Free Online Calculators
Calculate weight per sheet and total stack
This calculator tells you how much a single sheet of paper weighs and the total weight of any stack — useful for printing, mailing, and office planning. It uses the paper's grammage (g/m²) along with the sheet size and quantity. Just enter your paper details and get instant results.
One US Letter sheet of standard 20 lb bond (75.2 gsm) weighs 4.54 g (0.16 oz), and a 500-sheet ream weighs 5.0 lb. An A4 sheet of 80 gsm paper weighs 4.99 g. The chart below converts 60–350 gsm into bond, text and cover pounds.
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| Grammage | Bond / writing | Text / book | Cover | 1 Letter sheet | Ream, 500 Letter | 1 A4 sheet |
|---|---|---|---|---|---|---|
| 60 gsm | 16.0 lb | 40.5 lb | 22.2 lb | 3.62 g (0.13 oz) | 3.99 lb | 3.74 g |
| 70 gsm | 18.6 lb | 47.3 lb | 25.9 lb | 4.22 g (0.15 oz) | 4.65 lb | 4.37 g |
| 75 gsm | 19.9 lb | 50.7 lb | 27.7 lb | 4.52 g (0.16 oz) | 4.99 lb | 4.68 g |
| 80 gsm | 21.3 lb | 54.0 lb | 29.6 lb | 4.83 g (0.17 oz) | 5.32 lb | 4.99 g |
| 90 gsm | 23.9 lb | 60.8 lb | 33.3 lb | 5.43 g (0.19 oz) | 5.98 lb | 5.61 g |
| 100 gsm | 26.6 lb | 67.6 lb | 37.0 lb | 6.03 g (0.21 oz) | 6.65 lb | 6.24 g |
| 105 gsm | 27.9 lb | 70.9 lb | 38.8 lb | 6.33 g (0.22 oz) | 6.98 lb | 6.55 g |
| 120 gsm | 31.9 lb | 81.1 lb | 44.4 lb | 7.24 g (0.26 oz) | 7.98 lb | 7.48 g |
| 135 gsm | 35.9 lb | 91.2 lb | 49.9 lb | 8.14 g (0.29 oz) | 8.98 lb | 8.42 g |
| 148 gsm | 39.4 lb | 100.0 lb | 54.7 lb | 8.93 g (0.31 oz) | 9.84 lb | 9.23 g |
| 176 gsm | 46.8 lb | 118.9 lb | 65.1 lb | 10.62 g (0.37 oz) | 11.70 lb | 10.98 g |
| 200 gsm | 53.2 lb | 135.1 lb | 74.0 lb | 12.06 g (0.43 oz) | 13.30 lb | 12.47 g |
| 216 gsm | 57.5 lb | 145.9 lb | 79.9 lb | 13.03 g (0.46 oz) | 14.36 lb | 13.47 g |
| 250 gsm | 66.5 lb | 168.9 lb | 92.5 lb | 15.08 g (0.53 oz) | 16.62 lb | 15.59 g |
| 270 gsm | 71.8 lb | 182.4 lb | 99.8 lb | 16.29 g (0.57 oz) | 17.95 lb | 16.84 g |
| 300 gsm | 79.8 lb | 202.7 lb | 110.9 lb | 18.10 g (0.64 oz) | 19.95 lb | 18.71 g |
| 350 gsm | 93.1 lb | 236.5 lb | 129.4 lb | 21.11 g (0.74 oz) | 23.27 lb | 21.83 g |
A single 8.5 x 11 sheet of standard 20 lb bond paper weighs 4.54 g (0.16 oz). A 24 lb sheet weighs 5.44 g, and 32 lb premium paper 7.26 g.
24 lb paper is heavier: it has 90.2 gsm against 75.2 gsm for 20 lb bond, so a Letter sheet weighs 5.44 g instead of 4.54 g — 20% more.
