Tool directory
All free tools
17 calculators for the numbers that quietly move your margin. Each one takes under a minute, and one email unlocks all of them. USD only for now.
Want the formulas behind the numbers? Read the guides
Ads & profit
- Ads & profit
Ad Profit Leak Score
How much of your Google Ads spend is actually profitable, banded 0–100.
- Ads & profit
Customer Acquisition Cost Payback Calculator
How many orders it takes to pay back what you spent acquiring a customer.
- Ads & profit
AOV Uplift Calculator
The extra monthly revenue and profit from raising your average order value.
- Ads & profit
Discount Code Profit Impact Calculator
Your real margin after a discount code, and the volume needed to break even.
- Ads & profit
Free Shipping Threshold Calculator
Whether offering free shipping over a certain order value actually pays off.
- Ads & profit
Product Bundle Discount Calculator
Your real profit on a bundle after the discount, and what you give up per bundle.
Inventory
- Inventory
Dead Stock Carrying Cost Calculator
What stock unsold 90+ days is actually costing you every month.
- Inventory
Stockout Revenue Loss Estimator
The revenue and profit a stockout costs you, based on normal daily sales.
- Inventory
Cash Tied Up in Inventory Calculator
How many days your cash sits as inventory before it becomes cash again.
- Inventory
Reorder Point Calculator
The exact stock level that should trigger your next reorder.
- Inventory
Safety Stock Calculator
How much buffer stock you need to cover demand and lead-time swings.
- Inventory
Contribution Margin per SKU Calculator
What a single SKU actually contributes after COGS, shipping, and fees.
- Inventory
Inventory Turnover Rate Calculator
How many times a year your inventory turns over, and how many days that takes.
- Inventory
Economic Order Quantity (EOQ) Calculator
The order size that minimizes your combined ordering and holding costs.
- Inventory
Multi-Location Inventory Imbalance Estimator
Which of two locations is overstocked or understocked, and how many units to move.
- Inventory
Seasonal Lead-Time Buffer Calculator
The extra stock you need to survive peak-season demand and slower lead times.