Inventory, phases and future purchase balances.
Keep dated receipts, available stock, product compatibility and work phases explicit.
Choose the matching calculation
Phased Material Pack Order Calculator
Compare buying packs for separate work phases with pooling identical material for the whole project.
Delivered Quantity Reconciliation Calculator
Compare supplied ordered, invoiced and measured delivered quantities on the same basis.
Contingency Budget Ledger Calculator
Track a separately specified contingency reserve after approved deductions and returned credits.
Single versus Phased Order Storage Calculator
Compare one early delivery with deliveries at each entered demand date, using quoted delivery and holding costs.
Supplied Inventory Reorder Projection Calculator
Calculate lead-time consumption and a trigger quantity from your chosen demand rate, lead time and reserve.
Scheduled Maintenance Cost Comparison Calculator
Compare upfront quotes and explicitly scheduled maintenance over a chosen horizon.
Milestone Payment Budget Calculator
Track an entered advance and staged payment shares separately from retained amounts.
Stock Expiry Allocation Calculator
Exclude out-of-date batches before assigning compatible stock to a planned phase.
Material Stock Movement Ledger Calculator
Reconcile ordered stock receipts and usage rather than checking only a final total.
Reusable versus Consumable Cycle Cost Calculator
Count replacements and per-use cleaning when comparing reusable material with single-use purchases.
Measure and check your assumptions
Keep earlier reserve deficits visible after later credits
Can a positive ending contingency balance hide an earlier funding gap?
Compare storage cost with the cost of additional deliveries
When can one delivery cost more than several timed deliveries?
Separate quoted lead-time use from a selected stock reserve
Which part of a reorder trigger is calculated and which part is your assumption?
Separate ordered, delivered and used concrete quantities
Which quantity should be compared with a supplier invoice?
State whether maintenance at the exact comparison horizon is included
Does an event scheduled at year ten belong in a ten-year comparison?
Keep milestone percentages on one agreed budget basis
Are progress shares percentages of the whole budget or of the remaining balance?
Filter a batch’s stated use date before counting stock as available
Can the full stock total cover a phase if some batches are not eligible on its use date?
A positive closing stock balance can hide an earlier shortage
Was enough stock present at every point in the work sequence?
Include replacement units when comparing repeated-use purchases
Will one purchase of reusable units last the full supplied work horizon?
Reconcile order, invoice and measured delivery on one basis
What must be normalised before comparing an invoice with a measured delivery?
State whether the starting day is included in lead time
Why can two working days after Friday become five calendar days?
When to pool packs across work phases
Should you round each work phase separately or combine an order?
Keep the estimate within scope
Use your measured geometry and already supplied product specifications. Counts and quantities do not select a construction system or establish code compliance.
Collect chosen results in a free browser material project. Alternative scenarios remain separate orders.