Paint Calculator
Find out how much paint you need for a room, wall or ceiling.
Why Piltoe
Small tools.
Real jobs.
Each utility does one job well: convert, count, calculate, clean. The interface stays quiet so the work is obvious.
Available now
Tools you can use
Simple tools for getting everyday jobs done.
Height Calculator
Estimate a child’s adult height from parent heights, in feet, inches, and centimeters.
Texas Paycheck Calculator
Estimate Texas take-home pay after federal taxes, FICA, and payroll deductions.
401(k) Calculator
Estimate how your 401(k) could grow with your contributions, employer match, salary growth, returns, and fees.
Factor Calculator
Find number factors, factor pairs, prime factorization, and factor common algebraic expressions.
Margin Calculator
Calculate profit margin, markup, profit, or a selling price for your target margin.
Slope Calculator
Find a line’s slope, equation, angle, grade, and graph from the information you have.
Volume Calculator
Calculate volume for boxes, cylinders, spheres, cones, cubes, and more with useful unit conversions.
CD Calculator
Estimate your CD balance at maturity and the interest you could earn.
Roth IRA Calculator
See if your Roth IRA is on track, and what a higher contribution could do.
How it works
Find it. Use it. Done.
Just useful tools — open the page, finish the job.
01
Find it.
Search or browse. Pick the job you need done.
02
Use it.
Open the page and work in the browser. No extra software to install.
03
Done.
Copy, download, or leave with the answer. Then get on with your day.
Free to use
Useful tools should be easy to reach.
Piltoe keeps its tools free.
Advertising helps support the site so we can keep making them.
A catalog that grows one job at a time
Piltoe is an independent website of simple tools for everyday problems. The pages are meant to stay quiet: one-job utilities you can use without installing software.
As the catalog grows, each tool stays part of the same product — same layout, same tone, free to use. Read About Piltoe for the thinking behind it, or see the full tools list.