Farming & Agriculture
Calculators for farmers and homesteaders: seeding rate, livestock water, hay bales, pasture stocking rate, chicken feed and silage, so you plan inputs and herds.
Bee Sugar Syrup Calculator
Mix sugar syrup for feeding bees. Choose a 1:1 spring or 2:1 fall ratio by weight, enter sugar or a target weight, and get the water in pounds and cups.
Chicken Feed Calculator
Find how much feed a flock needs. Enter birds, ounces per bird per day, days and bag size to get total ounces, pounds and whole bags of feed to buy.
DLI Calculator
Calculate Daily Light Integral (DLI) from PPFD and photoperiod. Enter your light level and hours per day to get DLI in mol per square meter per day.
EC to PPM Calculator
Convert EC to PPM and back for hydroponic nutrient solutions. Pick the 500, 640 or 700 TDS scale to match your meter and read the matching reading.
Grow Light Coverage Calculator
Estimate the grow area an LED light covers from its wattage. Pick a growth stage to set watts per square foot and get coverage in sq ft and sq m.
Hay Bale Calculator
Find how many bales of hay you need. Enter animal count, daily hay per animal, days and bale weight to get total pounds and whole bales to buy.
Hive Honey Stores Calculator
Estimate a hive's honey stores from its total weight. Subtract equipment and bee weight to see pounds of stores and whether it meets a winter minimum.
Honey Harvest Calculator
Estimate your honey harvest from capped frames. Enter the number of frames, the frame size and how full they are to see pounds of honey and 1 lb jars.
Hydroponic Nutrient Calculator
Work out how much nutrient concentrate to add to a hydroponic reservoir. Enter tank size and the dose per gallon to get total mL and mL per part.
Livestock Water Calculator
Find daily and total water for a herd. Pick an animal type or enter gallons per head, set the head count and days, and get daily and total gallons.
Pasture Stocking Rate Calculator
Find how many animal units a pasture supports, or the acres a herd needs. Enter forage per acre, utilization, intake and grazing days for a planning estimate.
Seeding Rate Calculator
Find how much seed you need for a field. Enter acres and pounds per acre to get total seed in pounds, plus an optional cost estimate from your seed price.
Silage Calculator
Find how much silage is in a bunker or pile. Enter length, width, height and density to get volume in cubic feet, total pounds and tons of feed.
Varroa Mite Count Calculator
Turn an alcohol or sugar wash into a varroa infestation level. Enter mites counted and bees in the sample to get mites per 100 bees and the 3% threshold.