diff --git a/src/assets/js/navTools.js b/src/assets/js/navTools.js
index 108deff..f0c4b08 100644
--- a/src/assets/js/navTools.js
+++ b/src/assets/js/navTools.js
@@ -11,7 +11,7 @@ let navTools = {
                 // 工具标题
                 title: '计算下载用时',
                 // 工具简介
-                desc: '根据设定的文件大小和下载速度简单计算大约下载完成所需的时间',
+                desc: '根据设定的文件大小和下载速度简单计算大约下载完成所需的时间。',
                 // 组件名称
                 component: 'CalcDownloadTime',
                 // 更新时间
@@ -20,8 +20,12 @@ let navTools = {
                 enabled: false
             },
             'ratio': {
-                title: '计算比例',
-                component: 'CalcRatio'
+                title: '比例计算',
+                desc: '按设定的比例计算给出的数值所对应的数值。',
+                component: 'CalcRatio',
+                update: '2021-11-14',
+                version: '1',
+                enabled: true
             },
             'simple': {
                 title: '简易计算器',
@@ -35,13 +39,15 @@ let navTools = {
         list: {
             'links': {
                 title: '生成批量下载链接',
-                desc: '根据设置，生成有一定规律的用于批量下载的链接',
+                desc: '根据设置，生成有一定规律的用于批量下载的链接。',
                 component: 'GenLinks',
-                enabled: false
+                update: '2021-11-14',
+                version: '1',
+                enabled: true
             },
             'random-str': {
                 title: '生成随机字符串',
-                desc: '生成随机组合的字符串，可用于密码',
+                desc: '生成随机组合的字符串，可用于密码。',
                 component: 'GenRandomStr',
                 update: '2021-05-04',
                 version: '1',
@@ -68,9 +74,11 @@ let navTools = {
             },
             'timestamp': {
                 title: 'Unix 时间戳转换',
-                desc: 'Unix 时间戳转时间 / 时间转 Unix 时间戳',
+                desc: '时间戳转时间 / 时间转时间戳',
                 component: 'ConvertTimestamp',
-                enabled: false
+                update: '2021-11-14',
+                version: '1',
+                enabled: true
             },
         }
     },
@@ -84,13 +92,13 @@ let navTools = {
             },
             'dynmap-renderdata-gen': {
                 title: 'Dynmap renderdata 生成',
-                desc: '生成用于 Minecraft Dynmap 插件 / 模组的 renderdata 数据',
+                desc: '生成用于 Minecraft Dynmap 插件 / 模组的 renderdata 数据。',
                 component: 'MinecraftDynmapRenderdataGen',
                 enabled: false
             },
             'uuidConverter': {
                 title: 'UUID 转换',
-                desc: 'UUID 与 UUID Least、UUID Most 相互转换',
+                desc: 'UUID 与 UUID Least、UUID Most 相互转换。',
                 component: 'MinecraftUUIDConverter',
                 enabled: false
             },
diff --git a/src/components/tools/CalcRatio.vue b/src/components/tools/CalcRatio.vue
new file mode 100644
index 0000000..8ba2505
--- /dev/null
+++ b/src/components/tools/CalcRatio.vue
@@ -0,0 +1,135 @@
+<template>
+  <div class="tool-page">
+
+    <div class="calc-mode">
+      <div class="title">计算模式</div>
+      <div class="content">
+        <el-select v-model="mode" size="small">
+          <el-option label="1 -> 2" value="1-to-2"></el-option>
+          <el-option label="2 -> 1" value="2-to-1"></el-option>
+        </el-select>
+      </div>
+    </div>
+
+    <div class="digits">
+      <div class="title">小数位数</div>
+      <div class="content">
+        <el-input-number
+          v-model="digits"
+          controls-position="right"
+          size="small"
+          :min="0"
+          :max="10"
+          :step="1"
+          step-strictly
+          @change="update()"
+        ></el-input-number>
+      </div>
+    </div>
+
+    <div class="ratio-base">
+      <div class="title">基础比例</div>
+      <div class="content">
+        <el-input-number
+          v-model="base.a"
+          controls-position="right"
+          size="small"
+          :step="1"
