Bike Size

The Cycle Revolution Bike Sizing Guide

Considerations

Measure your height

To help find the right size bike you will need to measure both your height and your inside leg.
For your height:
Stand against a wall and mark the wall with a pencil so it's level with the top of your head. Then measure from the ground up to the mark (having someone to help might make this easier). For your inside leg measurement, stand against a wall and using a book hold it in between your legs tucked into your groin and make sure it's flat against the wall. Measure the height from the floor to the book. (Again it might be easier and more fun to get a friend to help).
If your height falls on the cusp of the stated size range, your reach will be the deciding factor in which size you go for. To work out what sort of reach you have you will need to measure your “Ape Index”. This is your arm span deducted from your height. If you have a positive ape index then it means you’re better going for the larger size, but if you have a negative ape index go for a smaller size.

The type of bike

The type of bike you choose and your style of riding will affect the size of bike that you buy. For example, a mountain biker that rides aggressively, shredding gnar, may want something more manoeuvrable so could prefer a size smaller than they would normally take. Similarly, a cross country racer that is looking for something of a flatter and speedier mountain bike might prefer a size larger than they would normally take.

There is no definitive right or wrong size, it all comes down to your personal preference and what feels comfortable for you.

How bikes are measured

Bikes are usually measured by their seat tube length. This measurement is normally either from the centre of the bottom bracket (BB) or the centre of the bolt that attachs the crank arms.
This can differ by brand, some of them measure to the top of where the top tube meets the seat tube, or even the centre of the top tube. Which is why this guide should only be treated as a rough idea to sizing. Check with one of our experienced staff for a better, more accurate fit.
Mountain bikes are either measured in inches or descriptive sizes (small, medium etc). Road bikes are in centimetres or descriptive sizes where as Hybrid bikes can be any one of the three. Bikes also get longer as they go up in size (relative to the frame size) but different brands can be inherently longer or shorter than others.

Children's bikes are measured by wheel size.

Stand over height

Stand over height: this is how tall the frame is from the ground. Stand over height measurements are to the top of the top-tube. Ideally you want at least 2cm of clearance between you and the frame. In theory your stand over height is your inside leg measurement minus 2cm. By measuring your inside leg with your shoes on you can establish your stand over height. In the case that you need to jump off the saddle quickly, the clearance between you and the frame should prevent any injuries.

Bike Sizing

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ROAD BIKE

Most road bikes come in two styles – racing road bikes (long in the top tube and low at the front for faster riding) and sportive road bikes (which tend to have shorter top tubes and higher front ends for extra comfort). In recent years there's also been a rise in cyclocross bikes, which are for more casual off road rides, and that’s led to the creation of adventure road bikes – a lightweight, drop-bar bike for a mix of terrains, roads and trails. For more information on road bikes and adventure road bikes visit our buying guide.

Men's Road Bike

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Feet & Inches

RIDER HEIGHT

4'10" - 5'0"

5'0" - 5'3"

5'3" - 5'6"

5'6" - 5'9"

5'9" - 6'0"

6'0" - 6'3"

6'3" - 6'6"

SUGGESTED FRAME SIZE

XX-Small (47cm - 48cm)

X-Small (49cm - 50cm)

Small (51cm - 53cm)

Medium (54cm - 55cm)

Large (56cm - 58cm)

X-Large (58cm - 60cm)

XX-Large (61cm - 63cm)

Check out our Men's Road Bikes: HERE

Centimetres

RIDER HEIGHT

148cm - 152cm

152cm - 160cm

160cm - 168cm

168cm - 175cm

175cm - 183cm

183cm - 191cm

191cm - 198cm

SUGGESTED FRAME SIZE

XX-Small (47cm - 48cm)

X-Small (49cm - 50cm)

Small (51cm - 53cm)

Medium (54cm - 55cm)

Large (56cm - 58cm)

X-Large (58cm - 60cm)

XX-Large (61cm - 63cm)

Check out our Men's Road Bikes: HERE

Women's Road Bike

Many bikes are designed with the female form in mind. So they accommodate a shorter reach, narrower shoulders and smaller hands. But there’s absolutely no reason why a woman can’t ride a unisex or male bike, so don’t restrict yourself – just make sure you test ride it first.

