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Operations decisions, resolved with real math.
A free, browser-first toolkit for planning and improving physical operations.
Decision Engines
The platform covers the decisions that drive physical operations. Engines connect into workflows so results from one decision can flow into the next.
Labor (6)
- Daily Shift Planner Plan a day's staffing from volume to coverage, then track that same day's actuals live against a plan-vs-actual bridge and executive summary.
- Overtime vs Hire Decision Compare total overtime cost against total hiring cost, including hiring cost and unused new-hire capacity.
- Shift Staffing and Coverage Planner Check staffing coverage shift by shift against expected attendance, not the raw schedule, and total labor hours and cost.
- Workload to Staffing Converter Convert a daily workload and labor standard into required labor hours and whole-person staffing.
Production (5)
- Order Feasibility Planner Check whether a new order fits your bottleneck capacity and due date, given backlog and start delay.
- Bottleneck Capacity Analyzer Turn step cycle times and available time into real line capacity, the constraint step, and the gap against demand.
- Production Capacity Planner Turn cycle time and available time into daily capacity, the takt time demand requires, and the resulting gap.
- Demand Growth Capacity Stress Test Compound a demand growth rate against current capacity to find the period, if any, a gap opens.
Scheduling (5)
- Production Completion Date Planner Turn order demand and schedule constraints into a realistic promised completion date.
- Finite Capacity Load Planner Sequence two or three orders against shared capacity and see exactly where the queue breaks.
- WIP Limit Decision Calculate the work-in-process cap that holds lead time at or under target using Little's Law, and compare a current WIP level against it.
- Dispatch Rule Comparator Compare SPT and EDD sequencing on a four-job queue to see which rule wins on average flow time versus on-time delivery.
Inventory (5)
- Service Level Cost Tradeoff Turn a target service level into the safety stock, reorder point, working capital, and residual stockout risk it requires.
- Stockout Cost Decision Price the annual cost of a stockout risk against the real annual cost of carrying extra safety stock to avoid it.
- Multi-Item Working Capital Prioritizer Rank two or three safety-stock investments by stockout cost avoided per dollar of capital, then allocate a fixed budget across them.
- Order Frequency Comparator Compares two order-frequency options on total annual cost, ordering plus holding, so consolidating into fewer larger orders is not assumed cheaper.
Maintenance (6)
- Preventive Maintenance Interval Planner Compare a current and proposed PM interval on total annual cost, not failure count alone.
- Repair vs Replace Equipment Compare the equivalent annual cost of repairing versus replacing a piece of equipment.
- Reliability Improvement ROI Test whether a reliability investment pays back within its useful life from downtime and maintenance savings.
- PM vs Run-to-Failure Comparator Compare a PM program against running the asset to failure on total annualized cost, pricing an unplanned-downtime premium over planned PM downtime.
Warehouse (11)
- Warehouse Expansion Decision Weigh added warehouse space against your growth rate and current capacity.
- Warehouse Throughput Bottleneck Find which step in your warehouse flow is the real constraint and the throughput gain from relieving it.
- Warehouse Capacity Planner Turn storage locations, units per location, and a growth rate into current utilization and the year a practical capacity ceiling is crossed.
- Rack Type Capacity Comparator Compare two rack types on cost per unit actually stored, not raw density, once each is checked against a required capacity.
Freight (10)
- Cartons per Pallet Optimizer Calculate how many cartons fit per pallet layer and total, checking both carton orientations and the pallet weight limit.
- Unit Load Cost Optimizer Compare two pallet configurations on total shipment cost, once partial-pallet rounding and each configuration's material and handling cost are applied.
- LTL vs FTL Decision Compare LTL and FTL freight cost against your service requirement to pick a mode.
- Mode Cost Comparator Compare standard and expedited freight cost once the cost of arriving late is priced in.
Costing (4)
- Cost per Unit Decision Model Roll up labor, quality, and freight cost into a full per-unit cost with a target check.
