X Tables
Swimming Maths

Maths in swimming: stroke counts

Count strokes per length and compare.

Quick answer

Stroke counts in swimming help you track how many times you move your arms or legs during a swim. You can use this to compare how much effort different swimming styles take or to improve your swimming.

Learning outcome

By the end of this page, you will be able to count your stroke counts in swimming and compare how many strokes different swimming styles take. Success signs:
  • You can count your strokes when swimming a length
  • You can record your stroke counts for different swimming styles
  • You can compare which style takes more or fewer strokes
  • You can use this information to improve your swimming

Why this matters

Understanding stroke counts helps you become a better swimmer. When you know how many strokes you take for each length, you can see if you're using the right technique. For example, if you take more strokes than your friend, you might be swimming inefficiently. You can also use stroke counts to set goals for yourself. It's like keeping a swimming diary where you track your progress. This skill is useful for competitive swimmers and for anyone who wants to swim better and faster.

How it works

To count your stroke counts, follow these steps:
  1. Swim one length of the pool
  2. Count each time your arm or leg moves in a stroke
  3. Write down or remember your number
  4. Try a different swimming style and count again
  5. Compare your numbers to see which style takes more or fewer strokes

Examples you can see

Let's imagine you're swimming and counting your strokes: Example 1: Freestyle swimming You swim one length of the pool using freestyle. You count 20 strokes. This means you moved your arms 20 times to get from one end to the other. Example 2: Backstroke swimming You swim the same length using backstroke. This time you count 18 strokes. That means your arms moved 18 times. Example 3: Comparing styles You swim 3 lengths of the pool using freestyle and count 60 strokes total. You swim 3 lengths using backstroke and count 54 strokes total. This shows that backstroke takes fewer strokes than freestyle for the same distance. Example 4: Swimming with a partner You and your friend are swimming. You swim 10 lengths of the pool using breaststroke and count 100 strokes. Your friend swims the same distance using butterfly and counts 120 strokes. You can see that butterfly takes more strokes than breaststroke.

Try it as a mini adventure

Swimming Challenge: Stroke Detective You are a swimming detective trying to solve a mystery! You need to find out which swimming style takes the fewest strokes. Adventure Steps:
  1. Swim 5 lengths using freestyle and count your strokes each time
  2. Swim 5 lengths using backstroke and count your strokes each time
  3. Swim 5 lengths using breaststroke and count your strokes each time
  4. Swim 5 lengths using butterfly and count your strokes each time
  5. Record your results in a table
  6. Find out which style took the fewest strokes
What you'll discover: You might find that butterfly takes the most strokes because it's a powerful stroke. You might find that backstroke takes fewer strokes than freestyle. This is like being a scientist, testing different swimming styles to see which one is most efficient.

Common mistakes

  • Mistake: Counting strokes when your arms are not moving
    Why it happens: You might count a movement that isn't actually a stroke
    Fix: Only count when your arm or leg moves in a full stroke cycle
  • Mistake: Not counting consistently
    Why it happens: You might count every second stroke or skip some strokes
    Fix: Count each full stroke as one count, no matter what
  • Mistake: Confusing stroke counts with time
    Why it happens: You might think you're counting time instead of strokes
    Fix: Focus on counting how many times your body moves, not how long it takes
  • Mistake: Not swimming a full length
    Why it happens: You might stop early or change your stroke partway through
    Fix: Swim the whole length using the same stroke style

Parent and carer guide

As a parent or carer, you can help your child with stroke counting by:
  • Setting up a simple recording sheet for your child to write down their stroke counts
  • Encouraging your child to swim a few lengths and count their strokes
  • Helping your child compare their results with friends or family members
  • Using the counting as a fun way to track swimming progress
  • Not worrying if your child gets confused at first - counting strokes takes practice
  • Remembering that stroke counting is about improving technique, not about competition
  • Helping your child understand that different strokes take different amounts of effort
  • Using the results to set small, achievable goals
  • Being patient if your child makes mistakes - this is part of learning
  • Encouraging your child to try different swimming styles to see how they compare

Practice questions

  1. You swim 3 lengths using freestyle and count 15 strokes each time. How many strokes did you take in total?
    Answer: 45 strokes (3 lengths × 15 strokes = 45 strokes)
  2. You swim 2 lengths using backstroke and count 12 strokes each time. How many strokes did you take in total?
    Answer: 24 strokes (2 lengths × 12 strokes = 24 strokes)
  3. You swim 4 lengths using breaststroke and count 20 strokes each time. How many strokes did you take in total?
    Answer: 80 strokes (4 lengths × 20 strokes = 80 strokes)
  4. You swim 1 length using butterfly and count 24 strokes. How many strokes did you take in total?
    Answer: 24 strokes (1 length × 24 strokes = 24 strokes)
  5. You swim 5 lengths using freestyle and count 18 strokes each time. How many strokes did you take in total?
    Answer: 90 strokes (5 lengths × 18 strokes = 90 strokes)

FAQ

What is a stroke count?

A stroke count is how many times you move your arms or legs during one length of swimming. It helps you understand how much effort you're putting into each stroke.

Why do different swimming styles take different numbers of strokes?

Different swimming styles use different body movements. Some styles, like butterfly, require more powerful movements that take more strokes. Others, like backstroke, are more streamlined and may take fewer strokes.

How can I practice counting strokes at home?

You can practice by imagining swimming and counting each stroke. You can also watch swimming videos and try to count the strokes the swimmers take. Another way is to count your own arm movements when you're walking or doing exercises.

Is it important to count strokes if I'm just swimming for fun?

Not necessarily! Counting strokes is helpful if you want to improve your swimming or compare different styles. But if you're just swimming for fun, it's okay to focus on enjoying the water and your swimming.

Can I use stroke counts to get faster?

Yes! By counting your strokes, you can see which swimming styles are most efficient for you. If you're taking too many strokes, you might be swimming inefficiently. You can work on techniques to reduce your stroke count and swim faster.