Nov 4, 2017




This app is designed for use by people already familiar with the ketogenic diet and lifestyle. It complements other nutrition or fitness apps – it is not a general nutrition app but only includes a calculator which gives the ketogenic ratio of meals when one enters the grams of macronutrients (carbs, protein and fats). Thus when planning meals with KetoCalc, one first needs to determine the total number of macronutrients with another general nutrition/fitness app (such as with the free app "LoseIt!"). One can easily go back and forth between such an app and ours to see the ketogenic ratio of meal plans.

Urine ketosticks are known to yield notoriously inaccurate results, while blood tests can be painful and expensive, breath ketone analyzers can be even more expensive. All of these tools only let you see if your food was ketogenic AFTER your meals, while KetoCalc lets you PRE-PLAN ketogenic meals per meal or on a daily basis.

Playing with KetoCalc a few times according to our simple instructions is the best way to learn what a real ketogenic meal looks like – at a one time cost less than that of a box of ketostix.

OTHER KETOGENIC RATIO CALCULATORS USE A FLAWED FORMULA which adds protein and carbs together in a ratio against fat, but carbs and protein do not contribute equally to the degree of anti-ketosis. This popular simplified formula can result in underestimating the amount of protein needed to maintain muscle mass for a given ketogenic ratio, but KetoCalc uses a well-tested and well documented formula developed by award winning researcher Rollin T. Woodyatt M.D. We have confirmed the accuracy of his formula with spreadsheets, and blogs contain ketogenic diet success stories using the KETOCALC app affirming the accuracy of the ketogenic ratio that the app yields.

MAINTAIN KETOSIS WITHOUT EXCEEDING THE CALORIE LEVEL OPTIMAL FOR YOUR WEIGHT LOSS GOAL – Not everyone knows that too many calories (even from low-carb sources) can stall weight loss or may cause weight gain in ketogenic diets. Our simple calculator lets one easily adjust the macronutrient amounts to plan ketogenic meals without exceeding one's desired calorie level.

DO NOT LET THE SIMPLICITY OF THIS APP FOOL YOUSee our clear 4-step process now to learn all you need to know to accurately pre-plan ketogenic meals. These simple instructions eliminate the room for failure by not only ensuring ketosis but also ensuring that one avoids the three pitfalls of weight loss listed below on a ketogenic diet (in the case weight loss is desired and not only ketosis for its therapeutic benefits).

AVOID THE THREE PITFALLS OF WEIGHT LOSS ON YOUR KETOGENIC DIET Many people who use low carb diets to lose weight have found that after a period on what they thought was a ketogenic diet, they stalled or even re-gained weight. But following our simple instructions ensures your success by preventing you from:

  1. Eating too much protein even from low carb sources
  2. Eating too many calories even from low carb sources
  3. Eating too little fat which can prevent ketosis

REMAIN IN KETOSIS EVEN IF YOU SLIP AND GET BACK ON TRACK FASTER Few people know that even if one eats too many carbohydrates at a meal, it is still possible to maintain ketosis by eating a larger amount of fat. This is definitely not recommended, as the excessive number of calories can prevent weight loss or lead to weight gain in the long run. But in the case that one may "accidentally" slip just one time (for example, by "accidentally" wolfing down that pie slice), KetoCalc can let one calculate how much fat to eat to retain the health benefits of not going out of ketosis. By eating more fat and remaining in ketosis, one can also start losing weight again sooner as one maintains the body’s fat burning adaptation. Otherwise, even going out of ketosis occasionally, according to researcher Dr. Stephen Phinney, requires another three week adaptation period. Since Ketocalc yields the total number of calories in addition to yielding a ketogenic ratio, this lets one adjust the amount of macronutrients in a meal plan to both maintain ketosis and a desired calorie level optimal for weight loss or for maintaining one's ideal weight.

The app works offline and  fast without advertisements.

Feel free to email if you have questions. We will respond promptly.