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Feet & Inches

RIDER HEIGHT

4'10" - 5'1"

5'1" - 5'3"

5'3" - 5'5"

5'5" - 5'8"

5'8" - 5'10"

SUGGESTED FRAME SIZE

XX-Small (44cm - 46cm)

X-Small (47cm - 49cm)

Small (50cm - 52cm)

Medium (53cm - 55cm)

Large (56cm - 57cm)

Check out our Women's Road Bikes: HERE

Centimetres

RIDER HEIGHT

147cm - 155cm

155cm - 160cm

160cm - 165cm

165cm - 172cm

172cm - 180cm

SUGGESTED FRAME SIZE

XX-Small (44cm - 46cm)

X-Small (47cm - 49cm)

Small (50cm - 52cm)

Medium (53cm - 55cm)

Large (56cm - 57cm)

Check out our Women's Road Bikes: HERE

Women's Mountain Bike

Women’s MTBs tend to be shorter in length, have narrower handlebars and smaller frame sizes. They also have specific saddles and often have their own colour scheme too. Like other MTBs, these designs are measured in the same way (from the centre of the bottom bracket to the top of the seat tube) but there’s no reason why you shouldn’t try a unisex MTB.

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Feet & Inches

RIDER HEIGHT

4'10" - 5'2"

5'2" - 5'6"

5'7" - 5'9"

5'10" - 6'1"

FRAME SIZE

13" - 14"

15" - 16"

17" - 18"

19"+

RIDER HEIGHT

4'10" - 5'2"

5'2" - 5'6"

5'7" - 5'9"

5'10" - 6'1"

FRAME SIZE

X-Small Bikes

Small Bikes

Medium Bikes

Large Bikes

Check out our Women's Mountain Bikes: HERE

Centimetres

RIDER HEIGHT

148cm - 158cm

158cm - 168cm

168cm - 178cm

178cm - 185cm

FRAME SIZE

33 - 37

38 - 42

43 - 47

48 +

RIDER HEIGHT

148cm - 158cm

158cm - 168cm

168cm - 178cm

178cm - 185cm

FRAME SIZE

X-Small Bikes

Small Bikes

Medium Bikes

Large Bikes

Check out our Women's Mountain Bikes: HERE

Men's Mountain Bike

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Feet & Inches

RIDER HEIGHT

4'10" - 5'2"

5'2" - 5'6"

5'6" - 5' 10"

5'10" - 6'1"

6'1" - 6'4"

6'4" - 6'6"

FRAME SIZE

13" - 14"

15" - 16"

17" - 18"

19" - 20"

21" - 22"

23" - 24"

Check out our Men's Mountain Bikes: HERE

Centimetres

RIDER HEIGHT

148cm - 158cm

158cm - 168cm

168cm - 178cm

178cm - 185cm

185cm - 193cm

193cm - 198cm

FRAME SIZE

33 - 37

38 - 42

43 - 47

48 - 52

53 - 57

58 - 61

Check out our Men's Mountain Bikes: HERE

Men's Hybrid Bike

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Feet & Inches

RIDER HEIGHT

4'10" - 5'2"

5'2" - 5'6"

5'6" - 5' 10"

5'10" - 6'1"

6'1" - 6'4"

6'4" - 6'6"

FRAME SIZE

13" - 14"

15" - 16"

17" - 18"

19" - 20"

21" - 22"

23" - 24"

RIDER HEIGHT

4'10" - 5'2"

5'2" - 5'6"

5'6" - 5' 10"

5'10" - 6'1"

6'1" - 6'4"

6'4" - 6'6"

FRAME SIZE

X-Small Bikes

Small Bikes

Medium Bikes

Large Bikes

X-Large Bikes

XX-Large Bikes

Check out our Men's Hybrid Bikes: HERE

Centimetres

RIDER HEIGHT

148cm - 158cm

158cm - 168cm

168cm - 178cm

178cm - 185cm

185cm - 193cm

193cm - 198cm

FRAME SIZE

33 - 37

38 - 42

43 - 47

48 - 52

53 - 57

58 - 61

RIDER HEIGHT

148cm - 158cm

158cm - 168cm

168cm - 178cm

178cm - 185cm

185cm - 193cm

193cm - 198cm

FRAME SIZE

X-Small Bikes

Small Bikes

Medium Bikes

Large Bikes

X-Large Bikes

XX-Large Bikes

Check out our Men's Hybrid Bikes: HERE

Women's Hybrid Bike

Women's hybrids differ to male/unisex hybrids. They tend to be shorter in length with narrower handlebars and smaller frame sizes. In some cases they’ll have a step through frame where the top tube drops down, meeting the seat tube much lower. In some cases a male/unisex hybrid may suit you better.

