Add the last four quarters to get a trailing twelve month total.
Please do not make financial decisions based on these results.
What is the TTM Calculator – Trailing Twelve Months?
Add the last four quarters to get a trailing twelve month total. To use the TTM Calculator – Trailing Twelve Months, enter quarter 1, quarter 2, quarter 3, quarter 4, same four quarters a year earlier; it returns trailing twelve months, growth vs prior ttm, average per quarter, and shows them instantly as you type.
Where the TTM Calculator – Trailing Twelve Months fits
Add the last four quarters to get a trailing twelve month total. The main figure it returns is the Trailing twelve months, worked out from the values you enter.
It belongs with the other investment tools. If you are comparing options or checking a result from another angle, try the Simple Interest Calculator, Annualized Return Calculator or the Annualized Rate of Return Calculator.
How to use the TTM Calculator – Trailing Twelve Months
- Enter your numbers. The inputs are Quarter 1 ($), Quarter 2 ($), Quarter 3 ($), Quarter 4 ($), Same four quarters a year earlier ($). Use a rate of return you consider realistic; small changes compound into large differences. Fields marked optional can stay at zero.
- Read the result. The highlighted box gives the Trailing twelve months, and the cards below show Growth vs prior TTM, Average per quarter. Tables and charts break it down further.
- Test other scenarios. Results update as you type. Change one value at a time to see what drives the answer, and press Reset to go back to the defaults.
Formula and how it works
Example with real numbers
Here is the TTM Calculator – Trailing Twelve Months using the default values shown in the calculator above:
Inputs
| Quarter 1 ($) | 220,000 |
|---|---|
| Quarter 2 ($) | 240,000 |
| Quarter 3 ($) | 255,000 |
| Quarter 4 ($) | 270,000 |
| Same four quarters a year earlier ($) | 900,000 |
Results
| Trailing twelve months | $985,000.00 |
|---|---|
| Growth vs prior TTM | 9.44% |
| Average per quarter | $246,250.00 |
With these inputs the calculator returns Trailing twelve months: $985,000.00. Change any value in the calculator to see how the result moves.
What if you change one input?
Sensitivity check: raising Quarter 1 ($) from 220,000 to 264,000 (about 20% higher) and leaving everything else as in the example above changes the results like this:
| Result | Example | After the change | Change |
|---|---|---|---|
| Trailing twelve months | $985,000.00 | $1,029,000.00 | +4.5% |
| Growth vs prior TTM | 9.44% | 14.33% | +51.8% |
| Average per quarter | $246,250.00 | $257,250.00 | +4.5% |
The input that moves the result most is the one to check twice. Change it in the calculator above to test your own case.
What the results tell you
The results panel of the TTM Calculator – Trailing Twelve Months reports Trailing twelve months, growth vs prior ttm and average per quarter. Compare these figures while changing one input at a time, and use the related calculators below to look at the same situation from another angle.
Method and limits. This calculator applies the formula in the section above to your inputs, in your browser; nothing you enter is stored on our servers. Investment returns are not guaranteed. The result shows what the numbers you enter would produce, not what the market will do. It is for information, not financial, tax or legal advice.
Frequently asked questions
Why use TTM instead of a fiscal year?
It always reflects the latest twelve months, so it is more current than the last annual report.
What rate of return should I assume?
There is no guaranteed rate. Test a range of conservative and optimistic rates, and remember that fees and inflation reduce your real return.
Are investment returns guaranteed?
No. Real returns vary. Use these tools to compare scenarios, not to predict results.
Are the results guaranteed?
No. Results depend entirely on the numbers you enter and the formulas shown on this page. Please do not make financial decisions based on them alone; confirm important figures with a licensed professional.
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