Oct 27, 2017


Pre-Plan Ketogenic Meals with KetoCalc

When planning meals according to the instructions below, one needs to determine the total number of macronutrients with another general nutrition/fitness app (such as the free app "LoseIt!"). One can then easily switch to KetoCalc to enter the macronutrient amounts and see how ketogenic one's meal is.

You can use KetoCalc for meal planning either for each meal or for the whole day. After a few days of playing around with the calculator as described here, you will know what a real ketogenic meal looks like. The example at the end will further clarify this 4 step procedure.

Step 1 - Determine and Enter Your Protein Amount

Before beginning to use KetoCalc, you will need to determine your appropriate protein amount for each meal based on your weight, sex and activity level. General diet/fitness apps such as 'Lose It!' will let you determine this amount as well as yielding macro totals from meals to enter into KetoCalc, but we recommend following the advice of Donald Layman, Ph.D., professor emeritus of nutrition at the University of Illinois and winner of the Shannon Award from the National Institute of Health, who has determined that all adults must have at least 30 grams of protein 3 times a day at separate meals, to maximize muscle synthesis and prevent muscle atrophy. A ketogenic diet that is too high in protein and fat may become excessively high in calories, so, to prevent weight gain or to lose weight, most people would want the lowest amount of protein that is still adequate, which, according to Layman, would be 30 grams per meal 3 times a day for the average-sized adult not exercising heavily. This would look like a 4 oz hamburger patty, a single chicken breast, or 4 - 5 eggs.

Thus when using KetoCalc, most people would determine their ideal protein level one-time as described. It is best to always first enter this fixed protein amount into the calculator when planning any meal, while you may vary the carbohydrate and fat levels.

Step 2 - Determine Your Caloric Requirement

People wanting to lose weight need to be aware that eating too many calories even from low-carb sources while in ketosis can stop weight loss or cause weight gain. Thus, before beginning to use KetoCalc, in addition to determining your fixed ideal protein amount, you will need to determine the fixed calorie level which will let you reach or maintain your desired weight with your general diet/fitness app. KetoCalc will let you plan ketogenic meals not exceeding your ideal calorie goal per meal by displaying both the total number of calories and the calories separately form protein, fats and carbs. This lets you adjust the amount of carbohydrates and fats to both maintain ketosis and your desired calorie level at the same time.

Step 3 - Enter Your Carbohydrate Amount

After having entered your protein amount into KetoCalc, enter an amount for the carbohydrates. If you want to be ketogenic, it is recommended that the carbohydrate amount is low starting with 20-30 grams.

Step 4 - Keep Adjusting the Amount of Fat

Keep entering different fat levels until your ketogenic ratio becomes preferably 2 or higher (Dr. Woodyatt recommends a keto-ratio >=2.00 as explained here). Then check your total calories, and if they are too high, keep adjusting the fat and carbohydrate amounts until you have BOTH the correct number of calories AND a ketogenic ratio >= 2 (ideally).

As you repeatedly use the calculator, you will develop the dietary strategy that will work best for you and yield the best long-term results.

An Example

Let's say that you've decided to have a simple meal of four ounces of fish, a green salad and four tablespoons of olive oil on your salad.

First you would determine the amount of protein in the meal. You can download and use any general nutrition/fitness app to look up and see that four ounces of meat would have about 30 grams of protein (the ideal amount for most people as explained above). You would then switch to KetoCalc and enter the 30 grams in the protein field of the calculator.

Next you would look up and determine the amount of carbohydrate in the meal. The only carbohydrate in this meal would be about 5 grams coming from the salad. You would switch to KetoCalc and enter the 5 grams in the calculator's carbohydrate field.

Finally you would enter the four tablespoons of olive oil into the tablespoon to gr converter field of KetoCalc, which would yield 53 grams of fat. You would enter this amount into the fat field of the calculator.

