Contingency calculator
Add a percent buffer to an estimate you already have.
Result
Contingency calculator
Total with buffer
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Enter an estimate and a percent.
Ballpark estimate, check before you buy or quote.
Estimate for planning only. This is not tax, legal, accounting or financial advice. Results depend on the figures you enter. Check all numbers, rates and rules with the official source or a qualified professional before relying on them.
How this works and common questions
About this tool
You type the estimate and the percent. The buffer is that percent of the estimate, and the total adds them.
How it works
The buffer is the estimate times the percent. The total is the estimate plus the buffer.
Rules
The estimate is 0 or more. The percent is from 0 to 100, with up to 2 decimals. 10 and 10.00 are the same.
Questions
How is 10% of $10,000 worked out?
10% of $10,000.00 is a $1,000.00 buffer. The total is $11,000.00.
What about 33.33% of $10?
33.33% of $10.00 is $3.33, rounded half up to the cent. The total is $13.33.
Can the percent be over 100?
No. Use 100 or less. Type a larger estimate if you need a bigger number.
Do I need an account?
No. The tools work without one. You only need to sign in to save your work.
Is what I type saved?
No. Nothing is saved unless you sign in and choose Save. Otherwise it stays on the page.
Do you show ads or sell my information?
No. We show no ads and we do not sell your information.
Is this tax or legal advice?
No. Results are estimates for planning. Check rates and rules with the official source or a qualified professional.
Sign in to save this. Your entries stay on screen.
Estimate for planning only. This is not tax, legal, accounting or financial advice. Results depend on the figures you enter. Check all numbers, rates and rules with the official source or a qualified professional before relying on them.