+          @change="update()"
+        ></el-input-number>
+        <span class="split">:</span>
+        <el-input-number
+          v-model="base.b"
+          controls-position="right"
+          size="small"
+          :step="1"
+          @change="update()"
+        ></el-input-number>
+      </div>
+    </div>
+
+    <div class="ratio-calc">
+      <div class="title">计算比例</div>
+      <div class="content">
+        <el-input-number
+          v-model="calc.a"
+          controls-position="right"
+          size="small"
+          :step="1"
+          :disabled="mode === '2-to-1'"
+          @change="update()"
+        ></el-input-number>
+        <span class="split">:</span>
+        <el-input-number
+          v-model="calc.b"
+          controls-position="right"
+          size="small"
+          :step="1"
+          :disabled="mode === '1-to-2'"
+          @change="update()"
+        ></el-input-number>
+      </div>
+    </div>
+
+  </div>
+</template>
+
+<script>
+import { divide, multiply, round } from 'mathjs';
+
+export default {
+  name: 'CalcRatio',
+  data() {
+    return {
+      // 基础比例
+      base: {
+        a: 1,
+        b: 1,
+      },
+      // 计算比例
+      calc: {
+        a: 1,
+        b: 1,
+      },
+      // 小数位数
+      digits: 5,
+      // 模式
+      mode: '1-to-2',
+    }
+  },
+  methods: {
+
+    /**
+     * 计算
+     */
+    update() {
+      const base = this.base;
+      const calc = this.calc;
+      const digits = this.digits;
+      const mode = this.mode;
+      const ratio = base.a / base.b;
+
+      if (mode === '1-to-2') {
+        calc.b = round(divide(calc.a, ratio), digits);
+      } else if (mode === '2-to-1') {
+        calc.a = round(multiply(calc.b, ratio), digits);
+      }
+    },
+
+  },
+}
+</script>
+
+<style lang="less" scoped>
+.el-input-number,
+.el-select {
+  width: 10rem;
+}
+
+.split {
+  display: inline-block;
+  width: 2em;
+  text-align: center;
+  font-weight: bold;
+}
+</style>
diff --git a/src/components/tools/ConvertTimestamp.vue b/src/components/tools/ConvertTimestamp.vue
new file mode 100644
index 0000000..147dace
--- /dev/null
+++ b/src/components/tools/ConvertTimestamp.vue
@@ -0,0 +1,323 @@
+<template>
+  <div class="tool-page">
+
+    <div class="ctrl">
+      <div class="title">控制</div>
+      <div class="content">
+        <!-- 转换模式 -->
+        <div class="item">
+          <span class="label">转换模式</span>
+          <el-select v-model="mode" size="medium">
+            <el-option
+              v-for="item in modes"
+              :key="item.name"
+              :label="item.label"
+              :value="item.name"
+            ></el-option>
+          </el-select>
+        </div>
+        <!-- 时间戳类型 -->
+        <div class="item">
+          <span class="label">时间戳类型</span>
+          <el-select v-model="tsType" size="medium">
+            <el-option
+              v-for="item in tsTypes"
+              :key="item.name"
+              :label="item.label"
+              :value="item.name"
+            ></el-option>
+          </el-select>
+        </div>
+        <!-- 操作 -->
+        <div class="item">
+          <span class="label">操作</span>
+          <el-button
+            :type="update ? 'success' : 'warning'"
+            size="small"
+            plain
+            @click="toggleUpdate()"
+          >状态：{{ update ? '自动更新' : '暂停更新' }}</el-button>
+          <el-button
+            type="primary"
+            size="small"
+            plain
+            @click="convert()"
+          >转换</el-button>
+          <el-button
+            type="danger"
+            size="small"
+            plain
+            @click="clear()"
+          >清空</el-button>
+        </div>
+      </div>
+    </div>
+
+    <div class="current">
+      <div class="title">当前</div>
+      <div class="content">
+        <div class="item">
+          <span class="label">时间</span>
+          <el-input
+            v-model="current.t"