A ream of 500 Letter sheets of 20 lb bond weighs 5.0 lb (2.27 kg). The "20 lb" refers to 500 sheets of the 17 x 22 in parent size, which cuts into four Letter sheets each. A ream of 24 lb paper weighs 6.0 lb.
110 lb cardstock is heavier. 65 lb cover has 176 gsm, while 110 lb index has 199 gsm, so a Letter sheet weighs 10.60 g versus 12.00 g. If the 110 lb is cover weight, it has 297 gsm and weighs 17.94 g per sheet.
An A4 sheet of standard 80 gsm paper weighs 4.99 g. At 90 gsm it weighs 5.61 g, at 100 gsm 6.24 g.
20 sheets of 80 gsm A4 paper weigh 99.79 g, so 100 g is 20 sheets. With 70 gsm paper you get 22 sheets.
50 sheets of 20 lb Letter paper weigh 227 g (8.0 oz). 50 sheets of 80 gsm A4 weigh 249 g.
It depends on the grade: 100 lb text has 148 gsm and weighs 8.93 g per Letter sheet, while 100 lb cover has 270 gsm and weighs 16.31 g. At the same pound number, cover stock is always the heavier one.
Whether you're preparing a mailing, planning a print job, or simply curious about the weight of your office paper, our free paper weight calculator gives you instant, accurate results. Enter the paper's grammage, select the size, and specify the number of sheets – the tool instantly calculates the weight per sheet and the total stack weight. No formulas, no guesswork.
The most common way to measure paper weight is by its grammage, expressed in grams per square meter (g/m²). This tells you how much one square meter of that paper weighs. Standard office copy paper is typically 80 g/m², while premium brochure paper or cardstock can range from 150 to 400 g/m².
The grammage alone doesn't tell you the weight of a single sheet, because that also depends on the paper size. An A4 sheet at 80 g/m² weighs approximately 5 grams, while the same paper in A3 format weighs about 10 grams. Our calculator handles all of this automatically.
Using the calculator is straightforward. Simply fill in three values:
The calculator immediately displays the weight of one sheet in grams and the total weight of the entire stack. Results update in real time as you type.
Knowing the weight of paper is more useful than you might think. Here are the most important real-world applications:
You need to mail a 15-page report printed on standard A4 copy paper (80 g/m²). Each sheet weighs 4.99 g, so 15 sheets weigh 74.84 g (2.64 oz). Add the envelope (approx. 5–8 g) and you're at roughly 80–83 g — check which weight step of your postal service that falls into. Switch to Sheet count from weight to see how many sheets fit under a limit such as 1 oz.
A marketing agency orders 1,000 double-sided flyers on 135 g/m² paper, A4 format. That's 1,000 sheets. Each sheet weighs 8.42 g, making the total print run 8.42 kg – crucial for calculating shipping costs to distribution points.
A standard office printer holds up to 500 sheets of A4 paper. At 80 g/m², that paper tray holds approximately 2.5 kg of paper. This information is relevant for understanding the mechanical load on the printer and the weight of a full paper delivery.
Multiply the grammage (g/m²) by the sheet area in square meters. For A4 (0.21 × 0.297 m = 0.06237 m²) at 80 g/m²: 80 × 0.06237 = 4.99 g per sheet. Our calculator automates this for any size or grammage.
Standard copy paper is 80 g/m², which is suitable for most everyday printing tasks. For higher-quality documents, presentations, or letterheads, 90–120 g/m² is commonly used. Brochures and flyers often use 130–170 g/m².
Yes. In addition to standard formats (A3, A4, A5, Letter, Legal), the calculator allows you to input custom width and height measurements, making it suitable for non-standard paper sizes used in specialty printing.
Absolutely. The calculator is 100% free, requires no sign-up, and works directly in your browser on any device – desktop, tablet, or smartphone.
Paper weight (g/m²) refers to mass per unit area, while paper thickness (measured in micrometers or millimeters) refers to physical depth. Heavier paper is generally thicker, but the relationship isn't linear – paper density and manufacturing process also play a role.