert (Sv)

Rem

Convert between SI (Sv, mSv, μSv) and traditional (rem, mrem, μrem). 1 Sv = 100 rem.

Coulomb/kg (C/kg)

Roentgen (R)

Convert between SI (C/kg, etc) and Roentgen. 1 R = 2.58 × 10⁻⁴ C/kg.

Becquerel (Bq)

Curie (Ci)

Convert between SI (Bq, kBq, MBq, GBq) and Ci, mCi, μCi, nCi, pCi. 1 Ci = 3.7 × 10¹⁰ Bq.

Joule (J)

Electronvolt (eV)

Convert between Joule, eV, keV, and MeV. 1 eV = 1.60218 × 10⁻¹⁹ J.

Working Level (WL)

Mega-electronvolt per Liter (MeV/L)

Convert between Working Levels (WL), Working Level Months (WLM), MeV/L (classic), and SI units (J/m³, J·h/m³). 1 WL = 1.3×10⁵ MeV/L = 2.08×10⁻⁵ J/m³.

Current

Detector Gain (C/R)

Input the detector current and system gain (in C/R). Output is exposure rate in R/h. Example: 0.6 μA, gain 6e-11 C/R → 36 R/h.

Frequency

Wavelength

Converts EM wave frequency (Hz/MHz/GHz) and wavelength (m/cm/mm/nm): λ = c/f, where c = 2.998 × 10⁸ m/s.

x₀

y₀

x₁

y₁

Finds y for a given x along the straight line from (x₀, y₀) to (x₁, y₁).

Quantity	SI Units	Legacy/Other	Conversion
Absorbed Dose	Gy, mGy, μGy	rad, mrad, μrad	1 Gy = 100 rad
Equivalent Dose	Sv, mSv, μSv	rem, mrem, μrem	1 Sv = 100 rem
Exposure	C/kg, mC/kg, μC/kg	R, mR, μR	1 R = 2.58 × 10⁻⁴ C/kg
Activity	Bq, kBq, MBq, GBq	Ci, mCi, μCi, nCi, pCi	1 Ci = 3.7 × 10¹⁰ Bq
Energy	J	eV, keV, MeV	1 eV = 1.602 × 10⁻¹⁹ J
Radon Exposure	J/m³, J·h/m³	WL, WLM	1 WL = 2.08×10⁻⁵ J/m³; 1 WLM = 3.54×10⁻³ J·h/m³