OneTaskFree Business and Freelance Calculators
Freelance Rates, Stripe and PayPal Fees, Break-Even and Runway Calculators
The arithmetic that decides whether a business is actually profitable rarely happens in an accounting package. It happens on the back of an envelope while you are quoting a job, setting a rate, or working out what a payment processor left you with. These pages do that arithmetic properly, grouped by the decision you are trying to make.
Search results
No tool matches that. Try a shorter word.
Rates & Pricing 6
Day rates, blended rates, utilisation, overheads, retainers, milestones and meeting cost.
Blended Rate Calculator
One weighted hourly rate across a mixed team of roles.
Freelance Time-Off Surcharge
The rate uplift that pays for your unpaid time off.
Meeting Cost Ticker
Watch what a meeting costs while it is happening.
Milestone Payment Splitter
Split a project fee into deposit and milestone amounts.
Overhead Rate Calculator
Annual overhead spread across the hours you can actually bill.
Retainer Overage Calculator
What to invoice when a retainer runs over its included hours.
Profit & Growth 6
Break-even, margin, revenue, ROAS, EBITDA, churn, LTV, CAC, MRR and runway.
Break-Even Calculator
Units and revenue needed to cover fixed costs, and to hit a profit target.
Break-Even ROAS Calculator
The ROAS multiple at which an ad campaign stops losing money.
Free Shipping Threshold Calculator
The order value at which free shipping still makes money.
Rent Per Square Foot Calculator
Convert commercial rent into cost per square foot and per person.
Runway Calculator
Months of cash left from balance, burn and revenue growth.
Wholesale Price Calculator
Wholesale price and recommended retail price from cost and margins.
Invoicing & Payments 3
Invoice generator, due dates, late-payment interest, Stripe and PayPal fees.
Guides for common jobs
- Name and brand a new business — Eight free tools that take a business from no name to a first invoice.
How the business tools are organised
Rates & Pricing is for the moment before the work starts. A freelance day rate built up from the income you need and the days you can actually bill; a blended rate across a team; an overhead rate that tells you what an hour really costs; surcharges, retainers, milestone splits and the price of a meeting. Every one of these starts from the same question — what do I have to charge for this to work? — and shows the working.
Profit & Growth is for judging whether the numbers hold once the work is under way. Break-even in units and in advertising spend, the difference between margin and markup, stacked discounts, a free-shipping threshold, lease cost per square foot, and the SaaS set: customer lifetime value, acquisition cost, MRR to ARR, runway and a subscription spend audit.
Invoicing & Payments covers getting paid. An invoice generator that produces a clean PDF, a due-date calculator for net terms, statutory late-payment interest, and fee calculators for Stripe and PayPal that answer the question people most often get wrong: how much do I need to charge so that the amount I want actually arrives?
Why the working is always shown
A calculator that gives you a number without the formula is a calculator you cannot argue with — and in business you usually need to. Each page here states the convention it uses (margin on price, markup on cost, interest simple or compound) and lays out the intermediate steps so you can carry them into a quote, a spreadsheet or a conversation with an accountant.
Nothing you type is transmitted
Rates, revenue and payroll figures are exactly the numbers you do not want in someone else's logs. Every tool in this section runs entirely in your browser: nothing is sent to a server, nothing is stored, and the pages keep working if your connection drops once they have loaded.
FAQ
Are my financial figures sent to a server?
No. Every calculator on this site runs entirely in your browser using JavaScript that ships with the page. Revenue, costs, rates and client figures never leave your device, are never logged, and are discarded when you close the tab.
Why does adding the processor's fee back on top come up short?
Because the fee is charged on the final amount, not the original. If you add 2.9% to $100 you get $102.90, but the fee on $102.90 is $2.98, so you land short. The correct method divides by one minus the rate after subtracting the fixed fee, which the fee calculators do for you.
Should I use margin or markup when pricing?
Price using markup, because it starts from the cost you actually know, but report and target margin, because that is what percentage of revenue you keep. A 50% margin requires a 100% markup, so stating one and applying the other is the most common and most expensive pricing error.
Do the tools work offline?
Yes, once the page has loaded. The logic is part of the page rather than a call to an API, so calculations keep working if your connection drops. Only the initial load needs a network.
Explore other categories
Calculators
Everyday maths, loans, dates, health and DIY. Nothing uploaded.
94 tools
Converters
Units, images, audio, video, documents and code formats, converted in your browser.
63 tools
Text
Writing, lists, Markdown, HTML, Morse and ciphers.
23 tools
Developer
Regex, cron, formatters, JSON, YAML, Base64, hashing, JWT and SEO. All client-side.
48 tools
Design
Layouts, effects, shapes, components, forms and colour. Live preview.
78 tools
Media
Images, audio, video, screen and PDFs. Nothing leaves your browser.
174 tools
Names
Random names for people, fantasy races, sci-fi worlds and RPG characters.
389 tools
Data
Sourced, dated reference tables you can search, cite and download.
9 tools
Money
Pay, bills and property calculators that show their working.
14 tools
Time
Calendar lookups, date arithmetic and live countdowns to the days that matter.
18 tools
Maths
Fractions, primes, algebra and statistics, with the working shown.
12 tools
Science
Physics, chemistry and electronics calculators, with the formula shown.
4 tools
Word Games
Scrabble, Wordle, anagrams, crosswords and rhymes, solved.
4 tools