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Calculators
Date Difference Calculator
Compare dates in total days, business days and calendar-aware units.
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3 available tools
Calculators
Work through everyday date, percentage and aspect-ratio questions with the formula or method shown alongside the result.
Available calculators
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Calculators
Percentage Calculator
Solve nine common percentage questions with the formula shown.
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Calculators
Aspect Ratio Calculator
Simplify a ratio, solve missing dimensions and scale common formats.
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What to expect
Methods shown
Results include calendar units, formulas or ratios so you can understand and verify the calculation.
Convenience, not advice
Calculator output is informational and should be independently checked before financial, legal or other consequential use.
A practical calculator toolkit
The calculators are designed to make assumptions visible. Date results distinguish total days from calendar units, percentage modes state their formulas, and ratio calculations preserve exact proportions where possible.
Related categories
Frequently asked questions
Do calculators store my values?
No. Values are calculated in your browser and are not saved by PipFoxy.
Can I use results as professional advice?
No. Results are for convenience and should be checked before financial, legal or other consequential use.
Guides for calculators
Browse all guidesCalculators
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Use the correct baseline for increases, decreases, reverse percentages and comparisons between two values.
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How to calculate the number of days between two dates
Count elapsed, inclusive and business days consistently while handling leap years, reversed dates and calendar boundaries.
Updated 5 min read