Enter your product type, volume, price, and usage habits to find out how many applications you get per product, how many days it will last, and your cost per application. The Beauty Products Calculator uses real-world efficiency data for mascara, lipstick, foundation, nail polish, and eyeliner — so you can budget smarter and never run out at the wrong moment.
Total Applications
--
Days Product Will Last
--
Cost Per Application
--
Weeks Product Will Last
--
The calculator uses product-specific efficiency values (how much product is used per layer) combined with your product's volume, layers per application, and applications per day. It applies the formula: Number of applications = Efficiency × Volume ÷ Layers per application. Then it divides that by your daily usage to find how many days the product will last.
A standard 10ml mascara tube typically yields around 150–200 applications based on real-world tests, including a famous YouTube experiment where 116 layers were applied to measure usage. With 2 coats once a day, a tube usually lasts around 2–3 months. Results vary based on how many coats you apply and how heavily you load the wand.
Yes! Enter your liquid lipstick's volume, the price you paid, and how many layers you apply per use. The calculator divides the total price by the number of applications to give you an exact cost per use — great for comparing budget and luxury products.
The formula is: Days = (Efficiency × Volume ÷ Layers per application) ÷ Applications per day. Each product type has a different efficiency value based on how much product is dispensed per stroke. Liquid eyeliner is typically used in very thin lines, so a small bottle can last a surprisingly long time.
It depends on volume, layers, and how often you use each. Eyeliner tends to use less product per application than mascara, so a similarly sized eyeliner bottle often outlasts a mascara tube. Use the calculator with both products to compare directly.
Enter your foundation's volume (commonly 30ml to 120ml), the price, and your typical layers per application (usually 1–2). Foundations tend to have higher volumes than mascaras, so they often yield hundreds of applications. A 30ml foundation used once daily with one layer typically lasts around 3–4 months.
Nail polish bottles vary from 5ml to 15ml, and because you apply to 10 nails with 1–2 coats, each full manicure uses a relatively small amount. A typical 10ml bottle can last 40–60 full manicures depending on your technique and number of coats.
Different cosmetic products have very different application efficiencies — the volume consumed per layer varies widely between a mascara wand stroke, a lipstick swipe, and a foundation pump. The calculator uses product-specific efficiency constants derived from real-world usage data to give you accurate estimates.