what size bike should I get , yellow tape measure

What Size Bike Should You Buy

Bike fitting, what is it ? Basically it is ensuring that you get the right size frame for you body and inside leg size. The size is important for many reasons and one is economy of motion, get it right and you will get more power each pedal. Get it wrong not only do you loose power you also risk back and knee pain.

You need to gain every advantage you can when cycling to make it as comfortable as possible. There are a few methods of measuring for bike fitting. The first basic measurement is just you height. How much should you spend on a bike?

For precise measurements for bike fitting is just the length of the inside leg.

Size Chart For Road Bikes

Height (ft/in)Height (cm)Suggested Frame Size(Size)
4`10”-5`0”148-152 cm47-48 cm(XXS)
5`0″-5`3″152-160 cm49-50 cm(XS)
5`3″-5`6″160-168 cm51-52-53 cm(S)
5`6″-5`9″168-175 cm54-55 cm(M)
5`9″-6`0″175-183 cm56-57-58 cm(L)
6`0″-6`3″183-191 cm58-59-60 cm(XL)
6`3″-6`6″191-198 cm61-62-63 cm(XXL)

Mountain Bike Size Chart

Mountain bikes obviously have a different purpose from road bikes. You are in a much more upright position so the sizing is different. Also the wheel size comes into play as well, you want a bike that is comfortable to control.

When you are off road you want to feel confidant in the handling of the frame you are riding. A correctly fitted size frame will help you achieve this.

Height (ft/in)Height (cm)Leg inseam (inches)Leg inseam (cm)Suggested Frame Size (in)Suggested Wheel Size
4’10 – 5’3″147-160cm25 – 28″62-70 cm13 – 14″26″
5’4 “- 5’7”160 – 170cm25 – 30″63 – 76 cm15 – 16″26″
5’5″ – 5’9″165 – 175cm26 – 31″66 – 78 cm16 – 17″27.5″
5’9″ – 6’0″175 – 183cm27 – 32″68 – 81 cm17 – 18″27.5″
6’0″ – 6’3″183 – 190cm28 – 33″71 – 83 cm18 – 19″29″
6’1″ – 6’6″190 – 200cm29 – 34″73 – 86 cm19″ +29″
Group of cyclists

Kids Bike Size Chart

Unfortunately many parents buy a bigger bike than is needed because of budget. The hope that it will last longer, but in fact there will be no enjoyment for the child riding the wrong size bike.

If budget is a concern we would recommend that you look at the second hand cycle market instead. It’s much better to have a correctly fitted frame than what brand of bike you have got.

AgeHeight (Inch)Height (cm)Leg Inseam (Inch)Leg Inseam (cm)Bike Tire Size
22’9″ – 3’1″85-90cm12″ – 14″85 – 90cm10″
3-43’1″ – 3’3″90-100cm14″-17″35-42cm12″
4-53’3″ – 3’7″100-110cm16″-20″40-50cm14″
5-63’7″ – 3-8″110-115cm18″-22″45-50cm16″
6-83’8″ – 4’0″115-120cm20″-24″50-60cm18″
7-94’0″ – 4’5″120-135cm22″-25″55-63cm20″
9-114’5″ – 4’9″135-145cm24″-28″60-72cm24″
11-145’+145cm +28″+72cm+26″

Advance Bike Size Calculator

If you want to ensure that you get the perfectly fitted bike then we suggest that you use the calculations below.

  • Measure your inside leg . While standing with your legs either together or apart, you need to measure the length of your leg on the inner side.
  • Calculate!
    • Mountain bikes – x 0.685 = Your frame size (in cm)
    • Road bikes – x 0.70 = Your frame size (in cm)
    • City bike – X 0.685 = Your frame size (in cm)

So for example if your inside leg measurement is 65cm, and your want a mountain bike x it 0.685. That equals 44.525cm frame, or when converted not inches it is 17.5inch, we would suggest a 18inch frame.

Small Size Adjustments

Once you have the correct size frame bike you can then make minor adjustments to get the perfect bike fitting. The adjustment of the seat post up and down to get the correct distance for the pedals. There is also adjustment on the saddle of moving it backwards or forwards to ensure your knees align over the pedals in a rotation.

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