diff --git a/M02_MasterTemplete/DataFlow/M02_DF_FuncPanel.css b/M02_MasterTemplete/DataFlow/M02_DF_FuncPanel.css
index 80fb0f252..7497c4a10 100644
--- a/M02_MasterTemplete/DataFlow/M02_DF_FuncPanel.css
+++ b/M02_MasterTemplete/DataFlow/M02_DF_FuncPanel.css
@@ -50,13 +50,6 @@
   font-size: var(--text-body-sm);
 }
 
-.m02-dfpanel .ui-btn,
-.m02-dfpanel .ui-input,
-.m02-dfpanel .ui-select {
-  min-height: 44px;
-  font-size: var(--text-body);
-}
-
 .m02-dfpanel-form {
   align-items: flex-end;
   padding: var(--spacing-8) var(--spacing-12);
@@ -92,8 +85,7 @@
   display: inline-flex;
   align-items: center;
   gap: var(--spacing-4);
-  min-height: 44px;
-  padding: 0 var(--spacing-12);
+  padding: var(--spacing-4) var(--spacing-12);
   border: 2px solid;
   border-radius: var(--radius-pills);
   background: var(--color-surface);
diff --git a/M02_MasterTemplete/DataFlow/M02_DF_FuncPanel.ts b/M02_MasterTemplete/DataFlow/M02_DF_FuncPanel.ts
index a38ce4aba..c0c3de97c 100644
--- a/M02_MasterTemplete/DataFlow/M02_DF_FuncPanel.ts
+++ b/M02_MasterTemplete/DataFlow/M02_DF_FuncPanel.ts
@@ -15,6 +15,9 @@ import type {
   Workbook,
 } from "../../A00_Common/spreadsheet/spreadsheet";
 import type { CfBox, CfFunc, CfLogic, CfVariable } from "./M02_DF_Model";
+import { parseRound, wrapRound, type RoundSpec } from "./M02_DF_Round";
+import { createRoundRow } from "./M02_DF_RoundRow";
+import { createUnitPick, suggestPlaces } from "./M02_DF_UnitPick";
 import "./M02_DF_FuncPanel.css";
 
 const TEXT = {
@@ -126,6 +129,8 @@ interface State {
   json: string;
   cell: string;
   form: VarForm | null;
+  /** 단위 표준이 제안한 출력 소수자리 */
+  suggest: number | null;
   parts: {
     head: HTMLElement;
     got: HTMLElement;
@@ -317,20 +322,19 @@ function applyMarks(st: State): void {
 
 function drawHead(st: State): void {
   const box = boxOf(st);
-  const unit = el("input", {
-    className: "ui-input m02-dfpanel-unit",
-    attrs: { type: "text", "aria-label": tf("Unit") },
-  });
-  unit.value = box?.unit ?? "-";
-  if (st.readOnly) unit.readOnly = true;
-  unit.addEventListener("change", () => {
-    const v = unit.value.trim() || "-";
-    unit.value = v;
-    patchBox(st, (b) => ({
-      ...b,
-      unit: v,
-      func: b.func ? { ...b.func, output: { ...b.func.output, unit: v } } : b.func,
-    }));
+  const unit = createUnitPick({
+    value: box?.unit ?? "-",
+    readOnly: st.readOnly,
+    extra: st.lg.resultUnit ? [st.lg.resultUnit] : [],
+    ariaLabel: tf("Unit"),
+    onPick: (v) => {
+      patchBox(st, (x) => ({
+        ...x,
+        unit: v,
+        func: x.func ? { ...x.func, output: { ...x.func.output, unit: v } } : x.func,
+      }));
+      void suggestPlaces(v).then((n) => ((st.suggest = n), drawBar(st)));
+    },
   });
   st.parts.head.replaceChildren(
     el("strong", { className: "m02-dfpanel-title", text: box?.name ?? "" }),
@@ -372,8 +376,21 @@ function formField(
   cls = "",
 ): HTMLElement {
   const form = st.form!;
+  if (key === "unit") {
+    return el("label", {
+      className: "m02-dfpanel-fieldbox",
+      children: [
+        el("span", { className: "m02-dfpanel-note", text: tf(label) }),
+        createUnitPick({
+          value: form.unit || "-",
+          ariaLabel: tf(label),
+          onPick: (u) => ((form.unit = u), drawVars(st)),
+        }),
+      ],
+    });
+  }
   const input = el("input", {
-    className: `ui-input m02-dfpanel-field ${cls}`,
+    className: `ui-input ui-input--sm m02-dfpanel-field ${cls}`,
     attrs: { type: "text", "aria-label": tf(label) },
   });
   input.value = form[key];
