TechTools

Radiation Exposure Converter

From
To
Sig. figures:

Coulomb per Kilogram

C/kg

0.000258

Millicoulomb per Kilogram

mC/kg

0.258

Microcoulomb per Kilogram

μC/kg

258

Nanocoulomb per Kilogram

nC/kg

258000

Roentgen

R

1(input)

Milliroentgen

mR

1000

Microroentgen

μR

1.00000e+6

Kiloroentgen

kR

0.001

Hover any row to copy the value or use it as the new input.

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Convert radiation exposure across 8 units: SI (C/kg, mC/kg, μC/kg, nC/kg) and Traditional (R, mR, μR, kR). 1 R = 2.58×10⁻⁴ C/kg (exact, ICRU). Measures ionization in air by X- and gamma rays. Quick-reference: background (≈10 μR/h), chest X-ray (≈25 mR), US occupational limit (≤5 R/year), 1 R ≈ 8.7 mGy ≈ 10 mSv for X-rays. 100% browser-based.

How to Use

  1. 1Type a radiation exposure value in the input field
  2. 2Select your starting unit (R, mR, C/kg, μC/kg, etc.) from the From dropdown
  3. 3Select your target unit in the To dropdown
  4. 4All 8 conversions appear across SI and Traditional groups
  5. 5Hover any row to copy or use as input
  6. 6Click ⇄ to swap From/To units
  7. 7Open the quick-reference table for X-ray doses and occupational exposure limits

Features

  • 8 units: C/kg, mC/kg, μC/kg, nC/kg + R, mR, μR, kR
  • SI and Traditional (Roentgen) groups
  • All 8 conversions shown simultaneously
  • 1 R = 2.58×10⁻⁴ C/kg (exact, ICRU definition)
  • Adjustable sig. figures (3–12)
  • Quick-reference: background radiation, chest X-ray, US occupational limit
  • 100% browser-based - no server

Frequently Asked Questions

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