Lock Grade Selection Calculator

ANSI/BHMA lock grade from traffic and security requirements.

Traffic level

Security need

Building type

ADA required?

Exterior door?

Fire-rated door?

Tab to move between fields

Recommended ANSI grade

Security score11

Min cycle life400,000

Typical lockset cost$130.00

Closer required (1/0)1

Closer cost$150.00

Max opening force (lbf)8.5

Total per opening$280.00

How to Use This Calculator

Enter the door location (exterior, interior, high-traffic commercial, residential).
Set the security requirement level based on risk assessment.
Input the expected door cycles per day to verify grade durability rating.
Review the recommended ANSI/BHMA grade (Grade 1 for commercial, Grade 2 for light commercial, Grade 3 for residential).
Select a lock with a cycle rating exceeding the expected lifetime door cycles.

What each input means

Traffic level: 1 = Low (<50 cycles/day), 2 = Medium (50-250), 3 = High (250-1000), 4 = Very high (1000+).
Security need: 1 = Minimal (interior), 2 = Moderate (exterior residential), 3 = High (commercial), 4 = Maximum (restricted).
Building type: 1 = Residential, 2 = Commercial, 3 = Institutional (hospital/school), 4 = High-security (gov/financial).
ADA required?: 1 if ADA accessibility compliance is required, 0 otherwise.
Exterior door?: 1 for exterior/entry door, 0 for interior door.
Fire-rated door?: 1 if the door is fire-rated (requires UL-listed hardware), 0 otherwise.

Recommended ANSI grade: ANSI/BHMA Grade 1 (best), 2 (commercial), or 3 (residential).
Security score: Weighted score used to determine grade recommendation.
Min cycle life: Minimum lock cycle test requirement for the recommended grade.
Typical lockset cost: Average cost per lockset at the recommended grade.
Closer required (1/0): Whether a door closer is required by code or best practice.
Closer cost: Cost for a door closer at the recommended grade level.
Max opening force (lbf): Maximum allowed opening force per ADA or fire code requirements.
Total per opening: Estimated total cost per door opening including lockset and closer.

Identify Input Parameters
4 parameters
Traffic level = 2, Security need = 2, Building type = 2, ADA required? = 1 = 6 input(s) provided
Calculate Recommended ANSI grade
2 = 2
Calculate Security score
11 = 11
Calculate Min cycle life
Min cycle life = Record<number
400000 = 400000