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Feet & Inches

RIDER HEIGHT

4'10" - 5'2"

5'2"" - 5'6""

5'6" - 5' 10"

5'10" - 6'1"

FRAME SIZE

13" - 14"

15" - 16"

17" - 18"

19"+

Check out our Women's Hybrid Bikes: HERE

Centimetres

RIDER HEIGHT

148cm - 158cm

158cm - 168cm

168cm - 178cm

178cm - 185cm

FRAME SIZE

X-Small Bikes

Small Bikes

Medium Bikes

Large Bikes

Check out our Women's Hybrid Bikes: HERE

Men's Electric Hybrid Bike

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Feet & Inches

RIDER HEIGHT

4'10" - 5'2"

5'2" - 5'6"

5'6" - 5' 10"

5'10" - 6'1"

6'1" - 6'4"

6'4" - 6'6"

FRAME SIZE

13" - 14"

15" - 16"

17" - 18"

19" - 20"

21" - 22"

23" - 24"

Check out our Men's Electric Hybrid Bikes: HERE

Centimetres

RIDER HEIGHT

148cm - 158cm

158cm - 168cm

168cm - 178cm

178cm - 185cm

185cm - 193cm

193cm - 198cm

FRAME SIZE

33 - 37

38 - 42

43 - 47

48 - 52

53 - 57

58 - 61

RIDER HEIGHT

148cm - 158cm

158cm - 168cm

168cm - 178cm

178cm - 185cm

185cm - 193cm

193cm - 198cm

FRAME SIZE

X-Small Bikes

Small Bikes

Medium Bikes

Large Bikes

X-Large Bikes

XX-Large Bikes

Check out our Men's Electric Hybrid Bikes: HERE

Women's Electric Hybrid Bike

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Feet & Inches

RIDER HEIGHT

4'10" - 5'2"

5'2"" - 5'6""

5'6" - 5' 10"

5'10" - 6'1"

FRAME SIZE

13" - 14"

15" - 16"

17" - 18"

19"+

RIDER HEIGHT

4'10" - 5'2"

5'2"" - 5'6""

5'6" - 5' 10"

5'10" - 6'1"

FRAME SIZE

X-Small Bikes

Small Bikes

Medium Bikes

Large Bikes

Check out our Women's Electric Hybrid Bikes: HERE

Centimetres

RIDER HEIGHT

148cm - 158cm

158cm - 168cm

168cm - 178cm

178cm - 185cm

FRAME SIZE

X-Small Bikes

Small Bikes

Medium Bikes

Large Bikes

Check out our Women's Electric Hybrid Bikes: HERE

Men's Electric Mountain Bike

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Feet & Inches

RIDER HEIGHT

4'10" - 5'2"

5'2" - 5'6"

5'6" - 5' 10"

5'10" - 6'1"

6'1" - 6'4"

6'4" - 6'6"

FRAME SIZE

13" - 14"

15" - 16"

17" - 18"

19" - 20"

21" - 22"

23" - 24"

RIDER HEIGHT

4'10" - 5'2"

5'2" - 5'6"

5'6" - 5' 10"

5'10" - 6'1"

6'1" - 6'4"

6'4" - 6'6"

FRAME SIZE

X-Small Bikes

Small Bikes

Medium Bikes

Large Bikes

X-Large Bikes

XX-Large Bikes

Check out our Men's Electric Mountain Bikes: HERE

Centimetres

RIDER HEIGHT

148cm - 158cm

158cm - 168cm

168cm - 178cm

178cm - 185cm

185cm - 193cm

193cm - 198cm

FRAME SIZE

33 - 37

38 - 42

43 - 47

48 - 52

53 - 57

58 - 61

Check out our Men's Electric Mountain Bikes: HERE

Women's Electric Mountain Bike

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Feet & Inches

RIDER HEIGHT

4'10" - 5'2"

5'2"" - 5'6""

5'6" - 5' 10"

5'10" - 6'1"

FRAME SIZE

13" - 14"

15" - 16"

17" - 18"

