DAILY NO. 34 · VERIFIED MEASUREMENTS

Size It Up answers – October 4, 2026

The five objects from the Size It Up puzzle on October 4, 2026, with the measured size of each, the reference it was compared against, a source you can check, and how the community's guesses landed. Want the surprise first? Replay this puzzle — archived days never touch your streak.

ROUND 1

Diplodocus — 25 m

Answer: a Diplodocus measures 25 m (length / span), which is 1.1× as big as the reference, a Brachiosaurus at 22 m.

Almost half of Diplodocus was tail, which may have cracked like a whip.

How people guessed: across 50 runs the typical guess was 24.4 m — almost exactly right.

Source ↗
ROUND 2

Adult Horse — 2.4 m

Answer: an adult horse measures 2.4 m (length / span), which is 1.1× as big as the reference, a three-seat sofa at 2.2 m.

A riding horse is roughly as long as a dairy cow.

How people guessed: across 50 runs the typical guess was 2.4 m — almost exactly right.

Source ↗
ROUND 3

Smartphone — 14.7 cm

Answer: a smartphone measures 14.7 cm (height), which is about 1.2× smaller than the reference, a stage microphone at 18 cm.

Phones stopped growing at roughly the limit of what a thumb can reach one-handed.

How people guessed: across 50 runs the typical guess was 15.4 cm — almost exactly right.

Source ↗
ROUND 4

The Moon — 3,474.8 km

Answer: the Moon measures 3,474.8 km (length / span), which is about 1.2× smaller than the reference, Australia at 4,000 km.

The Moon’s mean diameter is about 3,475 kilometres.

How people guessed: across 50 runs the typical guess was 4,545.7 km — 31% too large. The most common miss is picturing the Moon far bigger than Australia really allows.

Source ↗
ROUND 5

Hard-Shell Taco — 15 cm

Answer: a hard-shell taco measures 15 cm (length / span), which is almost exactly the same size as the reference, a hot dog at 15 cm.

A hard shell is folded from a flat tortilla, so the shell is as wide as the tortilla was.

How people guessed: across 50 runs the typical guess was 17.1 cm — 14% too large.

Source ↗

Sizes are measured along the axis named in each round and link to their published source. Explore the full library by category, or read how scoring works.