A series to square inches
Type a value in A to get it in in² instantly.
193.8in²
That's about the same as an A3 sheet. With ISO proportions that is a sheet of about 297.3 × 420.4 mm (11.7 × 16.55 in).
What it means
How big is that sheet?
ISO 216 sizes are rounded to whole millimeters on real sheets. US sizes are compared by area; their proportions differ from √2.
The math
How to convert A to in²
Area of A n = 2^−n m²; B n = 2^(½−n) m², C n = 2^(¼−n) m². Sides are in the ratio 1 : √2.
Example: A3 A = 193.75 in².
Every unit
That sheet in every system
Tables
A to in² conversion table
| A | in² |
|---|---|
| A0 A | 1,550 in² |
| A1 A | 775.002 in² |
| A2 A | 387.501 in² |
| A3 A | 193.75 in² |
| A4 A | 96.8752 in² |
| A5 A | 48.4376 in² |
| A6 A | 24.2188 in² |
| A7 A | 12.1094 in² |
| A8 A | 6.0547 in² |
| A9 A | 3.02735 in² |
| A10 A | 1.51367 in² |
in² to A conversion table
| in² | A |
|---|---|
| 1.51 in² | A10 A |
| 3.03 in² | A9 A |
| 6.05 in² | A8 A |
| 12.1 in² | A7 A |
| 24.2 in² | A6 A |
| 48.4 in² | A5 A |
| 96.9 in² | A4 A |
| 194 in² | A3 A |
| 388 in² | A2 A |
| 775 in² | A1 A |
| 1,550 in² | A0 A |
Quick answers
Quick answers
- How many in² is A1 A?
- A1 A is 775.002 in².
- How many in² is A10 A?
- A10 A is 1.51367 in².
- How many in² is A3 A?
- A3 A is 193.75 in².
The units
About these units
A series (A)
ISO A sizes: A0 is 1 m², A4 a sixteenth.
Square inches (in²)
Sheet area in square inches.
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