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Pixel 9a vs Pixel 3a: Size & Dimensions Compared

The Pixel 9a is the larger phone, measuring 3.4mm taller and 3.2mm wider.

Visual Size Overlay

Pixel 9aPixel 3a
154.7mm151.3mm+3.4mm73.3mm70.1mm+3.2mm10mm
Height Δ
+3.4mm
Width Δ
+3.2mm
Thickness Δ
+0.7mm
Case CompatibilityWon't Fit
  • Camera module layout is different — cutout won't align
Screen ProtectorNot Compatible

Screen sizes differ (6.3" vs 5.6") — protector won't fit.

DimensionPixel 9aPixel 3aDifference
Height154.7mm151.3mmPixel 3a -3.4mm (shorter)
Width73.3mm70.1mmPixel 3a -3.2mm (narrower)
Thickness8.9mm8.2mmPixel 3a -0.7mm (thinner)
Weight186g147gPixel 3a -39.0g (lighter)
Screen6.3"5.6"Pixel 3a -0.7" (smaller)

Visual Size Comparison

HeightPixel 9a +3.4mm
Pixel 9a
154.7mm
Pixel 3a
151.3mm
WidthPixel 9a +3.2mm
Pixel 9a
73.3mm
Pixel 3a
70.1mm
ThicknessPixel 9a +0.7mm
Pixel 9a
8.9mm
Pixel 3a
8.2mm

Button & Port Layout

Which is bigger?

The Pixel 9a is the taller phone at 154.7mm (vs 151.3mm). It is also 39g heavier.

Wireless Charging & MagSafe Compatibility

Only one phone supports wireless charging.

  • The Pixel 3a does not support wireless charging. Only the Pixel 9a can use a wireless charger.
SpecPixel 9aPixel 3a
Wireless Charging15WNo
Qi VersionQi
MagSafeNoNo
Built-in MagnetsNoNo

MagSafe cases are NOT cross-compatible between these devices — the case body is shaped to each phone, even though the internal magnet ring may be the same.

Upgrading from Pixel 9a to Pixel 3a?

Different sizes mean your old case probably won't fit. You'll need a new one.

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Frequently Asked Questions

Is Pixel 9a bigger than Pixel 3a?

Yes, the Pixel 9a is 3.4mm taller and 3.2mm wider. The Pixel 9a weighs 186g vs 147g.

Are Pixel 9a and Pixel 3a the same size?

No, the height differs by 3.4mm, width by 3.2mm, and thickness by 0.7mm.