Pan Conversion
Round to Square Pan Conversion
Round-to-square substitutions are common, but radius math is easy to misjudge. Area matching keeps batter depth under control.
Pan Size Converter
Converting a 9×13 to an 8×8aFind out exactly how to scale your recipe and adjust bake time.
Units
9x13" -> 8x8"
x0.55 multiplier
Recipe scaling
scale ingredients down × 0.55
Area ratio: 64 / 117 sq in
Bake time
Decrease bake time by 10–20%
Depth & temp
Batter will be deeper - reduce oven temp by 10-15 °C (25 °F) and check early.
Multiplier is based on pan area. For recipes measured by volume (cups, mL), multiply each ingredient by ×0.55. Always check doneness with a toothpick - oven variations apply.
Popular conversions
What Matters for This Conversion
- - 9-inch round is almost equal to 8x8 square.
- - Area parity is more important than pan shape alone.
- - Depth changes still drive timing and browning differences.
FAQ
Is a 9-inch round the same as an 8x8 square?
Very close in area, so it is a common 1:1 substitute.
Does shape change texture?
Edges and corners can brown differently across shapes.
Should I alter bake time?
Usually only slightly, then adjust by doneness checks.
What about springform vs fixed round?
Area math stays similar; leakage and insulation differ.