ANSI B vs ANSI A
ANSI B is 63.5 mm wider and 152.4 mm taller than ANSI A. They are close but not interchangeable: a layout built for one clips or leaves a border on the other.
Compare a Different Pair
ANSI B and ANSI A, Side by Side
| ANSI B | ANSI A | Difference | |
|---|---|---|---|
| Millimetres | 279.4 × 431.8 | 215.9 × 279.4 | 63.5 × 152.4 mm |
| Inches | 11 × 17 | 8.5 × 11 | 2.5 × 6 in |
| Centimetres | 27.9 × 43.2 | 21.6 × 27.9 | |
| Area | 0.121 m², 120,645 mm² | 0.0603 m², 60,322 mm² | 2× |
| Aspect ratio | 1 : 1.545 | 1 : 1.294 | different |
What Is Lost Printing One on the Other
At 100% scale, both centred, nothing resized. A positive figure on the wider or taller side is cropped; on the other it is a blank margin.
| Axis | Gap | ANSI B onto ANSI A | ANSI A onto ANSI B |
|---|---|---|---|
| Width | 31.8 mm (1.25 in) each side | ANSI B loses it | blank band |
| Height | 76.2 mm (3 in) each end | ANSI B loses it | blank band |
Scale-to-Fit Percentages
The figure to type into a printer or PDF dialog to scale one to fit inside the other:
| ANSI A to fit ANSI B | 129% | leaves a thin border on one pair of edges |
|---|---|---|
| ANSI B to fit ANSI A | 65% | leaves a thin border on one pair of edges |
Beyond the Measurements
Envelopes: ANSI B has no standard fitted envelope; ANSI A fits #10, 9 × 12.
Frequently Asked Questions
Is ANSI B bigger than ANSI A?
ANSI B is bigger. It is 279.4 × 431.8 mm against 215.9 × 279.4 mm for ANSI A, about 2 times the area.
What is the difference between ANSI B and ANSI A?
ANSI B is 63.5 mm wider and 152.4 mm taller than ANSI A. They are close but not interchangeable: a layout built for one clips or leaves a border on the other.
Can you print ANSI A on ANSI B?
Not at full size without a change. Shrink ANSI A to 129% to fit ANSI B, which leaves a thin border, or print at 100% and lose 31.8 mm off each side and 76.2 mm top and bottom.
✓ Dimensions per the standards on the ANSI B and ANSI A pages. Differences and scale factors computed. Reviewed . Editorial Process →