+            size="medium"
+            readonly
+          ></el-input>
+        </div>
+        <div class="item">
+          <span class="label">时间戳</span>
+          <el-input
+            v-model="current.ts"
+            size="medium"
+            readonly
+          ></el-input>
+        </div>
+      </div>
+    </div>
+
+    <div class="inputs">
+      <div class="title">输入</div>
+      <div class="content">
+        <div class="notice">
+          <p>注意：</p>
+          <p>在“本地时间 -> 时间戳”的模式中，若省略“时间”，将会加上本地时区与零时区的时差后计算；</p>
+          <p>例如北京时间（UTC+8）按 08:00 计算，东京时间（UTC+9）按 09:00 计算。</p>
+        </div>
+        <el-input
+          v-model="textInputs"
+          :placeholder="placeholder"
+          size="medium"
+        ></el-input>
+      </div>
+    </div>
+
+    <div class="outputs">
+      <div class="title">结果</div>
+      <div class="content">
+        <el-input
+          v-model="textOutputs"
+          size="medium"
+        ></el-input>
+      </div>
+    </div>
+
+  </div>
+</template>
+
+<script>
+export default {
+  name: 'ConvertTimestamp',
+  data() {
+    return {
+      // 转换模式
+      mode: 't-to-ts',
+      modes: [
+        { name: 't-to-ts', label: '本地时间 -> 时间戳' },
+        { name: 'ts-to-t', label: '时间戳 -> 本地时间' },
+      ],
+      // 定时器
+      timer: null,
+      // 是否更新当前时间
+      update: true,
+      // 时间戳类型
+      tsType: 'ms',
+      tsTypes: [
+        { name: 'ms', label: '毫秒' },
+        { name: 's', label: '秒' },
+      ],
+      // 当前时间
+      current: {
+        t: '',
+        ts: '',
+      },
+      // 输入
+      textInputs: '',
+      // 输出
+      textOutputs: '',
+    }
+  },
+  computed: {
+
+    // 输入占位文本
+    placeholder() {
+      const mode = this.mode;
+      const type = this.tsType;
+
+      if (mode === 't-to-ts') {
+        return '参考格式：年-月-日 时:分:秒';
+      } else if (mode === 'ts-to-t') {
+        if (type === 's') {
+          return '参考范例：1577808000';
+        } else if (type === 'ms') {
+          return '参考范例：1577808000000';
+        }
+      }
+
+      return '';
+    },
+
+  },
+  created () {
+    this.init();
+  },
+  beforeDestroy () {
+    clearInterval(this.timer);
+  },
+  methods: {
+
+    /**
+     * 初始化
+     */
+    init() {
+      this.timer = setInterval(() => {
+        if (this.update) {
+          this.current.t = this.tsToTime();
+          this.current.ts = this.timeToTs();
+        }
+      }, 1000);
+    },
+
+    /**
+     * 清空
+     */
+    clear() {
+      this.textInputs = '';
+      this.textOutputs = '';
+    },
+
+    /**
+     * 转换
+     */
+    convert() {
+      const mode = this.mode;
+
+      if (mode === 't-to-ts') {
+        this.textOutputs = this.timeToTs(this.textInputs);
+      } else if (mode === 'ts-to-t') {
+        this.textOutputs = this.tsToTime(this.textInputs);
+      }
+    },
+
+    /**
+     * 时间 -> 时间戳
+     * 
+     * @param {string} [timeStr] 时间字符串（年-月-日 时:分:秒）
+     * @returns {string} 转换结果
+     */
+    timeToTs(timeStr) {
+      const date = (timeStr ? new Date(timeStr) : new Date());
+
+      if (date.toString() === 'Invalid Date') {
+        return '格式错误';
+      }
+
+      const result = date.getTime();
+
+      if (this.tsType === 'ms') {
+        // 毫秒
+        return result;
+      } else {
+        // 秒
+        return (result / 1000).toFixed(0);
+      }
+    },
+
+    /**
+     * 时间戳 -> 时间
+     * 
+     * @param {(number|string)} [ts] 时间戳
+     * @returns {string} 转换结果（年-月-日 时:分:秒）
+     */
+    tsToTime(ts = null) {
+      if (ts === '') {
+        ts = null;
+      }
+
+      // 是否有参数
+      const tsParam = (ts !== null);
+
+      // 时间戳是秒
+      if (tsParam && this.tsType === 's') {
+        ts += '000';
+      }
+
+      // 转为数值
+      const timestamp = parseInt(ts);
+
+      if (tsParam && isNaN(timestamp)) {
+        return '格式错误';
+      }
+
+      const date = (tsParam ? new Date(timestamp) : new Date());
+      const t = {