@@ -443,7 +460,7 @@ function drawVars(st: State): void {
       );
     } else {
       const type = el("select", {
-        className: "ui-select m02-dfpanel-field",
+        className: "ui-select ui-select--sm m02-dfpanel-field",
         attrs: { "aria-label": tf("VarType") },
       });
       for (const [v, k] of [
@@ -520,6 +537,7 @@ function drawBar(st: State): void {
         el("span", { className: "m02-dfpanel-note", text: tf("OutOnly") }),
       ],
     }),
+    ...[roundRow(st)].filter((x): x is HTMLElement => !!x),
     el("div", {
       className: "m02-dfpanel-row",
       children: [
@@ -538,6 +556,34 @@ function drawBar(st: State): void {
   );
 }
 
+/** 출력 칸 수식에 끝수 씌움(칸 값만 있으면 그 값을 감쌈) */
+function writeRound(st: State, spec: RoundSpec | null): void {
+  const f = funcOf(st);
+  const cell = f?.sheet.칸[f.output.cell];
+  if (!f || !cell) return;
+  const text = cell.식 ?? String(cell.값 ?? "");
+  const inner = parseRound(text)?.inner ?? text;
+  patchFunc(st, (x) => {
+    const sheet = structuredClone(x.sheet);
+    sheet.칸[x.output.cell] = { 식: wrapRound(inner, spec) };
+    return { ...x, sheet };
+  });
+}
+
+function roundRow(st: State): HTMLElement | null {
+  const f = funcOf(st);
+  const cell = f?.sheet.칸[f.output.cell];
+  const formula = cell
+    ? (cell.식 ?? (cell.값 === undefined ? undefined : String(cell.값)))
+    : undefined;
+  return createRoundRow({
+    formula,
+    suggest: st.suggest,
+    readOnly: st.readOnly,
+    onApply: (spec) => writeRound(st, spec),
+  });
+}
+
 /** 출력 칸 하나 정하기 — 다시 고르면 바뀜 */
 function setOutput(st: State, cell: string): void {
   const f = funcOf(st);
@@ -681,6 +727,7 @@ export function renderFuncPanel(
     json: "",
     cell: "A1",
     form: null,
+    suggest: null,
     parts,
     observer: null,
     redraw: () => {
diff --git a/M02_MasterTemplete/DataFlow/M02_DF_Round.ts b/M02_MasterTemplete/DataFlow/M02_DF_Round.ts
new file mode 100644
index 000000000..c5165238b
--- /dev/null
+++ b/M02_MasterTemplete/DataFlow/M02_DF_Round.ts
@@ -0,0 +1,33 @@
+/* =============================================================================
+ * M02_DF_Round.ts
+ * 끝수 — 출력 칸 수식을 ROUND 계열로 감쌈 · 감싼 것을 읽음 · DOM 없음
+ * 소수자리 제안은 단위 표준(M02_DF_UnitPick.suggestPlaces) · 주 ① 반올림 · ② 항목 값 우선
+ * ========================================================================== */
+
+export type RoundMode = "반올림" | "올림" | "버림";
+
+export const ROUND_FN: Record<RoundMode, string> = {
+  반올림: "ROUND",
+  올림: "ROUNDUP",
+  버림: "ROUNDDOWN",
+};
+
+export interface RoundSpec {
+  places: number;
+  mode: RoundMode;
+}
+
+const WRAPPED = /^(ROUND|ROUNDUP|ROUNDDOWN)\((.*),\s*(-?\d+)\s*\)$/s;
+
+/** 칸 수식(앞 = 뺀 글) → 끝수 · 안 감싸였으면 null */
+export function parseRound(formula: string): { spec: RoundSpec; inner: string } | null {
+  const m = WRAPPED.exec(formula.trim());
+  if (!m) return null;
+  const mode = (Object.keys(ROUND_FN) as RoundMode[]).find((k) => ROUND_FN[k] === m[1]);
+  return mode ? { spec: { places: Number(m[3]), mode }, inner: m[2] } : null;
+}
+
+/** 안쪽 글에 끝수를 씌움 — spec 이 null 이면 벗김 */
+export function wrapRound(inner: string, spec: RoundSpec | null): string {
+  return spec ? `${ROUND_FN[spec.mode]}(${inner}, ${spec.places})` : inner;
+}
diff --git a/M02_MasterTemplete/DataFlow/M02_DF_RoundRow.ts b/M02_MasterTemplete/DataFlow/M02_DF_RoundRow.ts
new file mode 100644
index 000000000..82042b2e9
--- /dev/null
+++ b/M02_MasterTemplete/DataFlow/M02_DF_RoundRow.ts
@@ -0,0 +1,77 @@
+/* =============================================================================
+ * M02_DF_RoundRow.ts
