Mongoose Labs / The free utility shelf
Small tools.
Real progress.
The calculator or document you need, without an account, a form gate, or a detour. Use it now, then get back to the work that matters.
01 / Quick answers
Calculate with confidence.
Every calculator shows its formula and a worked example. Change any input and see the answer instantly.
40 calculators across 9 categories
Sales
5 toolsCommission calculator
Calculate commission from a sale amount, a rate, and an optional base payment.
Revenue split calculator
Divide an amount between two parties using a stated percentage.
Sales target calculator
Find the sales volume needed to reach a commission earnings goal.
Average order value calculator
Calculate average revenue per order for a chosen period.
Marketplace fee calculator
See a seller's proceeds after a marketplace fee you enter, with an optional fixed fee.
Pricing
5 toolsProfit margin calculator
See gross profit and the percentage of revenue left after your stated cost.
Markup calculator
Measure how much a selling price exceeds its cost, as a percentage of cost.
Target margin price calculator
Find a selling price that yields your target gross margin on stated cost.
Contribution margin calculator
See how much a unit sale contributes after its variable cost.
Wholesale price calculator
Set a wholesale price from unit cost and a target gross margin.
Freelance
6 toolsHourly rate calculator
Turn an annual income target and business overhead into a billable hourly rate.
Retainer price calculator
Price a monthly block of work using hours, an hourly rate, and overhead.
Utilization rate calculator
See what percentage of available work hours were billable.
Project quote calculator
Estimate a project price from hours, rate, expenses, and a contingency allowance.
Effective hourly rate calculator
See the actual hourly earnings from a fixed project fee and all hours spent.
Milestone payment calculator
Split a project fee into a deposit, a middle payment and a final balance.
Marketing
7 toolsConversion rate calculator
Turn visitors and completed actions into a conversion percentage.
Acquisition cost calculator
Estimate marketing spend per acquired customer for one period.
Click-through rate calculator
Measure clicks as a percentage of impressions.
Cost per click calculator
Calculate campaign spend per click using the numbers you enter.
Customer churn calculator
Measure customers lost during a period against customers at its start.
CPM calculator
Find campaign cost for every thousand impressions.
Lead-to-sale rate calculator
Measure the share of leads that became sales in the same cohort.
Operations
5 toolsInventory turnover calculator
Compare cost of goods sold with average inventory value over one period.
Days of stock calculator
Estimate how long current units will last at an average daily usage rate.
Sell-through rate calculator
Measure units sold as a share of units available during a period.
Production yield calculator
Measure usable output from total units produced.
Dimensional weight calculator
Estimate shipping dimensional weight from package dimensions and your carrier's divisor.
Creators
3 toolsCreator royalty split calculator
Divide royalty proceeds between a creator and collaborators using an agreed percentage.
Sponsorship rate calculator
Measure sponsored income per thousand views and against production cost.
Print resolution calculator
Check the print resolution of an image at a chosen physical width.
Planning
3 toolsShopping
2 toolsEveryday
4 toolsPercentage change calculator
Compare an old number with a new number to see the increase or decrease.
Tip split calculator
Split a bill and percentage tip equally among a group.
Fuel trip cost calculator
Estimate fuel needed and cost for a trip using metric distance and consumption.
Savings goal calculator
Divide the remaining amount of a stated goal across a chosen number of months.
02 / Printable work
Make it official-looking.
Enter your details, inspect the page, then choose Print / Save as PDF. Nothing is uploaded.
Invoice maker
Make a clean invoice with line items and save it as a PDF using your browser.
Estimate maker
Present a clear quote before work begins and save a printable PDF.
Receipt maker
Create a record of a payment you have received. Payment is not verified by Mongoose.
Packing slip maker
Prepare a simple list of items included in a shipment, ready to print.
Meeting notes maker
Turn a meeting into a clear record of attendees, decisions, and next actions.
A little help from the family
Need more than a calculator?
Mongoose Labs also builds full workspaces for stores, relationships, creative work, and operations. These free tools stand on their own; the larger products are there when you need them.
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