Free tools that answer the money questions.
What to charge, what a job really makes, what late payers and no-shows cost, and a professional invoice in three minutes. No sign-up, and nothing leaves your browser.
Calculators for the numbers that decide a year.
Each one starts on a worked example you can overwrite with your own figures.
- 2 minHourly rate calculatorThe rate that covers your pay, your overheads and your unbillable time.Use the tool
- 1 minProfit margin and markup calculatorPrice from a cost at the margin you want, or check a price you charge.Use the tool
- 2 minLate payment cost calculatorThe cash tied up in overdue invoices, what it costs, and a fair late fee.Use the tool
- 3 minAdmin time cost calculatorThe hours lost to retyping, chasing and searching, and their yearly cost.Use the tool
- 2 minSoftware stack cost calculatorThe apps you pay for today, compared with one grewray plan.Use the tool
- 2 minBreak-even calculatorThe jobs a month that cover your fixed costs, and what each one after adds.Use the tool
- 2 minNo-show cost calculatorWhat missed appointments cost a year, and what cutting them is worth.Use the tool
- 2 minMembership churn calculatorHow churn shapes revenue, member lifetime and where you land in a year.Use the tool
Why these are free.
Because a business that knows its numbers is the kind that outgrows spreadsheets. When you do, grewray keeps these numbers current on every job.
Private by design
Every tool runs in your browser. Nothing you type is sent to us or kept anywhere.
The formula, in full
Each tool prints its arithmetic and a worked example, so you can check every figure.
Free, with no catch
No sign-up, no email gate, no watermark on the invoice. Use them as often as you like.