The scoring curve, written out
Howbigle scores a guess by the ratio of your scale to the published size, not by a raw number of feet. Over-guessing and under-guessing by the same factor earn the same score. Within 6% of the true size you get a perfect 100. After that the curve is smooth: there is no sudden drop at 6.1%. A double and a half both score 36. Around five times the true size (or one-fifth of it) scores 8, approaching 0. Five daily rounds make a total out of 500.
The formula is round(100 × exp(−1.6 × max(0, |ln(guess ÷ actual)| − ln(1.06)))). After you lock in, the reveal shows “You were 1.30× the true size” (or 0.87×, and so on) together with that round’s score.
| Your guess as a factor of the true size | Score |
|---|---|
| Exact | 100 |
| 1.06× or 0.94× (6%) | 100 |
| 1.1× or 0.91× | 94 |
| 1.25× or 0.80× | 77 |
| 1.5× or 0.67× | 57 |
| 2× or 0.50× | 36 |
| 3× or 0.33× | 19 |
| 5× or 0.20× | 8 |
| 10× or 0.10× | 3 |
The slider uses a logarithmic range so a hummingbird and a mountain can live in the same control. That also means small finger movements can be coarse; the + and − buttons are there so a perfect score is actually reachable on a phone.
Every object carries a source note. Many animal figures are typical adult values with a published range, and the note will say so. Exact sporting and engineering figures, such as a 50-meter pool or a 100-yard football field, are labeled as exact.
Your streak and best score
Howbigle does not ask you to log in. Your daily result, your streak, and your best total live in this browser’s local storage. Clearing the site’s data, or switching devices, will erase them. Unlimited practice does not change your daily score or streak.
Play today’s five ↗A few things you might wonder
Is Howbigle the same as Size It Up?
No. Howbigle is an independent daily size-estimation game with original silhouettes, its own scoring, and a public-fact item bank. It is not affiliated with Size It Up, Magnitudle, or GriddleLink Games.
How is my score calculated?
A guess within 6% of the published size scores 100. Beyond that, the score falls smoothly with the absolute log-ratio of your guess to the true size, so doubling and halving are equal mistakes. A guess twice the true size scores 36; around five times the true size scores 8. Five daily rounds make a total out of 500.
When does the daily puzzle change?
At midnight in the eastern United States (America/New_York), including daylight-saving changes. Unlimited practice is available at any time and does not change your daily score or streak.
Where do the sizes come from?
From public facts such as encyclopedia entries and published specifications. Each reveal includes a short note and a source link. Typical values and ranges are labeled as such. The figures are for a casual game, not for technical work.
Do I need an account?
No. Your daily scores and streak are saved in your browser on this device. Clearing the site’s data will reset them.