After pressing 'Calculate,' you would see your ketogenic ratio as 2.23 for this meal, which is highly ketogenic. If you had originally entered only 1 tablespoon of oil into the tablespoon to gr converter field of KetoCalc, this would have yielded a keto-ratio of only 1.09, which is almost not ketogenic. So you would have had to go back and keep increasing the number of tablespoons of oil until the calculator gave a ketogenic ratio of ideally 2 or greater.

If you desired your meal to be even more ketogenic, you may further increase the amount of oil in your salad (taking care to not exceed your ideal calorie level) and/or take out high-carb vegetables such as tomatoes or carrots, go back, and re-calculate your ketogenic ratio.

Trying different figures with your calculator will let you quickly get the hang of it.


When using KETOCALC, as you re-adjust the protein, carbohydrate and fat amounts to let the app calculate your ketogenic ratio again, going back with the back arrow on the action bar on top will erase all previously entered macronutrient amounts, but using the back arrow at the bottom of your phone will leave previously entered values intact.

Mar 24, 2017


And Why We Believe It is the Most Accurate

What are Ketogenic Diets and Why They are Used

Ketogenic diets are characterized by minimized intake of carbohydrates. When the amount of carbohydrates is low enough in relationship to the fat in the diet, this causes the body to start producing molecules called 'ketones' from fat which the body uses for energy instead of glucose. This is known as being in 'nutritional ketosis,' which means that the body is in fat-burning mode.The more ketogenic a diet is, the more it utilizes the burning of fat for metabolism rather than glucose. Ketogenic diets have been demonstrated to have the ability to trigger burning fat without the loss of muscle mass (Ackerson, n.d,), and reviews of the medical research literature report a wide range of additional health benefits from ketogenic diets (Paoli, Rubini, Volek & Grimaldi, 2013). Some of these health benefits include eliminating or improving diabetes (Saslow et al,, 2017), cancer (Klement, 2017), as well as as well as improving neurological function and helping eliminate or improve epilepsy (Neal et al., 2009) or psychiatric disorders (Ede, 2017).

In modern times, aggressive efforts by the pharmaceutical industry to popularize drug treatments have caused many to ignore the existence of side-effect-free natural approaches to managing diabetes, epilepsy and a growing number of other diseases. In the pre-medication era, the effectiveness of ketogenic diets in helping with such disorders was first demonstrated in the 1920’s by Rollin T. Woodyatt, M.D. (Root, 1955). Woodyatt's research caused him to receive the 1948 Banting Medal for Scientific Achievement, which is the highest scientific award of the American Diabetes Association (American Diabetes Association, n.d.).

The Formula

For treating diabetic or epileptic patients, Dr. Woodyatt developed and used a formula which yields a ketogenic ratio for accurately pre-planning ketogenic meals. Woodyatt first published this formula in his paper "Objects and Methods of Diet Adjustments in Diabetes" (Woodyatt, 1921). This formula has since then been embraced and used by many researchers such as Collens & Shelling (1927). Zilberter (2011) is another such researcher who explains:
“... Woodyatt (1921) suggested the following equation for calculating KD composition:
KR = (0.46 pg + 0.90 fg):(1.0 cg + 0.58 pg + 0.1 fg)
Where KR is “ketogenic ratio,” g is grams, P is protein, F is fat, and C is CHO.
Wilder and Winter (1922) defined the threshold of ketogenesis explaining it from the standpoint of condition where either ketone bodies or glucose can be oxidized. They arrived, together with Shaffer and Woodyatt, at the conclusion that KR for induction of ketogenesis should be 2:1 or higher.
This is a very important point, not only methodologically, but also ideologically. The KR invariably indicates whether the CHO proportion is low enough for allowing the fat-mobilizing pathway and ketogenesis, or high enough for blocking it and supporting glycolysis instead." 
Thus, as can be seen by Woodyatt's formula above, how ketogenic one's food is depends on varying amounts of contribution from ketogenic macronutrients (portions of protein and fat) versus glucogenic macronutrients (portions of carbohydrate, protein and fat).

