| Formula | Calculator | Reverse units |
|---|---|---|
| 1 roentgen = 0.000258 ampere second/kilogram | Factors for ampere second/kilogram | |
| 1 roentgen = 0.000258 ampere square meter/joule second | Factors for ampere square meter/joule second | |
| 1 roentgen = 0.000258 coulomb/kilogram | Factors for coulomb/kilogram | |
| 1 roentgen = 258 microcoulomb/kilogram | Factors for microcoulomb/kilogram | |
| 1 roentgen = 0.258 millicoulomb/kilogram | Factors for millicoulomb/kilogram | |
| 1 roentgen = 258000 nanocoulomb/kilogram | Factors for nanocoulomb/kilogram | |
| 1 roentgen = 2.58e+8 picocoulomb/kilogram | Factors for picocoulomb/kilogram | |
| 1 roentgen = 1 rontgen | Factors for rontgen |