Taper and angle calculation  

Fill-in below, three of the parameters from your borehole,
then the remain parameter will be automaticaly calculated.

Cone angle α= ° '
Taper= %
D= Ø
L=
d= Ø
 Reset all
Here are the main used angles and tapers :

Taperα
1%1:10034'
2%*1:50*09'
3%3:10043'
4%1:2517'
5%*1:20*52'
5,25%
6%3:5026'
6,25%*1:16*35'
7%7:100
8%*2:25*35'
9%9:10009'
10%*1:10*43'
10,5%01'
11%18'
12%3:2552'
13%26'
14%
15%3:2035'
16%09'
18%10°17'
20%1:511°25'
21%12°
25%1:414°15'
28%15°56'
30%17°04'
40%22°37'
50%1:228°04'
60%33°24'
70%38°35'
80%43°36'
90%48°27'
100%1:153°08'
* Magafor Standard

TaperMorse Taperα
5,205%*CM0*2°58'54''
4,988%*CM1*2°51'26''
4,995%*CM2*2°51'40''
5,020%*CM3*2°52'32''
5,194%*CM4*2°58'30''
5,263%*CM5*3°00'52''
5,214%CM62°59'12''
* Magafor Standard 780 series