指数计算器/title> <meta name="description" content="具有所示工作和负指数的在线指数计算器。"> <style> .calc input[type=text], .calc input[type=number] { width:100%; padding:5px; } .calc input[type=text]:nth-child(1), .calc input[type=number]:nth-child(1) { vertical-align:top; } .calc textarea { width:100%; font-size:large; } .calc button { font-size:medium; padding:9px 9px; margin:10px auto; } @media all and (max-width: 576px) { .calc { padding:8px; width:100%; font-size:small; } .calc input[type=text], .calc input[type=number] { font-size:x-large; } } @media all and (min-width: 577px) { .calc { padding:15px; width:420px; font-size:small; } }</style>  <link rel="canonical" href="https://www.titaotie.com/calc/math/exponent-calculator.html" /> <script async src="../../assets/js/coun-w3.js" ></script>  <script async src="https://www.googletagmanager.com/gtag/js?id=G-3LS30VWYXF"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); 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</div> <div id="lcol"> <div id="doc">  <p class="doc-update">最后修改时间：2026年5月15日</p> <h1>指数计算器</h1> <p>具有负数支持和步骤的在线<a href="../../math/number/exponent.html">指数</a>计算器。</p> <form name="calcform" autocomplete="off"> <table class="calc"> <tbody> <tr> <td>输入<br>基数）</td> <td>输入<br>指数）</td> <td> </td> </tr> <tr> <td class="math" style="width:120px; vertical-align:bottom;"><input type="text" id="x1" name="x1" class="intext" autofocus></td> <td class="mathsymbol" style="width:70px; padding-bottom:20px;"><input type="text" id="x2" name="x2" class="intext"></td> <td> <select style="display:none"> <option> </option> <option>+</option> <option>--</option> <option>×</option> <option>÷</option> </select> </td> </tr> <tr> <td colspan="3"> <button type="button" title="计算" class="btn" onclick="calc()"><img src="../../assets/lib/icons/glyphicons_all/glyphicons_halflings/glyphicons_halflings_018_cog.png" tppabs="https://www.titaotie.com/assets/lib/icons/glyphicons_all/glyphicons_halflings/glyphicons_halflings-018-cog.png" alt=""> 计算</button> <button type="reset" title="重置" class="btn" onclick="resetb()"><img src="../../assets/lib/icons/glyphicons_all/glyphicons_halflings/glyphicons_halflings_013_remove.png" tppabs="https://www.titaotie.com/assets/lib/icons/glyphicons_all/glyphicons_halflings/glyphicons_halflings-013-remove.png" alt=""> 重置</button> </td> </tr> <tr> <td colspan="3">结果：</td> </tr> <tr> <td class="math" colspan="3"><input type="text" name="y" class="outtext" readonly></td> </tr> <tr> <td colspan="3">计算方式）</td> </tr> <tr id="pf1"> <td colspan="3"><textarea rows="3" name="TA1" class="outtext" readonly></textarea></td> </tr> </tbody> </table> </form> <p>*使用e表示科学计数法。例如：5e3。e-8。.45e12</p> <p>**要从基数和指数结果中找到指数，请使用</a></p> <p><a href="log-calculator.html">对数计算器►</a></p> <h2>指数法律法规</h2> <p><a href="../../math/number/exponent.html">指数</a>计算公式为：</p> <p class="math"><i>a <sup><span style="font-size: 0.8em"> </span> n</sup></i> = <i>a</i> × <i>a</i> × <i>...</i> × <i>a</i></p> <p> n</p> <p>将基数a提升为n的幂，等于a的n倍。</p> <p>例如。</p> <p class="math">2 <sup>5</sup> = 2×2×2×2×2 = 32</p> <h5>乘幂</h5> <p class="math"><i>一为</i><sup><i>Ñ</i> </sup> ⋅i>一</i><sup><i>类</i> </sup> =<i>一为</i><sup><i>Ñ</i> +<i>类</i></sup></p> <p class="mathsymbol">实施例：2 <sup>3</sup> ⋅ <sup>4</sup> = 2 <sup> + 4</sup> = 2 <sup>7</sup> = 128</p> <p> </p> <p class="math"><i>一为</i><sup><i>Ñ</i> </sup> ⋅<i>b <sup>Ñ</sup></i><sup> </sup> =i>一为</i>⋅<i>b</i>sup><i>ñ</i></sup></p> <p class="mathsymbol">实施例：3 <sup>2</sup> ⋅ <sup>2</sup> =⋅sup>2</sup> = 12 <sup>2</sup> = 144</p> <p> </p> <h5>指数除法</h5> <p class="math"><i>a </i><sup><i>n</i> </sup> / <i>a </i><sup><i>m</i> </sup> = <i>a </i><sup><i>n</i> - <i>m</i></sup></p> <p class="mathsymbol">实施例：2 <sup>5</sup> /2 <sup>3</sup> = 2 <sup>-3</sup> = 2 <sup>2</sup> = 4</p> <p> </p> <p class="math"><i>a </i><sup><i>n</i> </sup> / <i>b <sup>n</sup></i><sup> </sup> =i>a</i> / <i>b</i>sup><i>n</i></sup></p> <p class="mathsymbol">实施例：8 <sup>2</sup> /2 <sup>2</sup> =/2 <sup></sup> = 4 <sup>2</sup> = 16</p> <p> </p> <h5>指数平</h5> <p class="math">i>一</i><sup><i>Ñ</i></sup>sup><i>类</i> </sup> =<i>一为</i><sup><i>Ñ</i> ⋅i>类</i></sup></p> <p class="mathsymbol">示例：（2 <sup>3</sup>sup>4</sup> = 2 <sup>⋅</sup> = 2 <sup>12</sup> = 4096</p> <p> </p> <h5>指数格</h5> <p class="math"><sup><i>类</i></sup>√（<i>一</i><sup><i>Ñ</i></sup><i>一为</i><sup><i>ñ</i> /<i>类</i></sup></p> <p class="mathsymbol">实施例：<sup>2</sup> √（2 <sup>6</sup> 2 <sup>/2</sup> = 2 <sup>3</sup> = 8</p> <p> </p> <h5>负指数</h5> <p class="math"><i>a </i><sup><i>-n</i> </sup> = 1 / <i>a </i><sup><i>n</i></sup></p> <p class="mathsymbol">例如 <sup>-3</sup> = 1/2 <sup>3</sup> = 1/8 = 0.125</p> <p> </p> <h5>零指数</h5> <p class="math"><i>一为</i><sup><i> </i> 0</sup> = 1</p> <p class="mathsymbol">示例 <sup>0</sup> = 1</p> <p> </p> <p>请参阅：<a href="../../math/number/exponent.html">指数规则</a></p> <p> </p> <p><a 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