19"+

Centimetres

RIDER HEIGHT

148cm - 158cm

158cm - 168cm

168cm - 178cm

178cm - 185cm

FRAME SIZE

X-Small Bikes

Small Bikes

Medium Bikes

Large Bikes

Men's Electric Road Bike

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Feet & Inches

RIDER HEIGHT

4'10" - 5'0"

5'0" - 5'3"

5'3" - 5'6"

5'6" - 5'9"

5'9" - 6'0"

6'0" - 6'3"

6'3" - 6'6"

FRAME SIZE

XX-Small

X-Small

Small

Medium

Large

X-Large

XX-Large

Check out our Men's Electric Road Bikes: HERE

Centimetres

RIDER HEIGHT

148cm - 152cm

152cm - 160cm

160cm - 168cm

168cm - 175cm

175cm - 183cm

183cm - 191cm

191cm - 198cm

FRAME SIZE

47cm - 48cm

49cm - 50cm

51cm - 53cm

54cm - 55cm

56cm - 58cm

58cm - 60cm

61cm - 63cm

Check out our Men's Electric Road Bikes: HERE

Women's Electric Road Bike

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Feet & Inches

RIDER HEIGHT

4'10" - 5'1"

5'1" - 5'3"

5'3" - 5'5"

5'5" - 5'8"

5'8" - 5'10"

FRAME SIZE

XX-Small

X-Small

Small

Medium

Large

Check out our Women's Electric Road Bikes: HERE

Centimetres

RIDER HEIGHT

147cm - 155cm

155cm - 160cm

160cm - 165cm

165cm - 172cm

172cm - 180cm

FRAME SIZE

44cm - 46cm

47cm - 49cm

50cm - 52cm

53cm - 55cm

56cm - 57cm

RIDER HEIGHT

147cm - 155cm

155cm - 160cm

160cm - 165cm

165cm - 172cm

172cm - 180cm

FRAME SIZE

XX-Small

X-Small

Small

Medium

Large

Check out our Women's Electric Road Bikes: HERE

Child's Bike

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Feet & Inches

RIDER HEIGHT

up to 3"

3' - 3'5"

3'5" - 3'9"

3'9" - 4'5"

4'5" - 5'

5'+

WHEEL SIZE

12"

14-16"

18-20"

24"

26-27.5" & 700c

Check out our Boy's Bikes: HERE

Check out our Girl's Bikes: HERE

Centimetres

RIDER HEIGHT

up to 90cm

90cm - 105cm

105cm - 118cm

118cm - 135cm

135cm - 150cm

150cm+

WHEEL SIZE

12"

14-16"

18-20"

24"

26-27.5" & 700c

Check out our Boy's Bikes: HERE

Check out our Girl's Bikes: HERE

Age Range

AGE RANGE

under 2 years

2 - 4 years

4 - 7 years

7 - 10 years

10 - 13 years

13 years +

WHEEL SIZE

12"

14-16"

18-20"

24"

26-27.5" & 700c

Check out our Boy's Bikes: HERE

Check out our Girl's Bikes: HERE

Inside Leg

INSIDE LEG

40cm

46cm

53cm

62cm

69cm

WHEEL SIZE

12"

14-16"

18-20"

24"

26-27.5" & 700c

Check out our Boy's Bikes: HERE

Check out our Girl's Bikes: HERE

How are electric HYBRID bikes measured?

Hybrid bikes are measured from the centre of the bottom bracket (BB) to the top of the seat tube. You might find however that some hybrid manufacturers will measure their bikes slightly differently, depending on the style of the bike. Don't forget you'll need your height and your inside leg measurement. Hybrid bikes are typically sized in S, M, L and XL but there are some models that are sized in inches. This will vary depending on the brand. Always check the manufacturers measurements or visit a store to speak to a experienced member of staff.

How are electric MTBs measured?

MTB's are measured from the centre of the bottom bracket (BB) to the top of the seat tube. To give a rider more stand over height, MTB top tubes often slope down and join the seat tube lower than road bikes. So it’s worth taking your inside leg measurement and comparing it to the manufacturers model. Always check the manufacturer’s measurements or visit a store to speak to an experienced member of staff.

How are electric ROAD bikes measured?

Road bike manufacturers measure their bikes slightly differently. Some will measure centre of the BB to the top of the top tube (centre to top) or centre of the BB to the centre of the top tube (centre to centre). And bear in mind that a lot of road bikes have sloping top tubes so the measurements can alter – these are often sized S, M, L and XL