Engineering & Construction
Rebar Development Length Calculator
Multiply a bar diameter by the development multiple you enter.
Free forever.
Development length is the multiple you enter, times the bar diameter. Change the multiple to match the drawing. This is not a code check.
Result
Press Calculate.
Result
Press Calculate.
How to use the Rebar Development Length Calculator
- Enter the bar diameter in millimetres.
- Enter the multiple of diameter from the drawing, or a planning figure you are testing.
- Read the length in millimetres and metres.
Questions
Does this follow a design code?
No. It multiplies the diameter by the number you type. Bond, cover, hooks and bar position are not calculated.
What is the starting multiple?
40. Replace it with the figure on your drawing.
This runs entirely in your browser. Nothing you type is sent to a server.