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Exponential growth calculator
Exponential growth
Some things grow or decay in an exponential way. This means that for every time unit (e.g. a day) the metric changes with ± the same percentage.
If you can say "
it doubles every _ days
" => this means it has
exponential growth/increase
! If you can say "
it drops to half every _ days
", it has
logarithmic decay/decrease
!
Data Point 1
Data Point 2
Time in between
sec
min
hour
day
week
month
year
decade
century
Calculate !
Growth calculation
Exponential factor
100 → 110 = multiply by 1.10 (or + 10.00 %) in 1 day(s)
multiply by 1.10 (or + 10 %) in 1
day
multiply by 1.95 (or + 95 %) in 1
week
multiply by 18.16 in 1
month
goes x
2
every 1.04 week(s)
goes x
5
every 2.41 week(s)
goes x
10
every 3.45 week(s)
goes x
100
every 1.59 month(s)
Extrapolation of data points
start point
100
data point
after 6.00 hour
102
interpolation
after 12.00 hour
105
interpolation
after 18.00 hour
107
interpolation
after 24.00 hour
110
data point
after 30.00 hour
113
extrapolation
after 36.00 hour
115
extrapolation
after 42.00 hour
118
extrapolation
after 48.00 hour
121
extrapolation
after 54.00 hour
124
extrapolation
after 60.00 hour
127
extrapolation
after 66.00 hour
130
extrapolation
after 72.00 hour
133
extrapolation
Examples
Carbon-14 has a radioactive half-life of 5730 years
Social Media: Facebook grew from 1 mio MAU in 2004 to 2.32 bil in 2018
Moore's Law: number of transistors on a chip doubles every 2 years (1990-2010)
Growth of people infected by COVID-19 in the USA between 15 and 29 March 2020
Business: month on month double digit growth = x 3.14 per year