“We keep running out of stock.”
Estimate when to reorder from daily usage, supplier lead time and safety stock instead of relying on memory.
FREE TOOLS + PRACTICAL GUIDES
What small-business problem are you trying to fix today?
Start with the problem, not the spreadsheet. Find a focused calculator, checklist or guide for stockouts, food waste, overdue invoices, production bottlenecks, missed routine tasks and job-cost decisions.
No account required • No email required for calculators • Calculator inputs stay in your browser
START WITH THE PROBLEM
Choose what is costing you time, money or attention
Each path starts with a practical answer. You can learn the workflow, use a free tool and decide what to change before buying anything.
“Too much food is ending up in the bin.”
Estimate the purchase-cost impact, then learn how to log the reason so the weekly pattern points to one corrective action.
“Customers are paying late.”
See how long invoices have been outstanding, understand aging buckets and build a simple follow-up routine for unpaid and partially paid invoices.
“Orders are coming in, but production keeps falling behind.”
Estimate what fits into the available production window, then turn orders, batch sizes and bottlenecks into a more realistic schedule.
“Routine tasks keep getting missed between shifts.”
Start with clear opening, closing and handoff checks so the next person knows shortages, issues, prep status and priority actions.
“I am not sure what this job really costs.”
Estimate direct costs, overhead and a planning quote before agreeing to work that looks busy but leaves too little margin.
PRACTICAL GUIDES
Understand why the problem happens — not just the number
Calculators answer “how much?” Guides help answer “what should I do next?”
Track Unpaid Invoices & Partial Payments
Build the minimum fields, balances, next actions and weekly follow-up routine needed to see what is still unpaid.
Read GuideShift Handoff Checklist
Record shortages, prep status, equipment issues and priority actions so the next shift starts with context.
Read GuideRestaurant Food Waste Log
Track item, quantity, reason and estimated cost, then turn repeated patterns into one corrective action.
Read GuideBakery Production Schedule
Translate orders and batch sizes into workload, capacity and a realistic daily production plan.
Read GuideInvoice Aging Explained
Understand current, 1–30, 31–60, 61–90 and 90+ day buckets so follow-up starts with the right invoices first.
Read GuideClient Project Workflow
Connect clients, project spaces, sessions, item decisions and follow-up without rebuilding the process each time.
Read GuideFREE TOOLS
Need a quick answer right now?
Use one focused tool without setting up a full system first.
Inventory Reorder Point Calculator
Estimate when stock should be reordered using daily usage, lead time and safety stock.
Use Free ToolFood Waste Cost Calculator
Estimate daily, weekly and monthly purchase-cost waste.
Use Free ToolInvoice Aging Calculator
See how many days an invoice has been outstanding and which aging bucket it belongs in.
Use Free ToolCoffee Shop Checklist Builder
Create an opening or closing starter checklist by focus area.
Use Free ToolCafe Cleaning Schedule Planner
Estimate weekly cleaning workload from recurring tasks.
Use Free ToolPrivate Chef Job Cost Calculator
Estimate direct job cost, overhead and a planning quote.
Use Free ToolBakery Production Capacity Calculator
Estimate how many units fit into an available production window.
Use Free ToolBoba Ingredient Usage Calculator
Estimate daily and weekly use for a single ingredient.
Use Free ToolWHEN THE WORKFLOW BECOMES RECURRING
A paid system should earn its place
We link a paid product only after it is validated and clearly matches the problem you are trying to solve.
Validated Product
Invoice & Payment Follow-Up Tracker
A 7-tab Excel workflow for small service businesses that need to track invoices, partial payments, remaining balances, aging, promise-to-pay details and the next follow-up action.
It does not send invoices, process payments, sync a bank account or replace accounting software.
Why PoonthaiDigital starts with free tools and useful answers
Small-business owners often need one clear answer before they need another spreadsheet. The goal here is to help you understand the problem, make a practical decision and build a repeatable workflow only when it is worth the extra setup.
No account gateUse the calculators without creating an account.
Browser-first inputsCalculator values are processed in your browser; they are not included in analytics events.
No forced upgradeA paid product is linked only when it has been validated and matches the workflow.
Browse by workflow
Restaurant and cafe operators can connect daily operations, inventory, waste and cleaning tools. Boba shops can connect ingredient usage with reorder planning, and bakeries can combine production capacity with inventory planning.