Lockout/Tagout Calculator

Calculate required locks, tags, and procedure time for energy isolation per OSHA 1910.147.

Energy Isolation Points

Available Lockout Devices

Authorized Workers

Procedure Steps

Verification Time per Source (min)

Tab to move between fields

Locks Required

Total Procedure Time (min)

Tag Sets Required12

Locks Sufficient0

Additional Locks Needed2

Labor Cost per Procedure$184.50

Additional Device Cost$24.00

How to Use This Calculator

Enter number of energy sources (electrical, hydraulic, pneumatic, gravitational) per machine.
Enter isolation device count and required lockout device quantities.
Read total energy control steps and minimum lockout device inventory needed.
Verify each authorized employee has their own personal padlock assigned.
Review the LOTO procedure against OSHA 1910.147 requirements for each identified energy source.

How the result changes with Energy Isolation Points

Energy Isolation Points: Number of energy sources requiring isolation.
Available Lockout Devices: Number of locks and hasps currently available.
Authorized Workers: Number of workers applying personal locks.
Procedure Steps: Total steps in the LOTO procedure.
Verification Time per Source (min): Minutes to verify zero energy per isolation point.

Identify Input Parameters
4 parameters
Energy Isolation Points = 4, Available Lockout Devices = 10, Authorized Workers = 3, Procedure Steps = 6 = 5 input(s) provided
Calculate Locks Required
Locks Required
12 = 12
Calculate Total Procedure Time
Total Procedure Time
82 = 82
Calculate Tag Sets Required
Tag Sets Required
12 = 12
Calculate Locks Sufficient
Locks Sufficient
0 = 0