Trial – Carbon IN, Carbon OUT

Carbon IN / OUT CALCULATOR

Exhaled Carbon Calculator

Instruction Radio Buttons

INSTRUCTIONS:

This calculator estimates how much carbon your body gains and loses in one day.

STEP 1: Enter your metrics: this will estimate your resting oxygen consumption and carbon dioxide production

STEP 2: Modify the physical activity log: The activity log will appear once you have entered your metrics and is preset to 8hrs of sleep and 16hrs sitting quietly – use the dropdown menus to modify individual hourly increments

STEP 3: Complete the food diary: Select food items from the database or add custom items by entering the macronutrient composition of the food items you consume

STEP 4: Experiment: Modify the physical activity log and food diary to assess the potential impact of the lifestyle changes you are considering

YOUR METRICS

STEP 1: ENTER YOUR METRICS

kg
cm
Diet
Your resting metabolic rate:

Oxygen

Your O₂ consumption at rest:

millilitres per minute

Carbon dioxide

Your CO₂ production at rest:

millilitres per minute

Carbon

Mass of carbon atoms you exhale at rest:

grams per minute
Mass of carbon atoms you exhale at rest:

grams per hour
Mass of carbon atoms you exhale at rest:

grams per day
More info about your resting metabolic rate

What do these numbers mean?

Oxygen consumption

Your resting oxygen consumption is your resting metabolic rate. This is the minimum amount of oxygen your body needs to stay alive and it depends on your age, gender and body composition.

The "gold standard" for determining your resting oxygen consumption is to measure it, however, unless you are a body-builder or have a metabolic disorder, the figure calculated by this page for a person of your age, weight, gender and height is very likely to be within plus or minus 10–15% of your true resting metabolic rate.

Your resting carbon dioxide production

The amount of carbon dioxide your body produces at rest depends on your resting oxygen consumption and on the ratio of carbohydrate to fat your cells are burning. This figure varies throughout the day.

When your cells are burning pure carbohydrates, the volume of carbon dioxide they produce is always exactly equal to the volume of oxygen they consume. When your cells are purely burning fat, however, the volume of carbon dioxide they produce is only 70% of the volume of oxygen they consume.

The difference is due to the different chemical composition of carbohydrates and fat, and it allows physiologists to determine the ratio of the mixture of fuel your body is burning at any given moment. Measuring your oxygen consumption and carbon dioxide production simultaneously, and then dividing your V̇CO₂ by your V̇O₂ gives a result called your respiratory quotient, R.Q.

If you consume a low-carbohydrate ketogenic diet, your respiratory quotient will be closer to 0.7 on average throughout the day. If you consume a mixed diet that includes carbohydrates, your respiratory quotient will be closer to 1 on average.

The calculator on this page uses an RQ of 0.85 for the standard diet, and RQ of 0.75 for the ketogenic diet to calculate your V̇CO₂. You will notice that your oxygen consumption remains the same when you change the type of diet you consume.

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Total mass of carbon atoms you exhale at rest:

g

g

PHYSICAL ACTIVITY LOG

24 hour activity log (expand / collapse )

Activity log is preset to 8 hrs sleep + 16 hrs sitting quietly

Activity log has been customised

Time
Activity

Carbon exhaled

MIDNIGHT
12am-1am

g

1am–2am

g
2am–3am

g
3am–4am

g

4am–5am

g
5am–6am

g
MORNING

6am–7am

g

7am–8am

g

8am–9am

g

9am–10am

g

10am–11am

g

11am–12pm

g
AFTERNOON

12pm–1pm

g

1pm–2pm

g

2pm–3pm

g

3pm–4pm

g

4pm–5pm

g

5pm–6pm

g
EVENING

6pm–7pm

g

7pm–8pm

g

8pm–9pm

g

9pm–10pm

g

10pm–11pm

g

11pm-12am

g

Total mass of carbon atoms you exhale in 24 hours

g


FOOD DIARY

Food Database

g

Time to exhale carbon in this item at rest . . . . . . . . . . . .minutes

Time to exhale carbon in this item at rest . . . . . . . . . . . .hours

minutes

Add a custom food item

g
g
g
g
S.D.
Standard Drinks

Time to exhale carbon in this item at rest . . . . . . . . .minutes

Time to exhale carbon in this item at rest . . . . . . . . .hours

minutes

Section

Total mass of carbon in food diary

g

RESULT = YOU LOST CARBON

RESULT = YOU GAINED CARBON

Your Daily Carbon Balance:

g

g

g
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