http://www.webmd.com/diet/healthtool-food-calorie-counter Calorie counters like that are very reliable. Your girlfriend is just trying to make you live longer, just embrace it.
The websites that you can find calorie burn calculators include Calorie Count, WebMd and Health Status. Other places to find calorie burn calculators include My Dr and Self.
The community based http://www.thecaloriecounter.com/ is a mountain of knowledge. You simply type the food you are going to eat and you will all the nutritional information for the product.
HP calculators are very reliable and easy to use, even I own one. HP is also a good brand that offers a lot of different kind of calculators, ask the seller if it is good or not.
freedieting.com has a selection of weight loss calculators including calorie calculators, weight gain and weight loss calculators along with a Body mass indicator calculator.
No, pineapple is not a negative calorie food.
what is calorie
It depends on the type of food. Some foods are calorie dense while others are low calorie.
Loan Consolidation Calculators give the loanee information on how consolidating his or her loans will affect both their loan payment, loan balance, total interest, and time to repay the loans. Overall, these calculators seem to be reliable and are great tools for recent graduates before or during repayment.
Yes BMI index calculators are very reliable. You can find information about them at the following sites...www.cdc.gov/healthyweight/assessing/bmi/ or www.webmd.com/diet/features/how-accurate-body-mass-index-bmi
There are calorie calculators to help. Here is one: www.freedieting.com/tools/calorie_calculator.htm
Calorie Calculators can not be accurate because we are all unique and burn calories at different rates. When you use a calorie calculator it returns a best guess for the amount of calories you will burn during the day. If you don't do exercises properly you may not burn as many calories as someone who uses better form. As well if you measure to large (or small) of a portion, then you will over or underestimate your caloric intake.
1 food calorie (Cal) = 4.184 kilojoules (kJ)