"calculator of" is a correct and usable expression in written English.
It can be used to refer to something that is used to calculate a particular thing. For example, "This new app is a useful calculator of mortgage payments."
P-values were calculated using Statcalc calculator of Epi Info 6.02.
The statistical analysis between the groups was carried out using the online scientific calculator of GraphPad (www.graphpad.com quickcalcsttest1.cfm) to calculate mean, SEM and P values.
The 95% confidence interval (CI) of percentages was calculated using the Diagnostic Test Evaluation Calculator of the free-access Interactive Statistical Pages website.
Sample size was calculated with the Cluster Sample Size Calculator of the University of Aberdeen, assuming a standard deviation of.60 and a minimum difference of 2.0 (for individual items); power is set to 80% and level of significance to 5%.
To calculate the Bayes factor, we used the online calculator of Zoltan Dienes (http://www.lifesci.sussex.ac.uk/home/Zoltan_Dienes/inference/Bayes.htm).htm
Kennedy was a supremely cool calculator of interest.
Sample size calculations were performed using the online calculators of Raosoft, Inc.
There have been itinerant calculators of normal intelligence as well.
Don't look to online calculators of "biological age" for an answer.
Individual voters are not rational calculators of self-interest (nobody truly is), and may not be very consistent users of heuristic shortcuts, either.
We aren't cool calculators of self-interest who sometimes go crazy; we're crazies who are, under special circumstances, sometimes rational.
