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Free calculators — tip, percent, margin, and more
CalcNest is a free everyday and finance calculator farm. Tip splits, percentages, profit margin, salary ↔ hourly, discounts, and compound interest — all run locally in your browser. No signup, no ads.
Tip calculator
$
%
Number of people
Tip amount
$9.00
Total with tip
$59.00
Per person (total)
$29.50
Tip per person
$4.50
Calculators
- Tip CalculatorSplit the bill with tip percent and per-person totals. Free tip calculator — no signup.
- Percentage CalculatorFind X% of Y, what percent X is of Y, and percent change. Instant percentage math.
- Margin CalculatorCost and sell price → profit margin % and markup %. Clear margin vs markup.
- Salary to Hourly CalculatorConvert annual salary ↔ hourly rate with hours/week and weeks/year presets.
- Discount CalculatorOriginal price and discount % → final price and savings. Quick sale math.
- Compound Interest CalculatorPrincipal, rate, compounds per year, and time → future value. Compound growth free.
Guides
- How to Calculate a TipLearn the tip formula, common percentages, and splitting the bill — plus a free tip calculator.
- How to Calculate a PercentageX% of Y, what percent is X of Y, and percent change explained with a free calculator.
- What Is Profit Margin?Profit margin vs markup explained with formulas and a free margin calculator.
- Salary to HourlyHow to convert annual salary to hourly (and back) with hours and weeks presets.
- How to Calculate a DiscountDiscount percent to final price and savings — formula plus a free discount calculator.
- Compound Interest ExplainedWhat compound interest is, the FV formula, and a free compound interest calculator.