Know your real numbers before they cost you.
TallyCrunch turns messy fees, rates, and margins into one clear number you can act on — for e-commerce sellers, finance shoppers, and freelancers.
No email gate · Calculations stay in your browser · Built for speed
Popular calculators
High-intent tools where the right number changes the decision.
Shopify Fee Calculator
Your real profit after every Shopify fee.
Open calculatorAmazon FBA Profit Calculator
Margin and ROI after FBA + referral fees.
Open calculatorMortgage Calculator
Monthly payment, interest, and amortization.
Open calculatorLoan Payoff Calculator
Payoff time and interest saved with extra payments.
Open calculatorFreelance Rate Calculator
The hourly rate your income goal really needs.
Open calculatorInstant, as you type
No “calculate” button, no waiting. Every keystroke updates the result and the full breakdown in real time.
Private by design
No sign-up, no email gate. Your numbers never leave your browser — calculations run entirely on your device.
Built for decisions
Not just an answer — a line-by-line breakdown plus a plain-English guide on how the number is built and how to improve it.
From the blog
All postsShould you pay off debt or invest? A simple framework
It comes down to comparing a guaranteed return against an uncertain one — plus a couple of rules that keep you out of trouble. Here is how to decide.
Read articleAmazon FBA vs FBM: which is actually more profitable?
Fulfillment by Amazon buys you convenience and the Buy Box edge — at a cost. Here is how to decide which model keeps more profit for your products.
Read articleThe true cost of selling on Shopify (beyond the monthly plan)
Your Shopify bill is the small part. The fees that actually decide your profit are charged on every single order — here is the full picture.
Read article