SEAGReady
MeasurementP6 level20 questions in the full course

Convert Between Time FormatsSEAG Practice Questions

Converting times between 12-hour (am/pm) and 24-hour formats in both directions.

Where your child meets this in real life: Converting between formats when planning journeys or scheduling events

What your child needs to know

SEAGReady breaks convert between time formats into 3 steps, taught in order so each skill builds on the last.

  1. 1

    Morning Times (1am-11am)

    Convert times between 1am-11:59am and 01:00-11:59 in both directions

  2. 2

    Afternoon & Evening

    Convert times between 1pm-11:59pm and 13:00-23:59 in both directions using add/subtract 12 rule

  3. 3

    Midnight & Noon Hours

    Convert times involving 12am (midnight hour) and 12pm (noon hour) correctly, recognising exceptions to the add 12 rule

Try these SEAG-style questions

Three free sample questions from our convert between time formats course. Every question comes with a full explanation, and hints that guide without giving the answer away.

Question 1Confidence builder

Josh's swimming lesson time is shown on a 12-hour display. What time should he look for on a 24-hour booking system?

A digital lesson display showing 8:30 am.
Answer choices for question 1
Question 2Confidence builder

Sam checks the clock when his piano lesson finishes. What time is this in 12-hour format?

A digital music-room clock showing 16:30.
Answer choices for question 2
Question 3Confidence builder

Fiadh's lunch break starts at 12:30 pm. What is this in 24-hour format?

Answer choices for question 3

Try the lesson: Morning Times (1am-11am)

This is the exact interactive worked example your child sees in SEAGReady. Step through it and watch the method build up.

Isla has a dentist appointment at 9:15 am. The receptionist writes it down in 24-hour time.

What time does the receptionist write?

9:15 am to 24-hour

Check if it's morning or afternoon
1

The time says 'am' so it's morning

Step 1 of 4

Prefer to read? See every step written out

Isla has a dentist appointment at 9:15 am. The receptionist writes it down in 24-hour time.

What time does the receptionist write?

  1. 1

    Check if it's morning or afternoon

    • The time says 'am' so it's morning
    • Morning times stay almost the same in 24-hour format
  2. 2

    Add the leading zero

    • Single-digit hours need a zero in front
    • 9 becomes 09, minutes stay as 159:15 am = 09:15

The receptionist writes 09:15.

The key insight: Morning times just need a leading zero - no maths needed!

Common mix-up: 9:15 am = 9:15 (no leading zero). 24-hour time always uses two digits for hours: 01, 02, 03... up to 23.

Mistakes to watch for

These are the misconceptions we see most often in convert between time formats, including the ones our practice questions are specifically designed to catch.

  • Adding 12 to all pm times (including 12 pm which stays as 12:00)
  • Writing 12:30 am as 12:30 instead of 00:30
  • Forgetting to add/subtract 12 when converting

Build these skills first

Struggling with convert between time formats? The real gap is often in one of these earlier topics.

More measurement practice

20 questions on this topic alone

Master convert between time formats and everything it unlocks

SEAGReady finds the exact step where your child gets stuck, teaches it with worked examples like the one above, and brings it back for review so it sticks.

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