Hazard Rate & Bathtub Curve Calculator
Analyze instantaneous failure rates h(t), cumulative hazard H(t), and model infant mortality, useful life, and wear-out phases.
Core Formula
λ(t) = f(t) / R(t) — Instantaneous failure rate
Governing Standards
- MIL-HDBK-217F
- IEC 62380 — Reliability Data Handbook
Frequently Asked Questions
What is the Bathtub Curve?
The hazard rate follows a bathtub shape: high early (infant mortality), low constant middle (useful life), and increasing late (wear-out). This guides maintenance strategies.