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Paper Quantity Converter
Convert between sheets, quires, reams, bundles, bales, cartons, and pallets. Calculates paper weight and stack height by paper type and GSM.
Paper Quantity Converter
Sheets⧉
500.00
Converted from Reams (500 sheets)
Total Sheets⧉
500
Base unit for all paper quantities
Reams⧉
1.00
1 ream = 500 sheets
Cartons⧉
0.10
1 carton = 10 reams = 5,000 sheets
Weight⧉
2.26 kg (5.0 lbs)
US Letter 75 gsm paper
Stack Height⧉
50.0 mm (1.97 in)
At 0.1 mm per sheet
Paper Unit Hierarchy
| Unit | Sheets | = Reams | Weight (20 lb paper) |
|---|---|---|---|
| Sheets | 1 | 0.00 | 0.0 kg |
| Quires (25 sheets) | 25 | 0.05 | 0.1 kg |
| Reams (500 sheets) | 500 | 1.00 | 2.3 kg |
| Bundles (1,000 sheets) | 1,000 | 2.00 | 4.5 kg |
| Bales (5,000 sheets) | 5,000 | 10.00 | 22.6 kg |
| Cartons (10 reams / 5,000) | 5,000 | 10.00 | 22.6 kg |
| Pallets (40 cartons / 200,000) | 200,000 | 400.00 | 904.8 kg |
Paper Weight Comparison
| Paper Type | GSM | Thickness/sheet | Ream weight (Letter) |
|---|---|---|---|
| Copy paper (20 lb / 75 gsm) | 75 | 0.1 mm | 2.26 kg |
| Bond paper (24 lb / 90 gsm) | 90 | 0.11 mm | 2.71 kg |
| Cardstock (65 lb / 176 gsm) | 176 | 0.23 mm | 5.31 kg |
| Cover stock (80 lb / 216 gsm) | 216 | 0.28 mm | 6.51 kg |
| Index card (110 lb / 300 gsm) | 300 | 0.38 mm | 9.05 kg |
Planning notes, formulas, and examples
About the Paper Quantity Converter
Paper is measured in a unique hierarchy of quantity units — sheets, quires, reams, bundles, bales, cartons, and pallets — that predates the metric system by centuries. A ream (500 sheets) is the standard purchase unit, but print shops, publishers, and office managers regularly need to convert between all levels of this hierarchy, plus calculate the physical weight and stack height of their paper orders.
The weight and thickness of a paper stack depend on the paper type: standard 20 lb copy paper (75 gsm) is much thinner and lighter than 65 lb cardstock (176 gsm). Knowing the weight is essential for shipping cost estimation, and knowing the stack height matters for storage planning and binding operations.
This converter handles all seven paper quantity units, calculates weight in kg and lbs based on selectable paper types, estimates stack height, and provides comparison tables for both the unit hierarchy and paper weight specifications. It's built for print buyers, office managers, warehouse staff, and anyone ordering paper in bulk.
When This Page Helps
Paper ordering involves more than converting sheets to reams. Buyers also need shipping weight, stack height, and paper-type context. This page keeps those quantity, weight, and storage calculations in one place instead of treating paper like a generic unit conversion problem, which makes it more useful for print purchasing, warehousing, and production planning.
How to Use the Inputs
- Select your input unit (sheets, quires, reams, bundles, bales, cartons, or pallets).
- Enter the quantity or click a preset for common order sizes.
- Select your target output unit.
- Choose your paper type to calculate accurate weight and thickness.
- Read the converted quantity, total sheets, weight, and stack height.
- Consult the unit hierarchy table for all equivalences at a glance.
- Compare paper types in the weight comparison table.
Formula used
1 Quire = 25 sheets
1 Ream = 500 sheets = 20 quires
1 Bundle = 1,000 sheets = 2 reams
1 Bale = 5,000 sheets = 10 reams
1 Carton = 5,000 sheets = 10 reams
1 Pallet = 200,000 sheets = 400 reams = 40 cartons
Weight = sheets × sheet area (m²) × GSM ÷ 1,000 (kg)Example Calculation
Result: 15,000 sheets (30 reams)
3 cartons × 5,000 sheets/carton = 15,000 sheets = 30 reams. At 75 gsm on US Letter, this weighs about 67.8 kg (149.4 lbs).
Tips & Best Practices
- When ordering for a print job, convert your total pages (impressions) to reams, then round up to the nearest carton for bulk pricing.
- Standard copy paper (75 gsm) is about 0.1 mm per sheet — a ream is about 50 mm (2 inches) tall.
- Paper weight in the US ("20 lb bond") is not the same as metric GSM. Use the comparison table to translate.
- For shipping estimates, a pallet of paper weighs about 900 kg (2,000 lbs) for 20 lb copy paper.
- Always order 5–10% extra sheets to account for printer waste and test prints.
Paper Quantity History
The ream originated in the Arabic word "rizmah" (bundle) and entered English via Medieval trade routes. The original ream was 480 sheets (20 quires of 24), called a "short ream." The modern 500-sheet ream became standard in the 20th century for manufacturing convenience.
US Paper Weight vs GSM
The US uses "basis weight" — the weight of 500 sheets at a specific basis size. Different paper categories have different basis sizes, making comparison confusing. GSM (grams per square meter) is universal and unambiguous.
| US weight | Basis size | GSM | Common name | |---|---|---|---| | 20 lb | Bond (17×22) | 75 | Copy paper | | 24 lb | Bond (17×22) | 90 | Letterhead | | 60 lb | Text (25×38) | 89 | Book text | | 65 lb | Cover (20×26) | 176 | Cardstock | | 80 lb | Cover (20×26) | 216 | Heavy cover | | 110 lb | Index (25.5×30.5) | 199 | Index cards |
Storage and Logistics
A standard 48×40 inch pallet holds 40 cartons (200,000 sheets / 400 reams). Maximum stack height for most warehouses is 3 pallets. When planning a large print run or office supply order, knowing the pallet count directly determines your storage requirements and freight cost.
Sources & Methodology
Last updated:
Frequently Asked Questions
500 sheets. This has been the standard since the 20th century. Historically, a ream was 480 sheets (a "short ream").
A quire is 25 sheets — one-twentieth of a ream. The term comes from bookbinding, where a quire was a set of folded sheets forming a section of a book.
A ream of standard 20 lb copy paper (75 gsm, US Letter) weighs about 2.26 kg (5 lbs). A ream of 65 lb cardstock weighs about 5.31 kg (11.7 lbs).
It means 500 sheets of 17×22 inch (bond basis size) weigh 20 pounds. After cutting to letter size, a ream weighs about 5 lbs. The GSM equivalent is about 75 gsm.
A ream of standard 20 lb copy paper is about 50 mm (2 inches) tall. Heavier stocks are thicker, so the same 500 sheets will make a noticeably taller stack.
Both equal 5,000 sheets (10 reams). "Carton" is more common in office supply; "bale" is used in paper mill and wholesale contexts.
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