+ * 끝수 고르기 줄 — 소수 몇 자리 · 반올림/올림/버림 · 단위 표준에서 자리 제안(적용 단추)
+ * 칸 · 단추는 공용 작은 크기 · 글 [한, 영] 짝은 아래 TEXT
+ * ========================================================================== */
+
+import { currentLanguageIndex } from "@ui/ui_template_locale";
+import { createButton, el } from "@ui/ui_template_elements";
+import { parseRound, ROUND_FN, type RoundMode, type RoundSpec } from "./M02_DF_Round";
+
+const TEXT = {
+  Label: ["끝수", "Rounding"],
+  None: ["안 씀", "none"],
+  Places: ["소수 {n}자리", "{n} decimals"],
+  Suggest: ["표준 제안: 소수 {n}자리", "Standard suggests {n} decimals"],
+  Apply: ["적용", "Apply"],
+  Places_aria: ["소수자리", "Decimal places"],
+  Mode_aria: ["방법", "Method"],
+} as const;
+
+const tr = (key: keyof typeof TEXT, n?: number): string =>
+  TEXT[key][currentLanguageIndex === 1 ? 1 : 0].replace("{n}", String(n ?? ""));
+
+export interface RoundRowOptions {
+  /** 출력 칸 수식(앞 = 뺀 글) — 없으면 줄을 안 그림 */
+  formula: string | undefined;
+  /** 단위 표준이 제안한 소수자리 */
+  suggest: number | null;
+  readOnly?: boolean;
+  /** null = 끝수 벗김 */
+  onApply(spec: RoundSpec | null): void;
+}
+
+export function createRoundRow(opts: RoundRowOptions): HTMLElement | null {
+  if (opts.formula === undefined) return null;
+  const now = parseRound(opts.formula)?.spec ?? null;
+  const places = el("select", {
+    className: "ui-select ui-select--sm",
+    attrs: { "aria-label": tr("Places_aria") },
+  });
+  places.append(el("option", { attrs: { value: "" }, text: tr("None") }));
+  for (let n = 0; n <= 6; n++) {
+    places.append(el("option", { attrs: { value: String(n) }, text: tr("Places", n) }));
+  }
+  places.value = now ? String(now.places) : "";
+  const mode = el("select", {
+    className: "ui-select ui-select--sm",
+    attrs: { "aria-label": tr("Mode_aria") },
+  });
+  for (const m of Object.keys(ROUND_FN) as RoundMode[]) {
+    mode.append(el("option", { attrs: { value: m }, text: m }));
+  }
+  mode.value = now?.mode ?? "반올림";
+  if (opts.readOnly) places.disabled = mode.disabled = true;
+  const emit = (): void =>
+    opts.onApply(
+      places.value === "" ? null : { places: Number(places.value), mode: mode.value as RoundMode },
+    );
+  places.addEventListener("change", emit);
+  mode.addEventListener("change", () => places.value !== "" && emit());
+  const row = el("div", {
+    className: "m02-dfpanel-row",
+    children: [el("span", { className: "m02-dfpanel-label", text: tr("Label") }), places, mode],
+  });
+  if (opts.suggest !== null && !now && !opts.readOnly) {
+    row.append(
+      el("span", { className: "m02-dfpanel-note", text: tr("Suggest", opts.suggest) }),
+      createButton({
+        label: tr("Apply"),
+        variant: "ghost",
+        size: "sm",
+        onClick: () => opts.onApply({ places: opts.suggest!, mode: "반올림" }),
+      }),
+    );
+  }
+  return row;
+}
diff --git a/M02_MasterTemplete/DataFlow/M02_DF_UnitPick.css b/M02_MasterTemplete/DataFlow/M02_DF_UnitPick.css
new file mode 100644
index 000000000..cf2f43126
--- /dev/null
+++ b/M02_MasterTemplete/DataFlow/M02_DF_UnitPick.css
@@ -0,0 +1,56 @@
+.m02-df-unitpick {
+  position: relative;
+  display: inline-block;
+}
+
+.m02-df-unitpick__panel {
+  position: absolute;
+  top: 100%;
+  left: 0;
+  z-index: 50;
+  display: flex;
+  flex-direction: column;
+  gap: var(--spacing-4);
+  min-width: 14em;
+  max-height: 20em;
+  padding: var(--spacing-8);
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-cards);
+  background: var(--color-surface);
+  box-shadow: var(--shadow-lg);
+}
+
+.m02-df-unitpick__list {
+  margin: 0;
+  padding: 0;
