Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!


Engineering economics - cash flow diagrams, present value, discount rates, internal rates of return - IRR, income taxes, inflation

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Accounting Rate of Return

Net Income to Net Investment

Bid - Work Flow Template

A bid work flow template - Online with Google Docs

Cash Flow Diagrams

Value of money in the future

Compound Interest Tables

Compound interest tables - Interests ranging 0.25 - 60%

Discount Rates

Single and multiple discounts

Discrete Compounding Formulas

Compounding formulas for discrete payments

Income Taxes

Taxable income and income taxes

Inflation Rate

Inflation and future value

Interest Formulas

Single cash flow formulas

Interest Rate

Interest is the cost of money

Interest Rates - Effective versus Nominal

Effective vs. nominal interest rates

Internal Rate of Return - IRR

Internal Rate of Return - IRR - the break-even interest rate

Markup and Gross Profit

Profit versus markup

Net Income

The accounting measure of a project

Net Present Worth - NPW - of a Stream of Payments

Net Present Worth - NPW - or Value of a stream of payments

Online Mortgage Payment Calculator

Calculate mortgage payment with Annual Interest Rate, Number of Years and Amount Borrowed

Operating Profit

Generated profit or income

Payback Time

Investments and payback time

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Working with percentages - parts of a whole


An asset providing a fixed cash flow

Present Value

The Present Value of money in the future

Shipping - Cost, Payment Terms and Conditions (TERMS)

FOB, CFR ...

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Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

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About the Engineering ToolBox!


3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

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