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Decay Calculator
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Environmental Health and Safety
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Radiation Safety
> Decay Calculator
Radiation Decay
Unit Converter
Radioisotope
Select
Am-241
Au-198
Ba-133
Bi-207
Br-82
C-14
Ca-45
Cd-109
Cl-36
Co-57
Co-60
Cr-51
Cs-137
Cu-64
Eu-152
F-18
Fe-55
Fe-59
Ga-67
Gd-153
H-3
I-123
I-125
I-129
I-131
In-111
Ir-192
K-42
Kr-85
Lu-177
Mn-54
Mo-99
N-13
Na-22
Na-24
Ni-63
P-32
P-33
Po-210
Pu-239
Ra-226
Rb-86
Ru-106
S-35
Se-75
Sn-113
Sr-90
Tc-99
Tc-99m
Th-229
Th-230
Tl-201
Tl-204
U-233
U-234
U-235
U-236
Y-90
Zn-65
Initial activity:
Select
Ci
mCi
uCi
MBq
kBq
Bq
UNIT
AMOUNT
Select "Time" or "Hours" before to continue
Select
kCi
Ci
mCi
uCi
GBq
MBq
kBq
Bq
Decay by time:
kCi
Assay date:
Day
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31
Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Ci
Final date:
Day
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
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20
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29
30
31
Month
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
mCi
µCi
Decay by hours:
GBq
Number of hours:
MBq
kBq
Bq
Half life:
Final activity:
Copyright © June 2008 University of Toronto
Not to be reproduced without the written permission of the Office of Environmental Health and Safety
215 Huron Street, Toronto, Ontario, Canada M5S 1A2
Hector Rocca
