Feed a Family Planner
Work backwards from your household to the rows and bed size each crop needs.
Use ToolFree calculator
Calories Per Bed Garden Planner
Plan a garden for food rather than money by working out the calories a bed grows, the days of eating it covers and the ground one person needs.
Calories Per Bed Garden Planner
Chlorova · updated for 2026
Calculator
Quick samples
Click “Calculate” to see your results.
Calorie and weight figures are what a well managed intensive home bed of each crop can be expected to produce, and a first attempt, a dry season or poor soil will land below them. Feeding a household on calories alone ignores protein, fat and micronutrient balance, which is why a real pantry plan pairs a calorie crop with beans, grains, fruit and something animal. The one person per year figure is an energy arithmetic rather than a diet, and most subsistence guides build on a mix of crops plus storage, livestock and bought staples such as flour and oil.
A garden planned for food is measured differently from one planned for savings, because the useful unit is calories rather than dollars. Salad leaves earn well at market and feed nobody through February, while a bed of potatoes looks unimpressive on a receipt and covers weeks of eating. This planner converts a crop and a bed count into the energy a season grows, the days of eating that represents, and the unglamorous number of square feet one adult actually needs for a year.
Planning a Garden in Calories
- Choose the calorie crop you intend to grow.
- Enter how many beds you have available.
- Give the growing area of a single bed.
- Set how many plantings the season allows.
- Use a realistic daily calorie need.
- Give the days the harvest must cover.
- Read the season calories grown first.
- Compare days of food with your need.
- Check the ground needed per person.
- Try a second crop to compare density.
- Re run it for beans or grain as well.
- Plan storage before you plan more beds.
Calories per Square Foot and Days of Eating
Each crop carries a seasonal calorie figure per square foot of bed, which is the weight a well run plot yields multiplied by the energy density of that food. Potatoes sit near 580 kcal per square foot, dry beans at 240 despite being far richer per pound, and roots around 130, which is the honest reason a subsistence plan leans on tubers.
Season calories are that figure times total area and the number of plantings. Days of food divides those calories by the daily need you entered, and people fed divides again by the storage window you want the harvest to cover. The reverse calculation is the sobering one: daily need times three hundred sixty five, over calories per square foot, gives the ground that feeds one adult for a year on that single crop.
Worked Example: Four Potato Beds of Thirty Two Square Feet
- Choose potatoes, about 580 kcal per sq ft grown.
- Four beds at 32 sq ft give 128 sq ft planted.
- That ground yields roughly 243 lb of tubers.
- Energy density works out near 305 kcal per lb.
- One bed therefore grows 18,560 calories.
- The whole season grows 74,240 kcal total.
- At 2,000 a day that is 37.1 days of eating.
- It feeds 0.21 people across 180 days.
- Feeding one adult a year needs 1,259 sq ft.
- That is roughly 39 beds of this size.
- You are short 1,131 sq ft for one person.
- Switch the same ground to squash and grow 17,280 kcal.
Calorie Density of Staple Crops
What a competently managed intensive home bed of each crop produces in a season, showing why the staples that fill a pantry are the ones that carry energy per foot rather than per pound.
| Crop | kcal per sq ft | lb per sq ft | kcal per lb | Days to harvest |
|---|---|---|---|---|
| Potato | 580 | 1.9 | 305 | 95 |
| Sweet potato | 390 | 1.0 | 390 | 110 |
| Corn as ears | 400 | 1.2 | 333 | 100 |
| Dry beans | 240 | 0.15 | 1600 | 90 |
| Winter squash | 135 | 0.9 | 150 | 100 |
| Carrots | 130 | 0.7 | 186 | 70 |
Key Terms
- Calorie crop
- A plant grown for energy rather than flavor, such as potato or grain.
- Energy density
- Calories carried per pound of the harvested food as you eat it.
- Season yield
- Total weight a bed produces across one planting of one crop.
- Storage window
- The number of days a harvest must feed people after picking.
- Succession
- Replanting the same bed later in the season for a second harvest.
- Subsistence area
- Ground needed to supply one person, not one meal.
What Serious Pantry Planners Do
- People who genuinely feed a household from land plant by calorie first and flavor second, which is why almost every subsistence guide puts potatoes or grain at the center of the acreage.
