Don't put too much stock in calculators to determine caloric intake. A much more reliable method is to track your current intake, activity and scale weight over a period of time. Naturally, try to keep intake and activity constant, if scale weight is maintained, then you know your maintenance needs. If it goes up or down, you can adjust accordingly.
James 1:16-17 ESV
Do not be deceived, my beloved brothers. Every good gift and every perfect gift is from above, coming down from the Father of lights
With God's help...Mens sana in corpore sano