Planning several days of meals is easier when you translate a menu into a measurable food quantity. The Velora Foods Weekly Meal Prep Quantity Calculator estimates how much prepared food a household or meal-prep group needs from its size, planning period, meals per person and average cooked portion weight. It also supports optional cooking yield, trimming loss, buffer, pack-size and ingredient-cost estimates.
Use the calculator to plan batch cooking, weekly grocery purchases, household portions or food-service preparation. Enter values that describe the same food and the same planning period. The result is a practical quantity estimate—not a nutrition prescription or a guarantee of the amount any person will eat.
Weekly Meal Prep Quantity Calculator
Enter your planning details below. Start with the number of people, days and meals, then choose the portion-weight unit. Yield, pack and cost fields are optional; leave them blank when you only need the cooked quantity.
Results are estimates based on the values you enter. Nothing you type is sent to or stored on our servers.
What This Weekly Meal Prep Calculator Estimates
The main result is the total cooked food mass required for all planned meal portions, including any extra preparation allowance. When you provide yield assumptions, the calculator works backward from that cooked target to estimate the raw ingredient weight to purchase. If you also enter a pack size and price per kilogram, it estimates whole packs and an indicative ingredient cost.
- Planned meal portions across all people and days.
- Base cooked food weight before the extra allowance.
- Additional weight added by the preparation buffer.
- Total cooked food target for the full planning period.
- Estimated trimmed raw weight and raw purchase weight using your yield inputs.
- Whole-pack purchasing quantity and optional estimated ingredient cost.
How to Use the Calculator
1. Set the household size and planning period
Enter the number of people who will eat the prepared meals and the number of days you want to cover. The tool accepts up to 500 people and 31 days per calculation. For a shorter prep cycle, enter only the days you intend to prepare at once rather than automatically using seven.
2. Enter meals per person per day
Choose how many meals each person will receive from this batch each day. For example, two planned meals per person per day over five days for four people creates 40 meal portions. If you are preparing only lunches, enter one meal per person per day.
3. Set the cooked portion weight and unit
Enter the average cooked food weight for one meal portion. The unit selector supports grams, kilograms, ounces and pounds, and the calculator converts the selected unit to grams before applying the formula. Use a representative serving weight for the food being planned. Do not mix raw ingredient weights with cooked portion weights.
4. Add an optional preparation allowance
The buffer is a percentage added to the base cooked quantity. It can help account for small serving variations or an occasional extra portion. A 5% buffer increases a 10 kg base target to 10.5 kg. A larger buffer does not automatically make a plan better: consider appetite, leftovers, storage space and the perishability of the food.
5. Add cooking and trimming yield when estimating raw purchases
Cooking yield is the cooked weight remaining as a percentage of trimmed raw weight. Trimming yield is the usable raw weight remaining after bones, skin, stems, peel or other preparation losses are removed. Enter measured yields from the same ingredient and cooking method where possible. If you leave either field blank, the calculator assumes 100% for that stage, which means no loss is applied.
6. Estimate packs and ingredient cost
Enter an optional pack size in grams to round the raw purchase quantity up to whole packs. Enter an optional purchase price per kilogram and select the matching currency to estimate cost. The cost estimate uses the rounded purchase quantity when a pack size is supplied; otherwise it uses the calculated raw purchase quantity. Keep the entered price and currency consistent with the ingredient being purchased.
Formula and Calculation Method
The calculator uses a sequence of transparent quantity relationships. It first determines the number of meal portions, then multiplies that count by the cooked portion mass. The preparation allowance is applied to the cooked target before yield losses are reversed.
Step 1: Calculate the number of meal portions
Meal portions = people × days × meals per person per day.
Step 2: Calculate the base cooked food weight
Base cooked weight (g) = meal portions × cooked portion weight (g). If you enter ounces, pounds or kilograms, the selected unit is converted to grams first.
Step 3: Apply the preparation buffer
Cooked target (g) = base cooked weight × (1 + buffer percentage ÷ 100). The extra allowance is the difference between the cooked target and the base cooked weight.
Step 4: Estimate raw purchase weight
Trimmed raw weight (g) = cooked target ÷ (cooking yield ÷ 100). Raw purchase weight (g) = trimmed raw weight ÷ (trimming yield ÷ 100). Both yield percentages must be greater than zero and no greater than 100.
Step 5: Round to packs and estimate cost
Number of packs = round up(raw purchase weight ÷ pack size). Rounded purchase weight = number of packs × pack size. Estimated cost = purchase weight in kilograms × price per kilogram.
