Live spreadsheet models · Reviewed and sourced
Calculators you can cite.
Hundreds of calculators in 33 categories. Every result is computed live by a reviewed spreadsheet model, with the methodology and sources on the page and a stable URL to cite.
Directory
Explore by field
Choose a category to see every calculator in it.
Personal Finance
92calculators in 12 categories
Engineering
86calculators in 11 categories
Finance & Business
60calculators in 6 categories
12calculators
6calculators
5calculators
Starting points
Good places to start
A curated selection across the fields, not a ranking.
| Number | Calculator | Category |
|---|---|---|
| 1 | Mortgage Payment PITI Calculator | Housing And Mortgages |
| 2 | Compound Interest Growth Calculator | Saving and Investing |
| 3 | Take Home Pay Paycheck Calculator | Budgeting And Cash Flow |
| 4 | Concrete Volume and Bags | Construction |
| 5 | Voltage Drop Calculator | Electrical |
| 6 | Monte Carlo Retirement Success Calculator | Retirement Planning |
| 7 | Beam Deflection Calculator | Structural & Civil |
| 8 | Process Capability Calculator | Quality & Six Sigma |
Release notes
Just shipped
The calculators added with our two latest releases, newest first.
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Published This Week
Latest publications58 published calculators
- New Base Plate Anchor Rod Calculator Structural & Civil
- New Basement Material Estimator Construction
- New Beam Analysis Calculator Structural & Civil
- New Bond Ladder Builder Calculator Income Investing
- New Bundle Pricing & Product Mix Optimizer Pricing & Profitability
- New Capital Gains Tax on Investment Sales Calculator Tax Planning
- New CD and Treasury Ladder Comparison Calculator Income Investing
- New Ceiling Fan Replacement Calculator Home And Transportation Savings
- New Central AC Replacement Calculator Home And Transportation Savings
- New Channel & Marketplace Profitability Calculator Pricing & Profitability
-
Published Last Week
3 published calculators
Canvas calculators
Draw it, then calculate
30 calculators open a drawing canvas. Sketch the plan to scale, and the measured lengths and areas go straight into the reviewed model.
- 1Draw the outline on a scaled grid.
- 2Adjust lengths and openings until the plan matches.
- 3Calculate. The reviewed model returns the quantities.
Try a canvas calculator
Tutorials
Watch how it works
Short walkthroughs that take a calculator from first input to result.
Video walkthrough, 4 minutes 40 seconds:
Roof Area From Plan Calculator
Construction
Video walkthrough, 3 minutes 58 seconds:
Flooring Tile Calculator
Construction
Video walkthrough, 4 minutes 6 seconds:
Fence Calculator
Construction
Video walkthrough, 4 minutes 6 seconds:
Paver Patio Calculator
Construction
Video walkthrough, 4 minutes 15 seconds:
Paint Drywall Calculator
Construction
Video walkthrough, 3 minutes 15 seconds:
Area Calculator
Construction