+        y: date.getFullYear(),
+        m: date.getMonth() + 1,
+        d: date.getDate(),
+        h: date.getHours(),
+        i: date.getMinutes(),
+        s: date.getSeconds(),
+      };
+
+      // 补零
+      for (let key in t) {
+        (t[key] < 10) && (t[key] = ('0' + t[key]));
+      }
+
+      return `${t.y}-${t.m}-${t.d} ${t.h}:${t.i}:${t.s}`;
+    },
+
+    /**
+     * 切换自动更新
+     */
+    toggleUpdate() {
+      this.update = !this.update;
+    },
+
+  },
+}
+</script>
+
+<style lang="less" scoped>
+.ctrl, .current {
+  .content {
+    display: flex;
+    flex-wrap: wrap;
+  }
+
+  .item {
+    margin: 0.5rem 0.5rem;
+  }
+
+  .label {
+    display: inline-block;
+    margin-right: 0.5em;
+  }
+}
+
+.ctrl {
+  .el-select {
+    width: 12em;
+  }
+}
+
+.current {
+  .el-input {
+    width: 20em;
+  }
+
+  .label {
+    width: 3.5em;
+    text-align: right;
+  }
+}
+
+.inputs, .outputs {
+  .el-input {
+    max-width: 25em;
+  }
+}
+
+.notice {
+  margin-bottom: 1em;
+}
+</style>
diff --git a/src/components/tools/GenLinks.vue b/src/components/tools/GenLinks.vue
new file mode 100644
index 0000000..0fa655b
--- /dev/null
+++ b/src/components/tools/GenLinks.vue
@@ -0,0 +1,449 @@
+<template>
+  <div class="tool-page">
+
+    <div class="link-base">
+      <div class="title">链接模板</div>
+      <div class="content">
+        <el-input
+          v-model="linkBase"
+          size="medium"
+          placeholder="使用 {n} 表示变量"
+          clearable
+        ></el-input>
+      </div>
+    </div>
+
+    <div class="config">
+      <div class="title">参数配置</div>
+      <div class="content">
+        <el-radio-group v-model="mode">
+
+          <!-- 等差数列 -->
+          <div class="mode-item mode-as">
+
+            <div class="config-row">
+              <el-radio label="as">等差数列</el-radio>
+            </div>
+
+            <div class="config-row">
+              <div class="config-item">
+                <span class="label">首项</span>
+                <el-input-number
+                  v-model="modes.as.first"
+                  controls-position="right"
+                  size="medium"
+                  :step="1"
+                  step-strictly
+                ></el-input-number>
+              </div>
+              <div class="config-item">
+                <span class="label">公差</span>
+                <el-input-number
+                  v-model="modes.as.diff"
+                  controls-position="right"
+                  size="medium"
+                  :step="1"
+                  step-strictly
+                ></el-input-number>
+              </div>
+              <div class="config-item">
+                <span class="label">项数</span>
+                <el-input-number
+                  v-model="modes.as.count"
+                  controls-position="right"
+                  size="medium"
+                  :step="1"
+                  step-strictly
+                ></el-input-number>
+              </div>
+            </div>
+
+            <div class="config-row">
+              <div class="config-item">
+                <span class="label">格式</span>
+                <el-checkbox
+                  v-model="modes.as.zero"
+                >补零</el-checkbox>
+                <el-checkbox
+                  v-model="modes.as.reverse"
+                >倒序</el-checkbox>
+              </div>
+            </div>
+
+          </div>
+          <!-- 等差数列 -->
+
+          <!-- 等比数列 -->
+          <div class="mode-item mode-ps">
+
+            <div class="config-row">
+              <el-radio label="ps">等比数列</el-radio>
+            </div>
+
+            <div class="config-row">
+              <div class="config-item">
+                <span class="label">首项</span>
+                <el-input-number
+                  v-model="modes.ps.first"
+                  controls-position="right"
+                  size="medium"
+                  :step="1"
