Free Tools
Tools for People Who Bill by the Hour
Free to use. The calculators work right in the page; invoices and estimates you make are saved to a free per.hr account.
Free Invoice Generator
Add your details, your client's, line items and tax, and download a PDF invoice in minutes.
Free Estimate Generator
Put together an estimate with scope, terms, an optional deposit and a line for your client to sign.
Time Card Calculator
Add up a week from start and end times, minus breaks, in hours and minutes and in decimal hours.
Hourly Rate Calculator
Work out what to charge per hour from the income you want, your costs and the hours you can bill.
Overtime Calculator
Regular and overtime pay for a week, at time and a half or any rate you set.
Day Rate Calculator
Turn an hourly rate into a day, week and month rate, or a day rate back into hourly.
Late Fee Calculator
What a late invoice owes with a flat fee, a monthly percentage or yearly interest.
Minutes to Decimal Hours
Turn hours and minutes into decimal hours for an invoice or timesheet, and back again, with a chart.
Salary to Hourly Calculator
What a salary works out to per hour, week and month, or an hourly rate as a yearly salary.
Markup and Margin Calculator
Margin and markup between what you pay a contractor and what you bill, or the bill rate for a margin.
Billable Utilization Calculator
The share of your hours that's billable, what it earns, and the gap to your target.
Retainer Calculator
Price a monthly retainer from the hours it covers, your rate and an optional discount.
Want the hours tracked and invoiced for you? Start free with per.hr.