Calculators

How Much Gas Can You Save by Rolling Through Stop Signs? Not as Much as You Might Think.

The energy it takes to accelerate or decelerate is dependent on how fast you are going. It takes a lot more energy to change your speed by say, 10 mph, when you are going fast rather than when you are going slow. A 70-80 mph acceleration takes a lot more energy than a 40-50 mph …

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Is your Side Gig Worth It?: Time to Retirement Calculator

Time to Retirement Calculator with and without a side gig (assuming you are starting from scratch) I am going to define “retirement” as hitting your “number,” which I will define as being a savings of 30 times your annual spending. Maybe this is obvious, but the lower your savings rate, the bigger the influence your …

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Should You Wash Your Clothes in Cold Water?

Probably only consider it if you have a capable detergent I just listened to Malcolm Gladwell’s “Revisionist History” episode where he shames himself and his colleagues for not saving energy by washing laundry in cold water. He talks to Proctor and Gamble researchers who have been developing detergents that function in cold water. They get …

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Shower Head Savings Calculator: Definitely Get Low-Flow Shower Heads

One of the first things we did to our new house was put in low flow (1.5 GPM) shower heads. This is a simple and significant change. See what changing shower heads could save YOU: Too much info on how the calculator works: The calculator is basically just using the “MCAT ” equation for heat …

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Instant Water Heater or Insulation Wrap? Insulation Wrap Savings Calculator!

Option A for most energy savings: Instant Water Heater Heat is always conducted through the walls of your water heater and getting wasted. The BEST way to save the most and reduce the most heat waste is to get an instant water heater, but you may find that the best situation for you is just …

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Calculate the Cost of a Purchase Now to Your Retirement-Aged Self

When you consider making a purchase today, think about what you might make if you invest that money rather than spend it. Actually, you don’t have to think much, you can just plug your values into my form here. You can modify any field, including the percent rate of return, if you expect you might …

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Heat Cost Calculator: How Hard is it to Heat a Garage, Shed, Workshop, or Bigger House?

If you are contemplating living in a garage during the winter, or heating an uninsulated outbuilding or workshop, maybe rethink that. You are 22 years old. You have seen that stock market returns average 6.5% annually after inflation, and that any money you save and invest today will be worth ten times more by the …

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How Does Inflation Affect Your FIRE Plans? Make Your Own Personal Inflation Index

Are you more affected by inflation than the average person? There seem to be too many inflation indexes out there to keep track of. There are the PCE, core PCE (does not include food and energy), and CPI all making the news, making it confusing when you see three different numbers for the same time …

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