Use this Energy Requirement Calculator to calculate the energy requirement for grazing activity. Enter the data into the table and then click the Calculate Grazing Activity Energy Cost button. The results will be displayed in the table at the bottom of the page.

1. Enter grazing plus walking time in hours
2. Enter diet quality as total digestible nutrient concentration or organic matter digestibility in %
3. Enter distance traveled in km
4. Enter terrain score (1, 2, 3, 4, or 5, with 1 being nearly level pasture and 5 being mountainous conditions with very steep slopes and extremely rugged topography)

To convert from English to metric system,
enter your values here.
They will be automatically entered into the table to the left.
ME (MJ) to TDN


Grazing factor (multiplied by the ME requirement for maintenance to adjust for the grazing activity energy cost):