+                  step-strictly
+                ></el-input-number>
+              </div>
+              <div class="config-item">
+                <span class="label">公比</span>
+                <el-input-number
+                  v-model="modes.ps.diff"
+                  controls-position="right"
+                  size="medium"
+                  :step="1"
+                  step-strictly
+                ></el-input-number>
+              </div>
+              <div class="config-item">
+                <span class="label">项数</span>
+                <el-input-number
+                  v-model="modes.ps.count"
+                  controls-position="right"
+                  size="medium"
+                  :step="1"
+                  step-strictly
+                ></el-input-number>
+              </div>
+            </div>
+
+            <div class="config-row">
+              <div class="config-item">
+                <span class="label">格式</span>
+                <el-checkbox
+                  v-model="modes.ps.zero"
+                >补零</el-checkbox>
+                <el-checkbox
+                  v-model="modes.ps.reverse"
+                >倒序</el-checkbox>
+              </div>
+            </div>
+
+          </div>
+          <!-- 等比数列 -->
+
+          <!-- 字母变化 -->
+          <div class="mode-item mode-lc">
+
+            <div class="config-row">
+              <el-radio label="lc">字母变化</el-radio>
+            </div>
+
+            <div class="config-row">
+              <span class="label">从</span>
+              <el-input
+                v-model="modes.lc.start"
+                size="medium"
+                :maxlength="1"
+              ></el-input>
+              <span class="label">到</span>
+              <el-input
+                v-model="modes.lc.end"
+                size="medium"
+                :maxlength="1"
+              ></el-input>
+              <el-checkbox
+                v-model="modes.lc.reverse"
+              >倒序</el-checkbox>
+            </div>
+            
+          </div>
+          <!-- 字母变化 -->
+
+        </el-radio-group>
+      </div>
+    </div>
+
+    <div class="action">
+      <div class="title">操作</div>
+      <div class="content">
+        <el-button
+          type="primary"
+          size="small"
+          plain
+          @click="generate()"
+        >生成链接</el-button>
+        <el-button
+          type="danger"
+          size="small"
+          plain
+          @click="clear()"
+        >清空结果</el-button>
+      </div>
+    </div>
+
+    <div class="link-result">
+      <div class="title">生成结果</div>
+      <div class="content">
+        <el-input
+          v-model="linkResult"
+          type="textarea"
+          :rows="10"
+        ></el-input>
+      </div>
+    </div>
+
+  </div>
+</template>
+
+<script>
+export default {
+  name: 'GenLinks',
+  data() {
+    return {
+      // 链接模板
+      linkBase: '',
+      // 生成结果
+      linkResult: '',
+      // 正则，匹配链接变量
+      linkReg: /\{n\}/g,
+      // 当前模式
+      mode: 'as',
+      modes: {
+        // 等差数列（Arithmetic Sequence）
+        as: {
+          first: 0,
+          diff: 1,
+          count: 10,
+          zero: false,
+          reverse: false,
+        },
+        // 等比数列（Proportional Sequence）
+        ps: {
+          first: 1,
+          diff: 2,
+          count: 10,
+          zero: false,
+          reverse: false,
+        },
+        // 字母变化（Letter Change）
+        lc: {
+          start: 'a',
+          end: 'z',
+          reverse: false,
+        },
+      },
+    }
+  },
+  methods: {
+
+    /**
+     * 清空
+     */
+    clear() {
+      this.linkResult = '';
+    },
+
+    /**
+     * 生成
+     */
+    generate() {
+      const mode = this.mode;
+
+      switch (mode) {
+        case 'as':
+          this.linkResult = this.generateSeq('as');
+          break;
+        case 'ps':
+          this.linkResult = this.generateSeq('ps');
