Enter your age:

Enter your resting heart rate:

Enter either your lower limit percentage or upper limit percentage in decimal form and click on Calculate:
[Lower limit percentage, such as 55%, 60% (e.g., .55, .60)]
[Upper limit percentage, such as 70%, 85% (e.g., .70, .85)]

Click calculate to see your respective Target Heart Rate Range:
               Your result: Beats per Minute

FEMALE
Female Target Heart Rate Range
Enter your age:

Enter your resting heart rate:

Enter either your lower limit percentage or upper limit percentage in decimal form and click on Calculate:
[Lower limit percentage, such as 55%, 60% (e.g., .55, .60)]
[Upper limit percentage, such as 70%, 85% (e.g., .70, .85)]

Click calculate to see your respective Target Heart Rate Range:

               Your result: Beats per Minute

calculator METS TO O2 CONSUMPTION
What is the relative oxygen consumption of 9 METs?
This is really asking what is the oxygen consumption of someone exerting themselves at 9 times resting level. Energy cost of sitting quietly is about 3.5 ml O2/kg/min, which is 1 MET:
(You can substitute the '9' with other numbers.)

Relative oxygen consumption is the oxygen consumed per kg of body weight per minute. It is reported in units of ml O2/kg/min. Every person has a maximum oxygen consumption, which is commonly given as a rating of physical fitness. Higher VO2max, as it is called, shows better fitness. Beyond the VO2max, the exerciser can no longer deliver oxygen in steady state and anaerobic metabolism kicks in to keep up the workload for a limited time.

calculator O2 CONSUMPTION TO METS
How do you convert relative oxygen consumption to METS?
Simply divide relative oxygen consumption by 3.5 ml O2/kg/min

Answer should be 4.54 METs

calculator O2 CONSUMPTION TO KCAL/MIN
How many calories burned per minute from relative oxygen consumption?
The key is to convert ml O2/kg/min to Liters consumed per minute ... a human being burns about 5 kcal per Liter. The example below is for a 200 lb person.

Final answer should be 7.2 in kcal/minute or calories/minute
(15.89 ml O2/kg/min X 200/2.2046233 lbs/kg X 5 kcal/Liter X .001 L/ml)

calculator KCAL/MIN TO O2 CONSUMPTION
What is your relative oxygen consumption at a given kcal/minute?
In the expression below you can replace the '7' (kcal value) and the '200' (lb body weight) values:

7 kcal/min X 1000 ml/L X (1 Liter/5 kcal) X (2.204623 lbs/kg)/200 lbs
=15 ml O2/kg/min

calculator O2 CONSUMPTION STEPPING
What is your relative oxygen consumption for stepping exercise?
In the expression below you can replace the '8' (step height inches) and the '40' (steps per minute -- remember both horizontal & vertical) values:

Horizontal component = stepping rate X .35 ml O2/kg/min
Vertical component = step height (meters) X step rate X 2.39 ml O2/kg/min
(Resting component is installed as part of each of the vertical and horizontal components)

1 inch = .0254 meters
40 steps/min X .35 ml O2/kg/min + 8 inches X .0254 meters/inch X 40 X 2.39 ml O2/kg/min = 33.4 ml O2/kg/min

calculator KCAL PER MINUTE STEPPING
How many kcal/minute burned during stepping?
In the expression below you can replace the '8' (step height inches), the '40' (steps per minute -- remember both horizontal & vertical), and the '137' (weight in lbs) values:

40 steps/minute X .35 ml O2/kg/min + 8 inch step height X .0254 meters/inch X 40 steps/minute X 2.39 ml O2/kg/min X 137 lbs/2.204623 lbs/kg * 5 kcal/Liter O2 consumed X .001 Liters/ml = 20 kcal/min

calculator O2 CONSUMPTION TREADMILL WALK
What is the relative oxygen consumption of walking 3 mph at a 3% treadmill grade?
In the expression below we are adding a resting component, horizontal component and a vertical component of oxygen consumption:

