About ReliabilityCalc
A professional platform developed by reliability engineering experts, providing industry-standard calculators and quality management tools trusted by Fortune 500 companies, engineering consultancies, and educational institutions worldwide.
Built by Reliability Engineering Professionals
Our team consists of certified reliability engineers with 15+ years of combined experience in manufacturing, aerospace, automotive, and process industries. Every calculator and tool is validated against industry standards including IEEE, IEC, and ASME guidelines.
Industry Certified
ASQ Certified Reliability Engineer (CRE) and Six Sigma Black Belt professionals
Standards Compliant
All calculations follow IEEE 493, MIL-HDBK-217, and IEC 61508 standards
Peer Reviewed
All formulas and methods reviewed by industry experts and university professors
Our Mission
To democratize access to professional-grade reliability engineering and quality management tools, empowering engineers and professionals worldwide to make data-driven decisions that improve system reliability, reduce downtime, and optimize operational efficiency.
Who We Serve
- • Reliability Engineers & Analysts
- • Maintenance Managers & Technicians
- • Quality Professionals & Six Sigma Practitioners
- • Plant Operators & Manufacturing Engineers
- • Engineering Students & Educators
- • Consultants & Enterprise Teams
Professional Reliability Calculators
MTTR Calculator
Calculate Mean Time To Repair with multiple input methods, time unit conversions, and industry benchmarks for maintenance efficiency analysis.
MTBF Calculator
Calculate Mean Time Between Failures for reliability assessment, operating time analysis, and failure rate calculations.
Availability Calculator
Measure system availability percentage using uptime/downtime calculations and MTBF/MTTR methodology.
OEE Calculator
Calculate Overall Equipment Effectiveness using three-factor analysis: Availability × Performance × Quality metrics.
7 Basic Quality Management Tools
Pareto Chart
Interactive 80/20 analysis with cumulative percentage visualization and priority ranking.
Fishbone Diagram
Root cause analysis using Ishikawa methodology with 6M categories (Man, Machine, Material, Method, Measurement, Environment).
Histogram
Data distribution analysis with automatic binning, statistical calculations, and normal distribution overlay.
Control Chart
Statistical process control with multiple chart types (X-bar, R, p, np, c, u) and control limits calculation.
Check Sheet
Systematic data collection with frequency tracking and custom categories for quality monitoring.
Scatter Diagram
Correlation analysis with relationship visualization and statistical correlation coefficients.
Flowchart
Process mapping with workflow analysis and decision trees for process optimization.
Why Choose ReliabilityCalc?
Industry-Standard
Professional-grade formulas and validated calculations following industry best practices.
Lightning Fast
Built with Next.js 15+ for optimal performance and instant calculations.
Mobile-First
Responsive design optimized for all devices with dark/light mode support.
Always Evolving
Continuously updated with new features, tools, and improvements based on user feedback.
Ready to Optimize Your Operations?
Join thousands of professionals who trust ReliabilityCalc for their reliability engineering and quality management needs. All tools are completely free with no registration required.