+          break;
+        case 'lc':
+          this.linkResult = this.generateLetter();
+          break;
+        default:
+          break;
+      }
+    },
+
+    /**
+     * 生成数列
+     * 
+     * @param {string} typs 类型（as - 等差数列，ps - 等比数列）
+     * @returns {string} 生成结果
+     */
+    generateSeq(type) {
+      const linkBase = this.linkBase;
+      const linkReg = this.linkReg;
+
+      if (!linkBase) {
+        return '';
+      }
+
+      const data = this.modes[type];
+
+      if (!data) {
+        return '';
+      }
+
+      const nFirst = data.first
+      const nCount = data.count;
+      const nDiff = data.diff;
+
+      const nResult = {
+        digits: 0,   // 最大位数
+        numbers: [], // 生成的数值
+      };
+
+      const links = [];
+
+      // 等差数列公式
+      const expAS = (i) => {
+        return (nFirst + (i - 1) * nDiff);
+      };
+      // 等比数列公式
+      const expPS = (i) => {
+        return (nFirst * Math.pow(nDiff, (i - 1)));
+      };
+      // 实际使用的公式
+      const exp = (type === 'as' ? expAS : expPS);
+
+      // 生成数值
+      for (let i = 1; i <= nCount; i++) {
+        // 等差数列 / 等比数列
+        const n = exp(i);
+        const digits = Math.abs(n).toString().length;
+
+        (digits > nResult.digits) && (nResult.digits = digits);
+        nResult.numbers.push(n);
+      }
+
+      // 补零
+      if (data.zero) {
+        const digits = nResult.digits;
+        const base = Math.pow(10, digits);
+        const numbers = nResult.numbers;
+
+        for (let i = 0; i < numbers.length; i++) {
+          const n = numbers[i];
+
+          if (n >= 0) {
+            numbers[i] = (n / base).toFixed(digits).substr(2);
+          } else {
+            numbers[i] = '-' + (n / base).toFixed(digits).substr(3);
+          }
+        }
+      }
+
+      // 倒序
+      if (data.reverse) {
+        nResult.numbers.reverse();
+      }
+
+      // 生成链接
+      nResult.numbers.forEach((n) => {
+        links.push(linkBase.replace(linkReg, n));
+      });
+
+      return links.join('\n');
+    },
+
+    /**
+     * 生成字母
+     */
+    generateLetter() {
+      const linkBase = this.linkBase;
+      const linkReg = this.linkReg;
+
+      if (!linkBase) {
+        return '';
+      }
+
+      const data = this.modes.lc;
+
+      // 编码数值
+      const cStart = data.start.charCodeAt(0);
+      const cEnd = data.end.charCodeAt(0);
+
+      const chars = [];
+      const links = [];
+
+      // 生成字母
+      if (cStart >= 65 && cStart <= 122 && cEnd >= 65 && cEnd <= 122) {
+        if (cStart < cEnd) {
+          for (let i = cStart; i <= cEnd; i++) {
+            // 跳过符号 [ \ ] ^ _ `
+            if (i >= 91 && i <= 96) {
+              continue;
+            }
+            chars.push(String.fromCharCode(i));
+          }
+        } else if (cStart > cEnd) {
+          return '字母先后顺序有误。注意：大写字母需要在前。';
+        } else if (cStart === cEnd) {
+          return '仅有 1 条链接，无需生成。';
+        } else {
+          return '未知错误。';
+        }
+      } else {
+        return '输入有误，请检查。';
+      }
+
+      // 倒序
+      if (data.reverse) {
+        chars.reverse();
+      }
+
+      // 生成链接
+      chars.forEach((c) => {
+        links.push(linkBase.replace(linkReg, c));
+      });
+
+      return links.join('\n');
+    },
+
+  },
+}
+</script>
+
+<style lang="less" scoped>
+.config {
+  .el-input-number {
+    width: 8rem;
+  }
+
+  .mode-item {
+    padding: 0.5rem 0;
+
+    &:not(:last-child) {
+      border-bottom: 0.0625rem solid #EEE;
+    }
+  }
+
+  .config-row {
+    display: flex;
+    align-items: center;
+    flex-wrap: wrap;
+    padding: 0.25rem 0;
+  }
+
+  .config-item {
+    margin: 0.25rem 0;
+  }
+
+  .label {
+    display: inline-block;
+    margin: 0 1em;
+    font-size: 0.8rem;
+  }
+}
+
+.mode-lc {
+  /deep/ .el-checkbox {
+    margin: 0 1em;
+  }
+
+  /deep/ .el-input {
+    width: 3.5em;
+  }
+
+  /deep/ .el-input__inner {
+    text-align: center;
+  }
+}
+</style>