Paper Weight Converter (GSM g/m² ↔ US Bond, Text/Book & Cover Stock lbs)

Convert paper GSM (g/m²) into US lbs Bond, lbs Text/Book, lbs Cover, and caliper thickness.

US Bond / Writing Basis Weight
31.917 lb Bond
US Text / Book Basis Weight (25"×38") 81.07 lb Text
US Cover Cardstock Weight (20"×26") 44.366 lb Cover
Approx. Uncoated Caliper (Points / Mils) 5.76 pt (mil)
Inputs
⚡ Scenarios:
g/m² (GSM)
Paper weight in grams per square meter (GSM; e.g., 75–80 GSM office paper, 120 GSM letterhead, 300 GSM business card).
Results & Graph
US Bond / Writing Basis Weight
31.917 lb Bond
US Text / Book Basis Weight (25"×38")
81.07 lb Text
US Cover Cardstock Weight (20"×26")
44.366 lb Cover
Approx. Uncoated Caliper (Points / Mils)
5.76 pt (mil)

US Bond / Writing Basis Weight

Graph 1 • Paper GSM ↔ US lbs (Bond/Cover) • Domain Architecture & Live Telemetry Maps Paper Grammage Gsm through Paper GSM ↔ US lbs (Bond/Cover) Formula.
MATERIALS & INDUSTRIAL CON US Bond / Writing Basis We 31.917 lb Bond US Text / Book Basis Weigh 81.07 lb Text Paper GSM ↔ US lbs (Bond/Cover) • Component Waterfall US Bond / Writing Basis Weight 31.917 lb Bond US Text / Book Basis Weight (2 81.07 lb Text US Cover Cardstock Weight (20" 44.366 lb Cover Approx. Uncoated Caliper (Poin 5.76 pt (mil)
Graph 2 • US Bond / Writing Basis Weight Across Paper Grammage Gsm Sweep (40% → 160%) Evaluates US_Bond_lbs = GSM / 3.7597; US_Text_Book_lbs = GSM / 1.4802; US_Cove across 7 operating points (current input highlighted).
0 lb Bon 28.09 lb Bon 56.17 lb Bon 12.77 48 19.15 72 25.53 96 31.92 120 38.30 144 44.68 168 51.07 192
Graph 3 • Paper GSM ↔ US lbs (Bond/Cover) Multi-Scenario Envelope Shows how US Bond / Writing Basis Weight responds across ±30% scenario shifts.
0 lb Bon 22.82 lb Bon 45.64 lb Bon 22.34 -30% 27.13 -15% 31.92 +0% 36.70 +15% 41.49 +30%
Summary: 120 GSM paper equals 31.9 lb US Bond (17"×22"), 81.1 lb US Text/Book (25"×38"), and 44.4 lb US Cover stock (20"×26") with ~5.8 mil (pt) thickness.
Summary: 120 GSM paper equals 31.9 lb US Bond (17"×22"), 81.1 lb US Text/Book (25"×38"), and 44.4 lb US Cover stock (20"×26") with ~5.8 mil (pt) thickness.
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Interactive chart & math engine powered by CalculatorGraph

Formula & Mathematical Methodology: Paper GSM ↔ US lbs (Bond/Cover) Formula

USBondlbs = GSM / 3.7597
USTextBooklbs = GSM / 1.4802
USCoverlbs = GSM / 2.7048
US_Bond_lbs = GSM / 3.7597; US_Text_Book_lbs = GSM / 1.4802; US_Cover_lbs = GSM / 2.7048
  • paperGrammageGsm: Paper weight in grams per square meter (GSM; e.g., 75–80 GSM office paper, 120 GSM letterhead, 300 GSM business card).

Rounding: Internal floating-point calculations run in 64-bit IEEE-754 double precision; display values round to 2–4 decimal places.

Worked Example: Paper GSM ↔ US lbs (Bond/Cover) Worked Example

Convert paper GSM (g/m²) into US lbs Bond, lbs Text/Book, lbs Cover, and caliper thickness.

  1. Enter the input measurement, system configuration, or astronomical parameter.
  2. Apply the standard conversion or analytical equation: US_Bond_lbs = GSM / 3.7597; US_Text_Book_lbs = GSM / 1.4802; US_Cover_lbs = GSM / 2.7048.
  3. Inspect the primary metric, secondary equivalents, and 3 real-time SVG graphs.
Result: Computes Paper GSM ↔ US lbs (Bond/Cover) via US_Bond_lbs = GSM / 3.7597; US_Text_Book_lbs = GSM / 1.4802; US_Cover_lbs = GSM / 2.7048.

Frequently Asked Questions

How does the Paper Weight Converter (GSM g/m² ↔ US Bond, Text/Book & Cover Stock lbs) perform the calculation?

It evaluates US_Bond_lbs = GSM / 3.7597; US_Text_Book_lbs = GSM / 1.4802; US_Cover_lbs = GSM / 2.7048 directly in your browser and renders three custom SVG charts in real time.

Can I solve backwards for an input parameter using Goal Seek?

Yes. Click "🎯 Goal Seek" in the results toolbar to solve backwards for any numeric input field.

Does this tool work offline?

Yes. All calculations run 100% locally in your browser with full offline PWA support.

Unit Conversions · Materials & Industrial Conversions

Paper Weight Converter (GSM g/m² ↔ US Bond, Text/Book & Cover Stock lbs): inputs, method, and how to read the result

Convert paper GSM (g/m²) into US lbs Bond, lbs Text/Book, lbs Cover, and caliper thickness.

Choose inputs for the case you are checking

The defaults are illustrative. Replace them with values for your case and keep the units shown beside each field.

  • Paper Grammage Gsm: Paper weight in grams per square meter (GSM; e.g., 75–80 GSM office paper, 120 GSM letterhead, 300 GSM business card).

What the calculation includes

With the default values shown, US Bond / Writing Basis Weight is 31.917 lb Bond. The calculation follows Paper GSM ↔ US lbs (Bond/Cover) Formula; the formula and variable definitions above show how the inputs combine.

One-input check: With the other defaults held constant, changing Paper Grammage Gsm from 120 g/m² (GSM) to 132 g/m² (GSM) changes US Bond / Writing Basis Weight from 31.917 lb Bond to 35.109 lb Bond. This is a comparison inside the calculator's stated model, not a prediction.

Where to use caution

  • Uses official NIST Special Publication 811, IEEE/RFC systems engineering, APA psychometric, and USNO astronomical formulas.
  • Empirical metallurgy and calendar conversions represent standard reference-condition approximations.

Scope: Global NIST, IEEE, APA & Astronomical Standard Check the assumptions and limitations against your situation before relying on the estimate.

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