Get the task done.
Get on with your day.
Calculate working hours, create professional invoices, check profit margins and work out percentages with BuzBolt's free online business tools. Get instant results and downloadable PDFs, with no account required.
MADE FOR THE SMALL TASKS THAT MATTER
Four useful tools. Nothing to learn first.
Choose a task, enter what you know and leave with something you can use.
Time Calculator
Calculate work hours, subtract breaks and handle overnight shifts. Convert your result to decimal hours.
Free Invoice Generator
Add your logo, customer details and line items. Preview your invoice and download a clean PDF.
Profit Margin Calculator
Enter your cost and selling price to see gross profit, margin and markup instantly.
Percentage Calculator
Find a percentage, compare numbers or calculate an increase or decrease in seconds.
What is BuzBolt?
BuzBolt is a free online toolkit for freelancers, small businesses and anyone who needs a quick calculation or professional invoice. It brings together time, percentage and profit margin calculators with an invoice generator that creates downloadable PDFs. No account or subscription is required.
A SHORTER WAY FROM QUESTION TO ANSWER
Made to be useful.
Not another thing to manage.
Most tasks shouldn’t need a new account, a tutorial or a complicated workflow. Here is how BuzBolt keeps things straightforward.
Open the right tool
Go directly to the calculation or invoice you need.
Make it your own
Enter your own values and see what changes—without starting a project or signing in.
Take the result with you
Copy a calculation or download a PDF you can save, share or print.
THOUGHT THROUGH, DOWN TO THE DETAILS
The small details
make the difference.
Useful tools are more than a tidy answer. They need to handle the situations people actually encounter.
Explore the explanationsShifts don't always end at midnight.
Calculate overnight time and deduct breaks, then convert the result to decimal hours.
Your invoice. Your business.
Use your own logo and client information. The downloaded invoice has no BuzBolt watermark.
Margin and markup aren't the same.
See both side by side, so you can make more informed pricing decisions.
Know what changed.
Compare old and new values and see the percentage change explained clearly.
THE THINKING BEHIND THE ANSWER
An answer is better
when you understand it.
Explore practical guides on calculating working hours, converting minutes to decimal hours, creating invoices, finding profit margins and working out percentage changes. Each guide includes clear methods, formulas and real examples.
Browse all guidesA task off your list.
That feels good.
Choose a free tool, get your result and move on with your day.