- A second planting in the same bed is worth more than another bed built, because the soil, water and fencing cost is already paid and the season often allows a fast root or green.
- Dry beans look hopeless on calories per square foot and indispensable on the table, since a pantry of beans plus rice covers protein that no tuber alone can.
- Storage losses quietly delete a share of every harvest, so a plan that counts the calories grown rather than the calories eaten in March is optimistic by twenty percent at least.
- The one person per year figure is not a challenge to be met in full; most households sensibly grow the expensive crops and buy the cheap ones such as flour, oil and sugar.
Common Mistakes & Fixes
- Planning a pantry from salad leaves and herbs alone.
- Counting calories grown while ignoring storage losses.
- Assuming a first attempt hits published bed yields.
- Comparing crops per pound instead of per square foot.
- Planting every calorie crop and no protein at all.
- Forgetting that squash vines need sprawl room.
- Building beds before water reaches the far one.
- Believing a garden feeds people in July only.
- Measuring success in dollars when aiming at food.
- Growing a calorie crop that nobody in the house eats.
When to Reach for This
Use it when a household is deciding how much ground to prepare for food, when comparing potatoes against squash or beans for limited beds, when planning a pantry that must last past the fresh season, and when a garden looks generous on the table but you want to know how far it really goes. Pair it with the feed a family planner for whole season menus, the garden cost and savings estimator for the money view, the plants per square foot calculator for spacing, and the succession planting calculator to fit a second crop in.
Calories Per Bed Garden Planner: Frequently Asked Questions
How many square feet feed one person?
On a single calorie crop, somewhere between one thousand and one thousand five hundred square feet for a year of eating at two thousand calories a day. Intensive guides quote three hundred to four hundred for a varied diet that assumes bought staples, and that difference is almost entirely grain and oil purchased rather than grown.
Which crop gives the most calories per bed?
Potatoes, comfortably, at roughly five hundred eighty calories per square foot of a season, with sweet potatoes and corn near four hundred. Dry beans carry far more per pound but weigh so little per bed that they rank below, which is why they are grown for protein rather than energy.
Does a second planting really double a bed?
Rarely for calorie crops, since potatoes and squash use the whole frost free season. It works well for fast roots, greens and bush beans, where a spring crop and an autumn crop can each fill half a bed, and the arithmetic here lets you enter the plantings to see the effect.
Why are my calorie numbers optimistic?
Because they count harvest rather than eating, and a pantry loses weight to sprouting, rot, drying and weevils, while a first garden often halves a published yield. Assume a fifth gone, then judge whether the beds you have still cover the season you planned.
Can a garden feed a family on calories alone?
A large one can contribute substantially, but almost nobody does it on vegetable ground alone, since cooking fat, flour and winter protein are hard to grow at household scale. The realistic goal is a grocery bill that bends rather than disappears, plus food whose quality you cannot buy.
Should I plan beds by calories or by what we eat?
Plan by what you actually eat, then check it against calories. A household that eats little potato will not be fed by a potato field, and the useful move is to grow the calorie crop your kitchen already buys, so the harvest replaces real meals rather than aspirational ones.
Sources & Further Reading
- Feeding Your Family from the Garden — University of Maine Cooperative Extension. Bed area, calorie crops and season planning for households.
- How Much Garden Do You Need to Feed a Family? — Almanac and extension planning guides. Square footage per person for a varied vegetable diet.
- Nutrient Content of Common Vegetables, Raw and Stored — USDA FoodData Central. Calories per pound for potatoes, beans, squash and grains.
- The Vegetable Gardener's Guide to Storage and Yield — Extension publication on home food preservation. Storage loss and realistic home bed yields by crop.
Chlorova Gardening Team
Builds, checks and documents every tool we publish
Chlorova editorial review
Checked against extension-service publications
Formula verified against published references · Updated
More popular tools
All toolsNew New Garden Cost and Savings Estimator
Compare what a garden costs to run against the groceries it replaces, including setup amortisation, inputs and the value of your own hours.
Use ToolNew Plants Per Square Foot
Square-foot gardening plant counts for any bed size.
Use ToolNew Succession Planting Calculator
Six staggered sow-and-harvest date pairs from a start date and interval, turning one glut into a season of steady harvests.
Use Tool