Manufacturing Math Center
Production, takt, yield, throughput, material and cost models. 20 tools with purposes, formulas and worked examples.
Simple mode uses starting defaults for extra scenario controls. Advanced exposes those controls where available. Change an entry, then press Calculate.
Complete truth table
Formula, calculation steps & example
All 20 tools: purposes and formulas
- Observed production rate — Use the labeled measurements to calculate observed production rate.
A ÷ B (A, B, C refer to the labeled entries)
- Time at effective production rate — Use the labeled measurements to calculate time at effective production rate.
A ÷ B (A, B, C refer to the labeled entries)
- Average cycle time — Use the labeled measurements to calculate average cycle time.
A ÷ B (A, B, C refer to the labeled entries)
- Demand takt time — Use the labeled measurements to calculate demand takt time.
A ÷ B (A, B, C refer to the labeled entries)
- Output at entered rate — Use the labeled measurements to calculate output at entered rate.
A × B (A, B, C refer to the labeled entries)
- First-pass yield — Use the labeled measurements to calculate first-pass yield.
A ÷ B × 100 (A, B, C refer to the labeled entries)
- Scrap percentage — Use the labeled measurements to calculate scrap percentage.
A ÷ B × 100 (A, B, C refer to the labeled entries)
- Rework share — Use the labeled measurements to calculate rework share.
A ÷ B × 100 (A, B, C refer to the labeled entries)
- Machine busy share — Use the labeled measurements to calculate machine busy share.
A ÷ B × 100 (A, B, C refer to the labeled entries)
- Downtime share — Use the labeled measurements to calculate downtime share.
A ÷ B × 100 (A, B, C refer to the labeled entries)
- Material consumption budget — Use the labeled measurements to calculate material consumption budget.
A × B (A, B, C refer to the labeled entries)
- Variable production cost — Use the labeled measurements to calculate variable production cost.
A × B (A, B, C refer to the labeled entries)
- Allocated cost per unit — Use the labeled measurements to calculate allocated cost per unit.
A ÷ B (A, B, C refer to the labeled entries)
- Person-hour requirement — Use the labeled measurements to calculate person-hour requirement.
A × B (A, B, C refer to the labeled entries)
- Output per person-hour — Use the labeled measurements to calculate output per person-hour.
A ÷ B (A, B, C refer to the labeled entries)
- Whole batch count — Use the labeled measurements to calculate whole batch count.
ceiling(A ÷ B) (A, B, C refer to the labeled entries)
- Setup time total — Use the labeled measurements to calculate setup time total.
A × B (A, B, C refer to the labeled entries)
- Inventory days at entered demand — Use the labeled measurements to calculate inventory days at entered demand.
A ÷ B (A, B, C refer to the labeled entries)
- Packaging material requirement — Use the labeled measurements to calculate packaging material requirement.
A × B (A, B, C refer to the labeled entries)
- Entered tolerance interval width — Use the labeled measurements to calculate entered tolerance interval width.
A − B (A, B, C refer to the labeled entries)
Definitions and source references
Unit definitions and selected model references:
- Virginia Tech: wing geometry and mean aerodynamic chord
- Aircraft Design course: tail volume definitions
- Prusa: filament and printer calculation references
- NIST: SI defining constants
- NASA: aerodynamic lift models
- Horizon Hobby: product and battery documentation
- Smithsonian: Maya calendar units
- NIST: frequency intervals and cents
- NIST: binary prefixes
- NOAA: nautical miles and knots
- RFC 3021: IPv4 /31 point-to-point links
- MDN: exact integer arithmetic
- NIST: international-foot unit conversions
- NASA/JPL: astronomical unit definitions
- NASA: ideal rocket equation
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