+  list-style: none;
+  overflow-y: auto;
+}
+
+.m02-df-unitpick__item {
+  display: block;
+  width: 100%;
+  padding: var(--spacing-4) var(--spacing-8);
+  border: 0;
+  border-radius: var(--radius-sm);
+  background: transparent;
+  color: inherit;
+  font: inherit;
+  text-align: left;
+  cursor: pointer;
+}
+
+.m02-df-unitpick__item.is-on,
+.m02-df-unitpick__item:hover {
+  background: var(--color-surface-raised);
+}
+
+.m02-df-unitpick__item.is-now {
+  font-weight: var(--font-weight-bold);
+}
+
+.m02-df-unitpick__empty {
+  padding: var(--spacing-8);
+  color: var(--color-text-muted);
+  font-size: var(--text-body-sm);
+}
diff --git a/M02_MasterTemplete/DataFlow/M02_DF_UnitPick.ts b/M02_MasterTemplete/DataFlow/M02_DF_UnitPick.ts
new file mode 100644
index 000000000..aabe898b4
--- /dev/null
+++ b/M02_MasterTemplete/DataFlow/M02_DF_UnitPick.ts
@@ -0,0 +1,181 @@
+/* =============================================================================
+ * M02_DF_UnitPick.ts
+ * 단가산출 흐름도 공용 단위 고르기 — 치면 걸러진 목록 · 고르기만(손글 안 받음) · 「-」 = 없음
+ * 목록 = 단위 표준(산림품셈 1-2-2) 단위 + 부른 쪽이 주는 마스터 결과단위 등 + 원
+ * 표준 표 읽는 길은 `setUnitSource` 로 바꿔 끼움(기본 = 처음 값 `_standard/단위표준.json`) — 다른 판도 이것을 씀
+ * 글 [한, 영] 짝은 아래 TEXT
+ * ========================================================================== */
+
+import { currentLanguageIndex } from "@ui/ui_template_locale";
+import { createButton, el } from "@ui/ui_template_elements";
+import "./M02_DF_UnitPick.css";
+
+const TEXT = {
+  None: ["없음", "none"],
+  Filter: ["단위를 쳐서 찾음", "Type to filter units"],
+  Empty: ["맞는 단위가 없음 — 목록에서만 고름", "No match — pick from the list only"],
+  Pick: ["단위 고르기", "Pick a unit"],
+} as const;
+
+const tu = (key: keyof typeof TEXT): string => TEXT[key][currentLanguageIndex === 1 ? 1 : 0];
+
+/** 「없음」 을 뜻하는 단위 글 */
+export const NO_UNIT = "-";
+
+/** 표준 표에서 읽은 것 — 단위 목록 · 단위마다 소수자리 제안(단위수량 쪽에서 가장 많이 쓴 자리) */
+export interface UnitStandard {
+  units: string[];
+  places: Record<string, number>;
+}
+
+type UnitSource = () => Promise<UnitStandard>;
+
+interface StandardRow {
+  "규격 단위"?: string | null;
+  "단위수량 단위"?: string | null;
+  "단위수량 소수자리"?: number | null;
+}
+
+/** 처음 값 — 번들에 든 표준 표(단위표준.json) */
+const bundled: UnitSource = async () => {
+  const table = (await import("./_standard/단위표준.json")).default as { 줄: StandardRow[] };
+  const units = table.줄
+    .flatMap((r) => [r["규격 단위"], r["단위수량 단위"]])
+    .filter((u): u is string => !!u);
+  const count: Record<string, Record<number, number>> = {};
+  for (const r of table.줄) {
+    const u = r["단위수량 단위"];
+    const p = r["단위수량 소수자리"];
+    if (!u || u === "없음" || typeof p !== "number") continue;
+    count[u] = { ...count[u], [p]: (count[u]?.[p] ?? 0) + 1 };
+  }
+  const places = Object.fromEntries(
+    Object.entries(count).map(([u, c]) => [
+      u,
+      Number(Object.entries(c).sort((a, b) => b[1] - a[1])[0][0]),
+    ]),
+  );
+  return { units, places };
+};
+
+let source: UnitSource = bundled;
+let cache: Promise<UnitStandard> | null = null;
+
+/** 표준 표 읽는 길 바꾸기(서버에서 고친 표를 읽을 때) — 목록을 다시 받음 */
+export function setUnitSource(next: UnitSource): void {
+  source = next;
+  cache = null;
+}
+
+/** 표준 단위 + 원 — 같은 글은 한 번 · 「없음」 은 뺌 */
+export function loadStandard(): Promise<UnitStandard> {
+  cache ??= source().then((std) => {
+    const set = new Set([...std.units, "원"]);
+    set.delete("없음");
+    set.delete(NO_UNIT);
+    return { units: [...set], places: std.places };
+  });
+  return cache;
+}
+
+/** 단위를 고르면 표준 표에서 소수자리 제안 — 없으면 null */
+export async function suggestPlaces(unit: string): Promise<number | null> {
