Metric example
Είσοδος Area 120 m², roughness factor 1.15, waste rate 10%, primer 10 m²/L ×1 coat, 16 L can, 98 USD, top coat 12 m²/L ×2 coats, 15 L can, 145 USD
Έξοδος Required paint 40.48 L / 3 cans / $388.00 / leftover 5.52 L
Υπολογιστής Ποσότητας Βαφής, Αριθμού Δοχείων & Εκτιμώμενου Κόστους
Εισαγάγετε την επιφάνεια, τις στρώσεις, την τραχύτητα του υποστρώματος, το ποσοστό φύρας και την κάλυψη ανά προϊόν για να υπολογίσετε την απαιτούμενη ποσότητα βαφής, τον αριθμό των δοχείων και το εκτιμώμενο κόστος με μία κίνηση.
Ένας πρότυπος υπολογιστής κατάλληλος τόσο για B2C όσο και για B2B. Τα m²/ft², L/gal και η εναλλαγή νομίσματος είναι ενσωματωμένα από την αρχή.
Εναλλαγή μεταξύ m²/ft² και L/gal από την αρχή
Υπολογίστε μαζί κάλυψη, στρώσεις, τραχύτητα και φύρα
Χρησιμοποιήστε εναλλαγή νομίσματος και URL κοινής χρήσης για παγκόσμιες ομάδες
How to use
- Choose the unit system, then select the currency and enter the area.
- Set the substrate roughness factor and waste rate. Use a preset if it fits.
- Add one row per product and enter coverage, coats, pack size, and unit price.
- Review required paint, can count, estimated cost, and leftover, then copy the result or share the URL.
Formulas
Each row is calculated independently and then summed. Can count is always rounded up.
- Required paint per row = area × coats × roughness factor × (1 + waste rate) ÷ coverage
- Can count = ceil(required paint ÷ pack size)
- Order quantity = can count × pack size
- Leftover = order quantity - required paint
- Estimated cost = can count × unit price
Παραδείγματα υπολογισμών
Imperial example
Είσοδος Area 2,500 ft², roughness factor 1.10, waste rate 10%, exterior finish 400 ft²/gal ×1 coat, 5 gal can, 119 USD
Έξοδος Required paint 7.56 gal / 2 cans / $238.00 / leftover 2.44 gal
Γλωσσάρι
- Area
- The surface area you plan to paint. Enter it in m² or ft².
- Coverage
- The manufacturer's guideline for how much area one unit of paint can cover.
- Coats
- The number of times the same product is applied, such as primer, intermediate, or top coat passes.
- Roughness factor
- A multiplier that increases the required amount when the substrate is uneven or absorbent.
- Waste rate
- A percentage allowance for splatter, roller holdout, and leftover in the container.
- Pack size
- The purchase size per can or pail. The tool rounds up to this unit.
Σημειώσεις
Αυτό το εργαλείο παρέχει εκτιμήσεις σχεδιασμού. Ακολουθείτε πάντα τις συνθήκες του έργου και τις προδιαγραφές του κατασκευαστή.
- The actual amount changes with substrate condition, weather, humidity, and application method.
- Can count is rounded up, so leftover is expected in many cases.
- Check whether the product coverage is listed before dilution or after dilution before you enter it.
Συχνές ερωτήσεις
Should I enter coverage in m²/L or ft²/gal?
Match the selected unit system. When you switch the unit system, the area, coverage, and pack size are easier to keep aligned in the same unit family.
What should I use for the roughness factor?
Use about 1.00 for a smooth substrate and 1.10 or higher for absorbent or uneven surfaces, then adjust to the product sheet and site conditions.
Why is can count rounded up?
Paint is usually bought in whole cans or pails, so the calculator rounds up to the smallest purchasable unit that covers the need.
Can I switch currencies?
Yes. You can switch between JPY, USD, EUR, and other common currencies so the same estimate can be reviewed in different markets.
Can a share URL reproduce the same inputs?
Yes. The share URL button copies a URL that includes the current state.