Worked Example: Meal Prep for Four People
Suppose four people need two prepared meals per day for five days. Each cooked portion weighs 350 g, the preparation allowance is 5%, cooking yield is 75%, trimming yield is 90%, and the ingredient is sold in 1,000 g packs at $8.50 per kilogram.
- Meal portions: 4 × 5 × 2 = 40 portions.
- Base cooked weight: 40 × 350 g = 14,000 g (14 kg).
- Preparation allowance: 14,000 g × 5% = 700 g.
- Cooked food target: 14,000 g + 700 g = 14,700 g (14.7 kg).
- Trimmed raw weight: 14,700 g ÷ 0.75 = 19,600 g (19.6 kg).
- Raw purchase weight: 19,600 g ÷ 0.90 ≈ 21,778 g (21.78 kg).
- Pack quantity: round up 21.78 kg to 22 one-kilogram packs.
- Estimated ingredient cost: 22 kg × $8.50 = $187.00.
This example shows why the cooked quantity and the raw shopping quantity are not always the same. The 14.7 kg cooked target is the amount planned for meals; the larger raw purchase estimate accounts for cooking and trimming losses. Your own yield measurements may produce a different result.
Understanding the Results
Cooked food to prepare
Use this as the target amount of prepared food for the planned meals, including the buffer. It is most useful when you portion food after cooking or compare the result with the capacity of your containers.
Raw purchase quantity
This is an estimated buying quantity based on the yield percentages you entered. It is not a universal conversion factor: meat cuts, vegetables, grains, cooking methods and moisture loss can produce very different yields.
Pack planning and estimated cost
Pack rounding is useful when an ingredient is sold in fixed package sizes. It may create a small surplus because a whole pack must be purchased. The cost output is an ingredient estimate only; it does not automatically include delivery, tax, labor, energy, seasoning, packaging or other overhead.
Accuracy, Food Safety and Practical Limitations
For the most useful estimate, weigh a representative cooked portion and record the actual raw and cooked batch weights. Calculate yield from the same ingredient, preparation method and cooking process you intend to repeat. Recalculate when the ingredient supplier, cut, recipe, equipment or cooking time changes. Rounded package labels and estimated portions introduce uncertainty.
Plan storage as carefully as quantity. Divide cooked food into suitable shallow containers, cool and refrigerate or freeze it promptly, and follow current local food-safety guidance for safe cooling, storage duration and reheating. Do not prepare a large buffer simply because the calculator allows one; avoidable leftovers can increase food waste.
This calculator is intended for general meal-preparation and purchasing estimates. It does not assess dietary adequacy, allergies, medical conditions or individual protein and energy requirements. For personal nutrition advice, consult a qualified healthcare or nutrition professional.
Frequently Asked Questions
How much food should I prepare for a week?
Multiply the number of people by the days covered, meals per person per day and cooked portion weight. Add a modest buffer only when it reflects your actual serving pattern. The calculator performs this multiplication and shows the result in kilograms and grams.
Should I enter raw or cooked portion weight?
Enter cooked portion weight because the main result represents prepared food ready to portion. Use the optional cooking and trimming yield fields to estimate how much raw ingredient to buy before preparation.
What is the difference between cooking yield and trimming yield?
Cooking yield compares cooked weight with trimmed raw weight after cooking loss. Trimming yield compares usable trimmed raw weight with the amount originally purchased. They describe separate stages, so enter both only when you have suitable measurements.
What happens if I leave the yield fields blank?
The calculator assumes 100% yield for a blank stage. In practice, this means no loss is applied at that stage, so the raw purchase estimate may be lower than your real requirement if trimming or cooking losses occur.
Can I use ounces or pounds instead of grams?
Yes. Select grams, kilograms, ounces or pounds in the portion-weight unit field. The calculation converts the entered portion weight to grams before calculating the batch quantity.
Does the cost estimate include every meal-prep expense?
No. It estimates ingredient cost from the raw purchase quantity and price per kilogram. Add other expenses separately if you need a complete meal-prep budget or food-business cost model.
Related Velora Foods Calculators
For more detailed planning, use the Weekly Protein Prep Calculator to estimate protein batch weights, the Meal Prep Container Calculator to estimate container needs, and the Grocery List Cost Calculator to total shopping costs. You can also explore the Meal Planning Tools collection.
Calculation Notes and Disclaimer
The equations and assumptions are displayed so readers can check how the result is produced. The calculator runs in the visitor’s browser; values entered into the form are not submitted to Velora Foods for calculation. Results depend on the accuracy of the supplied portion, yield, pack and price inputs. Verify important quantities against your own recipe trials, supplier specifications and food-safety procedures.