In this formula you can replace '3.0' (both mph)
and .03 (percent grade) with your numbers.
Resting component = +3.5 ml O2/kg/min
Horizontal component = Speed (meters/min) X .1 ml (O2/kg/min)/(m/min)
Vertical component = Grade X speed m/min X 1.8 ml O2/kg/min
1 mph = 26.8224 meters/minute.
Horizontal component oxygen consumption = .1 ml (O2/kg/min)/(m/min)
Vertical component oxygen consumption = 1.8 ml O2/kg/min/(m/min)

3.5 + (3.0 *26.8224)*.1 +.03 * (3.0 *26.8224) * 1.8 = 15.89
EXAMPLE answer in the equation should read 15.89 (ml O2/kg/min)

calculator KCAL PER MINUTE TREADMILL WALK
How many kcal/minute burned during walking on treadmill?
In the expression below we are adding a resting component, horizontal component and a vertical component of oxygen consumption and converting to kcal/minute (about 5 kcal per Liter O2 consumed for total body weight -- 200 lb in this example):

In this formula you can replace '3.0' (both horizontal and vertical mph)
and .03 (percent grade) and 200 (body weight in lbs) with your numbers.
Resting component = +3.5 ml O2/kg/min
Horizontal component = Speed (meters/min) X .1 ml (O2/kg/min)/(m/min)
Vertical component = Grade X speed m/min X 1.8 ml O2/kg/min
1 mph = 26.8224 meters/minute.
Horizontal component oxygen consumption = .1 ml (O2/kg/min)/(m/min)
Vertical component oxygen consumption = 1.8 ml O2/kg/min/(m/min)
Conversion to kcal/per min (200 lbs/2.204623 lbs/kg) * 5 kcal/L* .001 L/ml

(3.5 + (3.0 *26.8224)*.1 +.03 * (3.0 *26.8224) * 1.8) * (200/2.204623)*5*.001 =7.2
EXAMPLE answer in the equation should read 7.2 kcal

calculator O2 CONSUMPTION RUN/JOG TREADMILL
What is your relative oxygen consumption for a run/jog on treadmill?
In the expression below you can replace the '6.0' (mph in horizontal and vertical component) and the '.03' (grade).

Resting component = 3.5 ml O2/kg/min
Horizontal component = Speed (meters/min) X .2 ml (O2/kg/min)/(m/min)
Vertical component = Grade X speed (m/min) X .9 ml O2/kg/min
1 mph = 26.8224 meters/minute.
Horizontal component oxygen consumption = .1 ml (O2/kg/min)/(m/min)
Vertical component oxygen consumption = 1.8 ml O2/kg/min/(m/min)

3.5 + (6.0 * 26.8224 * 0.2) + (.03 * 6.0 * 26.8224 * 0.9) = 40.0 ml O2/kg/min

EXAMPLE answer in the equation should read 40.0 ml O2/kg/min

calculator KCAL PER MIN RUN/JOG TREADMILL
How many kcal/minute burned during in run or jog on treadmill?
In the expression below we are adding a resting component, horizontal component and a vertical component of oxygen consumption and converting to kcal/minute (about 5 kcal per Liter O2 consumed for total body weight -- 200 lb in this example) You can replace the '6.0' (mph in horizontal and vertical component) the '.03' (grade), and the '200' (weight in lbs) values:

Resting component = 3.5 ml O2/kg/min
Horizontal component = Speed (meters/min) X .2 ml (O2/kg/min)/(m/min)
Vertical component = Grade X speed (m/min) X .9 ml O2/kg/min
1 mph = 26.8224 meters/minute.
Horizontal component oxygen consumption = .2 ml (O2/kg/min)/(m/min)
Vertical component oxygen consumption = 0.9 ml O2/kg/min/(m/min)
Conversion to kcal/per min (200 lbs/2.204623 lbs/kg) * 5 kcal/L* .001 L/ml

3.5+(6.0*26.8224*0.2)+(.03*6.0*26.8224*0.9)*(200/2.204623)*5*.001 = 18 kcal per minute

EXAMPLE answer in the equation should read 18 kcal/min