Denumb started as a personal spreadsheet habit. A freelance cinematographer running the same maths between jobs: rates, margins, VAT, overtime. Eventually it made more sense to build it properly.
As a freelance cinematographer, most of my work is on film and TV sets: long days, shifting schedules, overtime. Between jobs, there's invoicing, scheduling, negotiations, taxes, maintenance.
The math isn't hard, but doing it quickly, confidently, without second-guessing is important. I used whatever I could find: online calculators, notes on my phone, spreadsheets, the same calculation written down and done again from scratch. Nothing was ever in the same place twice.
So I built it. Started with the overtime calculator. Then the hourly rate tool. Then VAT. At some point it stopped being a personal project and started feeling like something worth sharing.
That's Denumb. Just tools I actually use, made for anyone doing similar work.
"The creative work is the job.
The numbers are just
part of running it."
Most finance tools are designed for accountants or built around a software subscription. Finding the actual calculator under the ads and popups takes longer than just doing the maths yourself.
Generic tools don't know about overtime schedules, day rates, or the difference between a Film/TV turnaround and a standard 9-to-5. They're built for a median user that isn't you.
You just need a number. You don't want an account, a trial period, or a drip email campaign about "unlocking your financial potential." You want to open a tab, type a number, and get an answer.
Every decision on Denumb comes back to the same question: does this help someone get their answer faster? That's the filter everything gets put through before it ships.
The core tools are free to use and always will be. The calculators work in your currency, in your locale, with your rates. No configuration required before you get a result.
If a tool ships on Denumb, it's one that's been used and tested against real numbers. Consistency over cleverness, every time.
The tool that started it all. Custom schedules, hourly or daily. Works out total shift pay by tier.
Turn your income target into a day rate that actually covers your costs. Know your number before the conversation.
Add or remove VAT from any price. Auto-detects your country's rate. Works anywhere.
Monthly repayments, total interest, and full amortisation. Useful when the work is good and you're thinking bigger.
Metres, feet, inches, millimetres. Convert between any length units without hunting for the formula.
Kilograms, pounds, stone, grams. Fast unit conversion with no clutter.
Strong, random passwords generated instantly. Set the length and complexity, copy and go.
Set a range, get a number. Useful for draws, decisions, and everything in between.
All the tools are free, open, and ready. No account. No download. Just pick the calculator you need and go.
Browse all tools →No account. No email required.
Denumb started as a personal spreadsheet habit. A freelance cinematographer running the same maths between jobs: rates, margins, VAT, overtime. Eventually it made more sense to build it properly.
As a freelance cinematographer, most of my work is on film and TV sets: long days, shifting schedules, overtime. Between jobs, there's invoicing, day rates to quote, VAT to add or strip back depending on who's asking.
The maths isn't hard. But doing it quickly, confidently, without second-guessing — that part mattered. I used whatever I could find: online calculators, notes on my phone, the same calculation written down and done again from scratch. Nothing was ever in the same place twice.
So I built it. Started with the overtime calculator. Then the hourly rate tool. Then VAT. At some point it stopped being a personal project and started feeling like something worth sharing.
That's Denumb. Just tools I actually use, made for anyone doing similar work.
"The creative work is the job.
The numbers are just
part of running it."
Most finance tools are designed for accountants or built around a software subscription. Finding the actual calculator under the ads and popups takes longer than just doing the maths yourself.
Generic tools don't know about overtime schedules, day rates, or the difference between a Film/TV turnaround and a standard 9-to-5. They're built for a median user that isn't you.
You just need a number. You don't want an account, a trial period, or a drip email campaign about "unlocking your financial potential." You want to open a tab, type a number, and get an answer.
Every decision on Denumb comes back to the same question: does this help someone get their answer faster? If not, it doesn't ship.
No accounts because accounts create friction. No paywalls because the useful stuff should be free. No ads because they make tools worse. The calculators work in your currency, in your locale, with your rates.
If a tool ships on Denumb, it's one I've used myself. That's the only filter that's ever mattered.
The tool that started it all. Film/TV, CA daily, UK and custom schedules. Works out total shift pay by tier.
Turn your income target into a day rate that actually covers your costs. Know your number before the conversation.
Add or remove VAT from any price. Auto-detects your country's rate. Works anywhere.
Monthly repayments, total interest, and full amortisation. Useful when the work is good and you're thinking bigger.
Metres, feet, inches, millimetres. Convert between any length units without hunting for the formula.
Kilograms, pounds, stone, grams. Fast unit conversion with no clutter.
Strong, random passwords generated instantly. Set the length and complexity, copy and go.
Set a range, get a number. Useful for draws, decisions, and everything in between.
All the tools are free, open, and ready. No account. No download. Just pick the calculator you need and go.
Browse all tools →No account. No email required.