A Simplified Faulty Approach

Woodyatt's formula acknowledges that proteins, fats and carbohydrates make different contributions to the degree of ketosis, but many mistakenly use another popular keto-ratio formula which wrongfully assumes that protein is equally anti-ketogenic as carbohydrate. This simplified faulty approach adds protein and carbs together in a ratio against fat, which can cause one to easily underestimate the amount of protein needed to maintain adequate muscle mass for a given ketogenic ratio. Popular web-based calculators using this flawed approach include KetoCalculator, described in a paper published in the journal Epilepsia (Zupec-Kania, 2008). As explained here, the ketogenic ratio that KetoCalculator yields "is the relationship between grams of fat to the combined grams of protein and carbohydrate," an incorrect assumption that may underestimate the amount of protein which may harm especially growing children.

Does Woodyatt's Formula Have Shortcomings?

Woodyatt's formula can only calculate a ketogenic ratio based on the ketogenic/glucogenic attributes in food, while one's actual level of ketosis would depend on one's individual metabolism (how much glucose and fat the body actually burns). In the case that one consumes less calories than one burns for energy, some of the fat burnt would be coming from the body's own storage reserves instead of from food, which can cause one's actual degree of ketosis to be higher than the ratio for the food indicated by Woodyatt's formula. For example, an obese man can be put on what is called a 'protein sparing fast' for a few days, meaning he only eats protein three times a day and nothing else. He could end up in deep ketosis due to burning a lot of fat coming from his own body's storage reserves only instead of from food, despite the Woodyatt formula not showing ketosis based on his fat-free diet. But since the actual degree of ketosis can only be greater than that indicated by Woodyatt's ratio and cannot be less, the formula can still not cause one to believe one is ketogenic when one is not. In summary, if one is using up the body's stores for fat, one can only be more ketogenic than the amount Woddyatt's formula indicates, never less.

The research literature contains papers which point out the above, stating that Woodyatt's ketogenic ratio can indicate the actual degree of ketosis only in "isocaloric conditions" where the amount of calories consumed equals the amount of calories one's body burns (Cohen, 2009). Such papers have suggested adjustments to the original formula which we have not implemented due to their controversial and possibly inaccurate nature.

While Woodyatt's formula lets one accurately PRE-PLAN ketogenic meals, conventional tools such as urine tests, painful blood tests or expensive breath ketone analyzers let one see if one is in nutritional ketosis AFTER one's meals. The Internet contains independently posted modern-day success stories (Korsunsky, 2016) utilizing Woodyatt's formula using the KetoCalc app.


Ackerson, C. (n.d.). Will I Lose Muscle on a Ketogenic Diet? Retrieved October 26, 2017, from

American Diabetes Association. (n.d.). Banting Medal for Scientific Achievement. Retrieved October 26, 2017, from

Cohen, I. (2009). A model for determining total ketogenic ratio (TKR) for evaluating the ketogenic property of a weight-reduction diet. Medical Hypotheses, 73(3), 377-381. Retrieved October 26, 2017, from

Collens, W. S., & Shelling, D. H. (1927). A Simple Method For Deriving The Formula For A Diabetic Diet. JAMA: The Journal of the American Medical Association, 88(6), 396. Retrieved October 26, 2017, from

Ede, G. (2017, June 30). Ketogenic Diets for Psychiatric Disorders: A New 2017 Review. Psychology Today. Retrieved October 26, 2017, from

Klement, R. J. (2017). Beneficial effects of ketogenic diets for cancer patients: a realist review with focus on evidence and confirmation. Medical Oncology, 34(8), 132. Retrieved October 26, 2017, from

Korsunsky, D. (2016, September 20). Stories of Transformation – Hobie Simons & The Ketogenic Ratio. Retrieved October 26, 2017, from

