Free calculators
Owners ask these 11 questions all the time, and each is answered in about ten seconds. Nothing to set up and nothing to save. Type your numbers, read the answer, close the tab.Want KANJIN to remember your figures? Open the Back office. It is also free.
What is this costing me?
The arithmetic behind a decision you are about to make, or one you already made.
- Restaurant Break-Even CalculatorHow many customers you need each day before your shop starts making money.
- Discount ROI CalculatorWhat a discount really costs you, next to giving a few free visits to local creators.
- Loyalty Card Calculator: How Many Stamps?What your loyalty card really costs you, and how long it should be.
- Booth Rent vs Commission CalculatorWhat one chair leaves you, and them, under rent, commission or a wage.
What is a customer worth?
The number every argument about keeping customers needs and almost nobody has.
- Customer Lifetime Value Calculator for Small ShopsWhat a regular leaves behind in a month, a year, and before they drift away.
- Email Marketing ROI Calculator for Small ShopsThe visits your email actually caused, after taking out the ones you were getting anyway.
- Google Review CalculatorHow many 5-star reviews you need to reach the rating you want.
What should I charge, and how many can I serve?
Menu, prices and the ceiling on a day.
Something to print
No formula in these. They take a name or a link and give you something for the counter.
Where these fit
- 01Free
Know the number
Five calculators. Each one answers one question. No account, no email, and nothing you type leaves your browser.
You are here
- 02Free, with an account
Keep your numbers
A free account. Enter your costs once and the back office answers for your shop. Your figures are saved on your own device. Point it at a folder and they follow you from the counter to home.
Open the back office
- 03$39 a month per location
Grow
KANJIN emails your regulars on quiet days, finds local creators to invite, and asks customers for Google reviews. This is the step that changes the numbers.
See how it works
Fill your quiet days without cutting prices
A discount cuts the price for everyone who would have paid anyway. KANJIN emails your regulars only on the days you need them, and finds local creators you can invite.
- Calculators need no account
- The back office is free
- Cancel any time