diff --git a/src/tests/utils/time.test.ts b/src/tests/utils/time.test.ts
index 8d869bc..6b8c96c 100644
--- a/src/tests/utils/time.test.ts
+++ b/src/tests/utils/time.test.ts
@@ -1,4 +1,4 @@
-import { showDate, strToSeconds } from "../../utils/time";
+import { nextTimeUnit, showDate, strToSeconds, TimeSecond } from "../../utils/time";
 
 describe("Date with correct timezone", () => {
   const map = new Map([["u_time_at", "@"]]);
@@ -39,10 +39,48 @@ describe("String time to seconds", () => {
     });
   }
   {
-    // todo: see https://git.mylloon.fr/ConfrerieDuKassoulait/Botanique/issues/183
     const name = "12h30";
     test(name, () => {
-      /* expect(strToSeconds(name)).toBe(45000); */
+      expect(strToSeconds(name)).toBe(45000);
+    });
+  }
+  {
+    const name = "12s30";
+    test(name, () => {
+      expect(strToSeconds(name)).toBe(42);
+    });
+  }
+  {
+    const name = "1w30h20";
+    test(name, () => {
+      expect(strToSeconds(name)).toBe(714000);
+    });
+  }
+});
+
+describe("Next time unit", () => {
+  {
+    const name = TimeSecond.Minute;
+    test(name.toString(), () => {
+      expect(nextTimeUnit(name)).toBe(TimeSecond.Second);
+    });
+  }
+  {
+    const name = TimeSecond.Hour;
+    test(name.toString(), () => {
+      expect(nextTimeUnit(name)).toBe(TimeSecond.Minute);
+    });
+  }
+  {
+    const name = TimeSecond.Second;
+    test(name.toString(), () => {
+      expect(nextTimeUnit(name)).toBe(TimeSecond.Second);
+    });
+  }
+  {
+    const name = TimeSecond.Year;
+    test(name.toString(), () => {
+      expect(nextTimeUnit(name)).toBe(TimeSecond.Week);
     });
   }
 });
diff --git a/src/utils/time.ts b/src/utils/time.ts
index 51b3b70..e25d93d 100644
--- a/src/utils/time.ts
+++ b/src/utils/time.ts
@@ -22,7 +22,7 @@ export const showDate = (tz: string, locale: Map<string, unknown>, date: Date) =
   return `${formattedDate[0]} ${locale.get("u_time_at")} ${formattedDate[1]}`;
 };
 
-enum TimeSecond {
+export enum TimeSecond {
   Year = 31536000,
   Week = 604800,
   Day = 86400,
@@ -31,6 +31,18 @@ enum TimeSecond {
   Second = 1,
 }
 
+/**
+ * Get next time unit. For example the next unit after Hour is Minute
+ * @param currentUnit Current time unit
+ * @returns The next time unit
+ */
+export const nextTimeUnit = (currentUnit: number) => {
+  const units = Object.values(TimeSecond) as number[];
+
+  const index = units.indexOf(currentUnit);
+  return units[index + 1] || TimeSecond.Second;
+};
+
 /**
  * Take a cooldown, for example 2min and transform it to seconds, here: 120s
  * @param time time in human format
@@ -42,14 +54,15 @@ export const strToSeconds = (time: string) => {
     return -1;
   }
 
+  const noUnit = "unmarked";
   const regex = RegexC(
-    `(?<${TimeSecond[TimeSecond.Year]}>[0-9]+(?=[y|a]))|(?<${
-      TimeSecond[TimeSecond.Week]
-    }>[0-9]+(?=[w]))|(?<${TimeSecond[TimeSecond.Day]}>[0-9]+(?=[d|j]))|(?<${
-      TimeSecond[TimeSecond.Hour]
-    }>[0-9]+(?=[h]))|(?<${TimeSecond[TimeSecond.Minute]}>[0-9]+(?=[m]))|(?<${
-      TimeSecond[TimeSecond.Second]
-    }>[0-9]+(?=[s]?))`,
+    `(?<${TimeSecond[TimeSecond.Year]}>[0-9]+(?=[y|a]))|` +
+      `(?<${TimeSecond[TimeSecond.Week]}>[0-9]+(?=[w]))|` +
+      `(?<${TimeSecond[TimeSecond.Day]}>[0-9]+(?=[d|j]))|` +
+      `(?<${TimeSecond[TimeSecond.Hour]}>[0-9]+(?=[h]))|` +
+      `(?<${TimeSecond[TimeSecond.Minute]}>[0-9]+(?=[m]))|` +
+      `(?<${TimeSecond[TimeSecond.Second]}>[0-9]+(?=[s]))|` +
+      `(?<${noUnit}>[0-9]+)`,
     RegExpFlags.Global | RegExpFlags.Insensitive,
   );
 
@@ -60,10 +73,19 @@ export const strToSeconds = (time: string) => {
   }
 
   let res = 0;
+  let lastUnit = TimeSecond.Second;
   data.forEach((match) => {
     Object.entries(match.groups!).forEach(([key, value]) => {
       if (value) {
-        res += +value * TimeSecond[key as keyof typeof TimeSecond];
+        let unit;
+        if (key === noUnit) {
+          unit = nextTimeUnit(lastUnit);
+          res += +value * unit;
+        } else {
+          unit = TimeSecond[key as keyof typeof TimeSecond];
+          res += +value * unit;
+        }
+        lastUnit = unit;
       }
     });
   });