- Contribution Margin per Constraint Hour Rank two products by contribution margin per minute of your bottleneck resource.
- Operational Break Even Comparator Compares two cost structures on profit at your actual volume, not contribution margin alone.
- Landed Cost Planner True landed cost per unit with duty calculated on cost plus freight, not cost alone.
Improvement (6)
- Automation ROI Planner Test whether an automation investment pays back against labor, quality, and maintenance savings.
- Constraint Improvement Value Values an hour freed on your bottleneck at its real contribution rate and gates the project on payback.
- SMED Changeover ROI Annualizes changeover-time savings into recovered capacity and dollar value, gated on payback.
- OEE Loss Prioritizer Ranks availability, performance, and quality loss by real dollar value using the correct OEE waterfall.
Sourcing (3)
- Make vs Buy Decision Compare fully loaded make cost, including constraint opportunity cost, against a supplier buy price.
- Automation vs Labor Comparator Compares automating against continuing with labor on total annual cost, including the annualized capital cost, not just automation's lower per-unit operating cost.
- Outsource vs Expand Capacity Compares outsourcing against expanding in-house capacity on total annual cost, including the expansion's annualized capital cost, not just its lower per-unit operating cost.
Quality (4)
- Scrap Cost Decision Prices annual scrap and rework cost from defect rate, volume, and unit cost.
- Cost of Poor Quality Expand scrap cost into the full Prevention-Appraisal-Failure total and price a target defect-rate improvement.
- Defect Reduction ROI Prices the ROI and payback period of a defect-reduction improvement program.
- Quality Gate Placement Comparator Compare inspecting early versus late in a process on total quality cost, once the downstream cost of a late-caught defect is priced in, not…
Demand (5)
- Rush Order Acceptance Decide whether to accept, accept with overtime, or decline a rush order based on schedule slack and risk-adjusted margin.
- Peak Demand Staffing Stress Test Checks whether a peak-demand staffing gap can actually be closed in time, not just whether the headcount looks fixable.
- Seasonality Capacity Planner Decides between flexing up temporary capacity for a peak season or building fixed capacity year-round, on total annual cost.
- Demand Scenario Comparator Stress-tests one capacity level against two demand scenarios at once, so a plan that covers the expected case doesn't hide a breach under the…
Material Handling (5)
- Forklift Fleet Sizing Sizes a forklift fleet against a realistic utilization target, not a 100%-wrench-time assumption.
- Conveyor Capacity Planner Calculates real conveyor throughput using unit length plus minimum gap as the true spacing.
- Manual vs Conveyor Decision Compares manual handling labor cost against conveyor cost with capital properly annualized over its useful life.
- Milk Run Frequency Planner Calculates real average line-side inventory using the sawtooth time-average, half the run capacity.
Energy (5)
- Lighting Retrofit ROI Calculates lighting retrofit payback including avoided maintenance savings, not energy cost alone.
- Energy Efficiency Project Prioritizer Prioritizes energy-efficiency projects by real dollar savings among those that clear your payback target.
- Peak Demand Charge Planner Calculates real demand-charge savings from load-shifting, accounting for the utility ratchet clause.
- Generator Sizing for Operations Sizes a backup generator to cover motor starting surge, not just steady-state running load.
Built for real decisions
Decision quality
Each tool returns more than a number when the problem supports a real choice. Expect a recommendation where one is justified, tradeoffs, assumptions, and the next useful decision in your workflow.
Connected, not isolated
Engines are linked by a versioned Decision Graph, not published as forty independent calculators. A result from one decision can carry into the next connected engine, so the system gets more useful the more of it you use.
Transparent math
Every formula, assumption, limitation, and source is visible on the page. Test vectors validate each engine before publication, and a generic rule of thumb is shown only as a supplementary check next to the rigorous result, never as the answer.
Local-first
No account required. Reusable operating values (like your labor cost or shift pattern) stay in your browser and can autofill compatible engines later. Scenario results can be shared through a link. Nothing sensitive leaves your device automatically.