Neal EG, Chaffe H, Schwartz RH, Lawson MS, Edwards N, Fitzsimmons G, Whitney A. & Cross JH. (2009). A randomized trial of classical and medium-chain triglyceride ketogenic diets in the treatment of childhood epilepsy. Epilepsia, 50(5) , 1109–1117. Retrieved October 26, 2017, from

Paoli, A., Rubini, A., Volek, J. S., & Grimaldi, K. A. (2013). Beyond weight loss: a review of the therapeutic uses of very-low-carbohydrate (ketogenic) diets. European Journal of Clinical Nutrition, 67(8), 789–796. Retrieved October 26, 2017, from

Root, H. F. (1955). Dr. Rollin Turner Woodyatt. Transactions of the American Clinical and Climatological Association, 66, liv–lv. Retrieved October 26, 2017, from

Saslow, L. R., Mason, A. E., Kim, S., Goldman, V., Ploutz-Snyder, R., Bayandorian, H., … Moskowitz, J. T. (2017). An Online Intervention Comparing a Very Low-Carbohydrate Ketogenic Diet and Lifestyle Recommendations Versus a Plate Method Diet in Overweight Individuals With Type 2 Diabetes: A Randomized Controlled Trial. Journal of Medical Internet Research, 19(2), e36. Retrieved October 26, 2017, from

Westman, E. C., Yancy, W. S., Mavropoulos, J. C., Marquart, M., & McDuffie, J. R. (2008). The effect of a low-carbohydrate, ketogenic diet versus a low-glycemic index diet on glycemic control in type 2 diabetes mellitus. Nutrition & Metabolism, 5, 36. Retrieved October 26, 2017, from

Woodyatt, R. T. (1921). Objects And Method Of Diet Adjustment In Diabetes. Archives of Internal Medicine, 28(2), 125-141. Retrieved October 26, 2017, from

Zilberter, T. (2011). Carbohydrate-Biased Control of Energy Metabolism: The Darker Side of the Selfish Brain. Frontiers in Neuroenergetics, 3. Retrieved October 26, 2017, from

Zupec-Kania, B. (2008). KetoCalculator: A web-based calculator for the ketogenic diet. Epilepsia, 49, 14-16. Retrieved October 26, 2017, from

May 20, 2016


(Before reading this post, we recommend reading our simple 4 step instructions to understand the process described below)

Last night, I saw a picture of a wedding cake and thought about the usefulness of KetoCalc for those who had slipped and wanted to get back on track as fast as possible without going through the keto-adaptation period again. Then I found myself facing with a slightly similar situation. I was craving a nice, full bowl of yogurt but it had 15 grams of carbs. I had been mostly ketogenic for many months, having lost weight from 275 lbs to my current weight of 165 lbs. If I went out of ketosis, I did not want my body to require another period of adaptation before burning ketones again.

So I put my macros in the calculator. The yogurt had 14 grams of fat, 15 grams of carbohydrate, and 9 grams of protein. I added in 25 grams of whey protein bringing the total protein up to 34 grams. That gave me a keto-ratio well below 1 which is not ketogenic. So I went back (using the back arrow at the bottom of my Android to leave my previously entered values intact) and kept increasing the fat amount in the calculator until the ketogenic ratio was over 2. I did this by putting in different numbers of tablespoons of oil into the Tablespoon to Gram Converter field of the calculator and adding the oil amount in grams to the 14 grams of fat in my yogurt, re-entering the total amount of fat and pressing calculate again. I first put in 3 tablespoons of oil into the Tablespoon to Gram Converter field which yielded 40 grams of oil to add, giving me 54 grams of total fat, which yielded a ketogenic ratio of 1.60 – still too low. Then I tried 5 tablespoons of oil to add (67 gr.) yielding 81 grams of total fat, and got a ketogenic ratio of 2.07. I was happy with this ratio. This is how I determined how much additional oil or fat was needed for my meal to remain ketogenic.

Please be advised to do the above as rarely as possible, as the excessive number of calories may lead to weight gain.