Estimation · Chapter 18

Range Combiner

Give a range, not a point. Lows go with lows and highs with highs.

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Opens on Chapter 18’s example: a party: food $300 to $400, drinks $100 to $180, the venue $250.

Do two ranges overlap?
Enter your numbers, then press Calculate.
From the book, Chapter 18. The party: $650 to $830, middle $740. The gala: $6,000 to $15,000; the plain middle is $10,500 but the ladder middle is $9,487. A van that holds 400 to 450 cubic feet against things measuring 350 to 480 overlaps: you could be 80 cubic feet short.

Rounding is half up, the way the book rounds. Numbers can be typed as 1,450, $38, 12%, 1/20, 2.5 million or 3 × 10⁷. Everything stays in your browser: no sign-up, nothing stored or sent.