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関数電卓

関数電卓を使う

ブラウザで動作 · アップロード不要

このツールとページ内の説明は、現在は英語のみです。動作は同じで、すべてブラウザ内で実行されます。

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History

Your calculations show up here. Select one to use it again. They are forgotten when you leave the page.

    • 何も端末から出ません
    • サーバーによるサイズ制限なし
    • 登録不要・透かしなし
    • 無料

    How to use the scientific calculator

    1. Type a calculation, such as 2(3 + 4)^2 − sin 30, or use the keys.
    2. Choose degrees or radians for trigonometry.
    3. Press = or Enter to keep the answer in the history; "Ans" uses the last answer.

    Order of operations

    Brackets first, then powers (right to left, so 2^3^2 = 2^9), then multiplication and division, then addition and subtraction. A number next to a bracket or a constant is multiplied: 2π, 3(4 + 1). −2^2 is −4, as in maths.

    What you can type

    • + − × ÷ (or * and /), ^ for powers, ! for factorials, % for percent
    • sin, cos, tan, asin, acos, atan, sinh, cosh, tanh
    • sqrt or √, cbrt, ln, log (base 10), log2, exp, abs, round, floor, ceil
    • pi or π, e, and ans for the previous answer

    よくある質問

    How precise are the answers?

    Results are shown to 12 significant digits, which is more than a typical handheld calculator. Tiny floating-point leftovers are cleaned up, so sin 180° shows as 0.

    Is anything sent anywhere?

    No. The calculation happens in your browser, and your calculations never leaves your device.