diff --git a/icu4c/source/i18n/unicode/numberformatter.h b/icu4c/source/i18n/unicode/numberformatter.h
index 615cf49f7b7..ec97bcc7f98 100644
--- a/icu4c/source/i18n/unicode/numberformatter.h
+++ b/icu4c/source/i18n/unicode/numberformatter.h
@@ -1507,10 +1507,15 @@ class U_I18N_API NumberFormatterSettings {
      * All units will be properly localized with locale data, and all units are compatible with notation styles,
      * rounding precisions, and other number formatter settings.
      *
+     * \note If the usage() is set, the output unit **will be changed** to
+     *       produce localised units, according to usage, locale and unit. See
+     *       FormattedNumber::getOutputUnit().
+     *
      * Pass this method any instance of {@link MeasureUnit}. For units of measure:
      *
      * <pre>
      * NumberFormatter::with().unit(MeasureUnit::getMeter())
+     * NumberFormatter::with().unit(MeasureUnit::forIdentifier("foot-per-second", status))
      * </pre>
      *
      * Currency:
@@ -2038,6 +2043,54 @@ class U_I18N_API NumberFormatterSettings {
      */
     Derived scale(const Scale &scale) &&;
 
+#ifndef U_HIDE_DRAFT_API
+    /**
+     * Specifies the usage for which numbers will be formatted ("person",
+     * "road", "person", etc.)
+     *
+     * When a `usage` is specified, the output unit will change depending on the
+     * `Locale` and the unit quantity. For example, formatting length
+     * measurements specified in meters:
+     *
+     * `NumberFormatter::with().usage("person").unit(MeasureUnit::getMeter()).locale("en-US")`
+     *   * When formatting 0.25, the output will be "10 inches".
+     *   * When formatting 1.50, the output will be "4 feet and 11 inches".
+     *
+     * The input unit specified via unit() determines the type of measurement
+     * being formatted (e.g. "length" when the unit is "foot"). The usage
+     * requested will be looked for only within this category of measurement
+     * units.
+     *
+     * The output unit can be found via FormattedNumber::getOutputUnit().
+     *
+     * If the usage has multiple parts (e.g. "land-agriculture-grain") and does
+     * not match a known usage preference, the last part will be dropped
+     * repeatedly until a match is found (e.g. trying "land-agriculture", then
+     * "land"). If a match is still not found, usage will fall back to
+     * "default".
+     *
+     * Setting usage to an empty string clears the usage (disables usage-based
+     * localized formatting).
+     *
+     * @param usage A `usage` parameter from the units resource. See the
+     * unitPreferenceData in *source/data/misc/units.txt*, generated from
+     * `unitPreferenceData` in [CLDR's
+     * supplemental/units.xml](https://github.com/unicode-org/cldr/blob/master/common/supplemental/units.xml).
+     * @return The fluent chain.
+     * @draft ICU 68
+     */
+    Derived usage(StringPiece usage) const &;
+
+    /**
+     * Overload of usage() for use on an rvalue reference.
+     *
+     * @param usage The unit `usage`.
+     * @return The fluent chain.
+     * @draft ICU 68
+     */
+    Derived usage(StringPiece usage) &&;
+#endif // U_HIDE_DRAFT_API
+
 #ifndef U_HIDE_INTERNAL_API
 
     /**
@@ -2508,6 +2561,21 @@ class U_I18N_API FormattedNumber : public UMemory, public FormattedValue {
     inline StringClass toDecimalNumber(UErrorCode& status) const;
 #endif // U_HIDE_DRAFT_API
 
+#ifndef U_HIDE_DRAFT_API
+	/**
+     * Gets the resolved output unit.
+     *
+     * The output unit is dependent upon the localized preferences for the usage
+     * specified via NumberFormatterSettings::usage(), and may be a unit with
+     * UMEASURE_UNIT_MIXED unit complexity (MeasureUnit::getComplexity()), such
+     * as "foot+inch" or "hour+minute+second".
+     *
+     * @return `MeasureUnit`.
+     * @draft ICU 68
+     */
+    MeasureUnit getOutputUnit(UErrorCode& status) const;
+#endif // U_HIDE_DRAFT_API
+
 #ifndef U_HIDE_INTERNAL_API
 
     /**