+  return (await loadStandard()).places[unit] ?? null;
+}
+
+export interface UnitPickOptions {
+  /** 지금 단위 — 「-」 = 없음 */
+  value: string;
+  onPick(unit: string): void;
+  /** 더 보일 단위(마스터 결과단위 등) */
+  extra?: string[];
+  readOnly?: boolean;
+  ariaLabel?: string;
+}
+
+/** 단위 고르기 — 단추를 누르면 걸러지는 목록 · 목록에서 고르기만 됨 */
+export function createUnitPick(opts: UnitPickOptions): HTMLElement {
+  const label = (u: string): string => (u === NO_UNIT ? `${NO_UNIT} (${tu("None")})` : u);
+  const root = el("span", { className: "m02-df-unitpick" });
+  const open = createButton({
+    label: opts.value || NO_UNIT,
+    variant: "ghost",
+    size: "sm",
+    disabled: opts.readOnly,
+    onClick: () => toggle(),
+  });
+  open.setAttribute("aria-label", `${opts.ariaLabel ?? tu("Pick")}: ${opts.value || NO_UNIT}`);
+  open.setAttribute("aria-haspopup", "listbox");
+  root.append(open);
+  if (opts.readOnly) return root;
+
+  const input = el("input", {
+    className: "ui-input ui-input--sm m02-df-unitpick__filter",
+    attrs: { type: "text", placeholder: tu("Filter"), "aria-label": tu("Filter") },
+  });
+  const list = el("ul", { className: "m02-df-unitpick__list", attrs: { role: "listbox" } });
+  const panel = el("div", { className: "m02-df-unitpick__panel", children: [input, list] });
+  panel.hidden = true;
+  root.append(panel);
+
+  let all: string[] = [];
+  let shown: string[] = [];
+  let at = 0;
+  const pick = (u: string): void => {
+    close();
+    if (u !== (opts.value || NO_UNIT)) opts.onPick(u);
+  };
+  const draw = (): void => {
+    const q = input.value.trim().toLowerCase();
+    shown = all.filter((u) => u === NO_UNIT || !q || u.toLowerCase().includes(q));
+    if (q && !NO_UNIT.includes(q)) shown = shown.filter((u) => u !== NO_UNIT);
+    at = Math.min(at, Math.max(0, shown.length - 1));
+    list.replaceChildren(
+      ...(shown.length
+        ? shown.map((u, i) => {
+            const b = el("button", {
+              className: `m02-df-unitpick__item${i === at ? " is-on" : ""}${u === (opts.value || NO_UNIT) ? " is-now" : ""}`,
+              text: label(u),
+              attrs: { type: "button", role: "option" },
+            });
+            b.addEventListener("click", () => pick(u));
+            return el("li", { children: [b] });
+          })
+        : [el("li", { className: "m02-df-unitpick__empty", text: tu("Empty") })]),
+    );
+  };
+  const close = (): void => {
+    panel.hidden = true;
+    document.removeEventListener("pointerdown", outside, true);
+  };
+  const outside = (e: Event): void => {
+    if (!root.contains(e.target as Node)) close();
+  };
+  function toggle(): void {
+    if (!panel.hidden) return close();
+    panel.hidden = false;
+    document.addEventListener("pointerdown", outside, true);
+    input.value = "";
+    void loadStandard().then(({ units }) => {
+      const mine = [...(opts.extra ?? []), ...units];
+      all = [NO_UNIT, ...new Set(mine.filter((u) => u && u !== NO_UNIT))];
+      at = 0;
+      draw();
+      input.focus();
+    });
+  }
+  input.addEventListener("input", () => ((at = 0), draw()));
+  input.addEventListener("keydown", (e) => {
+    if (e.key === "Escape") return (e.stopPropagation(), close(), open.focus());
+    if (e.key === "ArrowDown" || e.key === "ArrowUp") {
+      e.preventDefault();
+      at = Math.max(0, Math.min(shown.length - 1, at + (e.key === "ArrowDown" ? 1 : -1)));
+      return draw();
+    }
+    if (e.key === "Enter" && shown[at] !== undefined) {
+      e.preventDefault();
+      pick(shown[at]);
+    }
+  });
+  return root;
+}